U.S. water systems
Illinois Water Systems
Illinois
2,874 community water systems on record — 1,788 active, 1,086 inactive.
Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.
Counties in Illinois
Adams County (28)Alexander County (6)Bond County (12)Boone County (15)Brown County (5)Bureau County (31)Calhoun County (5)Carroll County (12)Cass County (9)Champaign County (57)Christian County (17)Clark County (7)Clay County (7)Clinton County (24)Coles County (16)Cook County (263)Crawford County (11)Cumberland County (4)De Witt County (11)DeKalb County (22)Douglas County (15)DuPage County (89)Edgar County (8)Edwards County (4)Effingham County (19)Fayette County (12)Ford County (11)Franklin County (23)Fulton County (23)Gallatin County (8)Greene County (12)Grundy County (26)Hamilton County (5)Hancock County (12)Hardin County (7)Henderson County (8)Henry County (70)Iroquois County (33)Jackson County (25)Jasper County (4)Jefferson County (14)Jersey County (9)Jo Daviess County (20)Johnson County (7)Kane County (58)Kankakee County (42)Kendall County (11)Knox County (22)Lake County (142)LaSalle County (53)Lawrence County (8)Lee County (21)Livingston County (22)Logan County (19)Macon County (18)Macoupin County (40)Madison County (54)Marion County (17)Marshall County (12)Mason County (13)Massac County (4)McDonough County (19)McHenry County (47)McLean County (49)Menard County (8)Mercer County (19)Monroe County (10)Montgomery County (21)Morgan County (18)Moultrie County (7)Ogle County (32)Peoria County (44)Perry County (15)Piatt County (10)Pike County (13)Pope County (4)Pulaski County (6)Putnam County (10)Randolph County (18)Richland County (11)Rock Island County (125)Saline County (12)Sangamon County (52)Schuyler County (6)Scott County (6)Shelby County (12)St. Clair County (42)Stark County (5)Stephenson County (264)Tazewell County (57)Union County (10)Vermilion County (38)Wabash County (6)Warren County (6)Washington County (12)Wayne County (11)White County (9)Whiteside County (14)Will County (100)Williamson County (29)Winnebago County (78)Woodford County (25)
All community water systems in Illinois
- 114 TOWNCREST DR APTSNEW LENOX · 52 servedInactive
- 11TH STREET A WELLSOUTH MOLINE TWP · 0 servedInactive
- 15TH STR B WTR CORPSOUTH MOLINE TWP · 32 servedInactive
- 176TH AVE W CMNTY WTR SYSEDGINGTON TWP · 25 servedInactive
- 1ST AVENUE NORTH APTSHAMPTON TWP · 32 servedInactive
- 2800 APTSROCKFORD TWP · 25 servedInactive
- 2ND STREET WATER ASSOCIATIONANTIOCH · 24 servedInactive
- A.C. MOBILE HOME PARKMANTENO TWP · 25 servedInactive
- ABINGDONMONMOUTH · 3,275 servedActive
- ABS WATER COOPCLAYTON · 6,858 servedActive
- ACORN ACRES MHPSTEVENS POINT · 52 servedActive
- ACORN ACRES SUBDIVISIONLAKE ZURICH · 240 servedInactive
- ADAMS COUNTY WATER DISTRICT NO 1PALOMA · 833 servedActive
- ADDISONADDISON · 38,017 servedActive
- AFFORDABLE LIVING CONCEPTSWHEELING TWP · 173 servedInactive
- AIR VIEW MHPMOLINE · 200 servedActive
- AKIN WATER DISTRICTTHOMPSONVILLE · 2,368 servedActive
- ALBANYALBANY · 846 servedActive
- ALBANY MHPALBANY MHP · 25 servedInactive
- ALBERSALBERS · 1,231 servedActive
- ALBIONALBION · 2,839 servedActive
- ALDEN LONG GROVE NURSING CENTERINGLESIDE · 218 servedActive
- ALEDOALEDO · 3,470 servedActive
- ALEXANDER WATER DISTRICTALEXANDER · 442 servedActive
- ALEXISALEXIS · 836 servedActive
- ALFRED BELKWITHALFRED BELKWITH · 25 servedInactive
- ALGONQUINALGONQUIN · 30,700 servedActive
- ALHAMBRAALHAMBRA · 755 servedActive
- ALLEN EVANSALLEN EVANS · 25 servedInactive
- ALLENDALEALLENDALE · 458 servedActive
- ALLENDALE ASSOCIATIONLAKE VILLA · 400 servedActive
- ALLERTONALLERTON · 304 servedActive
- ALLMENDINGER SUBDIVISION #3ALLMENDINGER SUBDIVISION #3 · 25 servedInactive
- ALMAALMA · 336 servedActive
- ALPHAALPHA · 626 servedActive
- ALPINE VILLAGE MHPPHOENIX · 994 servedActive
- ALSEY-GLASGOW WATER COMMISSIONWINCHESTER · 475 servedActive
- ALSIPALSIP · 19,063 servedActive
- ALTAMONTALTAMONT · 2,300 servedActive
- ALTO PASSALTO PASS · 1,032 servedInactive
- ALTO PASS WATER DISTRICTALTO PASS · 1,015 servedActive
- ALTON MHCWOOD RIVER TWP · 320 servedInactive
- ALTONAALTONA · 483 servedActive
- ALVINALVIN · 270 servedActive
- AMBOYAMBOY · 2,500 servedActive
- AMERICAN WATER OPER AND MAINTENANCE, LLCSCOTT AIR FORCE BASE · 6,779 servedActive
- ANCHORANCHOR · 160 servedActive
- ANDOVERANDOVER · 565 servedActive
- ANGAMON CO RAIL GOLF CLUB25 servedInactive
- ANNAANNA · 4,910 servedActive
- ANNA-JONESBORO WATER COMMISSIONJONESBORO · 26 servedActive
- ANNAWANPERU · 843 servedActive
- ANNS MHPROCKFORD · 12 servedInactive
- ANTIOCHANTIOCH · 14,175 servedActive
- APOLLO ACRESAPOLLO ACRES · 25 servedInactive
- APPLE CANYON STATE PARKRUSH TWP · 0 servedInactive
- APPLE CREEK WATER COOPJACKSONVILLE · 968 servedActive
- APPLE RIVERAPPLE RIVER · 347 servedActive
- AQUA ILLINOIS-CANDLEWICK DVNKANKAKEE · 6,426 servedActive
- AQUA ILLINOIS-CRYSTAL CLEAR WATER CO.KANKAKEE · 855 servedActive
- AQUA ILLINOIS-EASTWOOD MANORKANKAKEE · 728 servedActive
- AQUA ILLINOIS-FAIRHAVEN ESTATESKANKAKEE · 225 servedActive
- AQUA ILLINOIS-HAWTHORN WDS COUNTRY CLUB1 servedInactive
- AQUA ILLINOIS-HAWTHORN WOODSKANKAKEE · 3,065 servedActive
- AQUA ILLINOIS-HIGHLAND ESTATESKANKAKEE · 171 servedActive
- AQUA ILLINOIS-INDIANOLAKANKAKEE · 224 servedActive
- AQUA ILLINOIS-IVANHOEKANKAKEE · 650 servedActive
- AQUA ILLINOIS-KANKAKEEKANKAKEE · 80,000 servedActive
- AQUA ILLINOIS-MCHENRY SHORESKANKAKEE · 1,862 servedActive
- AQUA ILLINOIS-MOECHERVILLEKANKAKEE · 920 servedActive
- AQUA ILLINOIS-NORDIC WOODSKANKAKEE · 500 servedActive
- AQUA ILLINOIS-NORTH MAINE UTILITIESKANKAKEE · 30,043 servedActive
- AQUA ILLINOIS-NUNDAKANKAKEE · 485 servedActive
- AQUA ILLINOIS-OAK BROOKKANKAKEE · 5,361 servedActive
- AQUA ILLINOIS-OAK RUNKANKAKEE · 1,885 servedActive
- AQUA ILLINOIS-OAKVIEWKANKAKEE · 312 servedActive
- AQUA ILLINOIS-PEOTONEKANKAKEE · 4,182 servedActive
- AQUA ILLINOIS-PHILOKANKAKEE · 1,378 servedActive
- AQUA ILLINOIS-RAVENNAKANKAKEE · 267 servedActive
- AQUA ILLINOIS-ROCKWELLKANKAKEE · 1,762 servedActive
- AQUA ILLINOIS-SHERIDAN GROVEKANKAKEE · 120 servedActive
- AQUA ILLINOIS-SKYLINEKANKAKEE · 249 servedActive
- AQUA ILLINOIS-SKYLINE (NORTHERN)KANKAKEE · 1,200 servedActive
- AQUA ILLINOIS-SUMMERDALEKANKAKEE · 145 servedActive
- AQUA ILLINOIS-SUN RIVER TERRACEKANKAKEE · 498 servedActive
- AQUA ILLINOIS-TIMBER RIDGEKANKAKEE · 2,322 servedActive
- AQUA ILLINOIS-UNIVERSITY PARKKANKAKEE · 7,002 servedActive
- AQUA ILLINOIS-VAUGHNDALE MEADOWSKANKAKEE · 330 servedInactive
- AQUA ILLINOIS-VERMILION COUNTYKANKAKEE · 30,106 servedActive
- AQUA ILLINOIS-VILLAGE WOODSKANKAKEE · 800 servedActive
- AQUA ILLINOIS-WILLOWBROOKKANKAKEE · 5,100 servedActive
- AQUA ILLINOIS-WOODLAWNKANKAKEE · 375 servedActive
- ARAPAHO VILLAGE MHPBELLEVILLE · 368 servedActive
- ARCHIE SIMMONSARCHIE SIMMONS · 25 servedInactive
- ARCOLAARCOLA · 2,927 servedActive
- ARCOLA/TUSCOLA WATER TRANSMISSIOIN MAINTUSCOLA · 50 servedActive
- ARENZVILLEARENZVILLE · 419 servedActive
- ARENZVILLE RURAL WATER COOPERATIVEALEXANDER · 675 servedActive
- ARGENTAARGENTA · 900 servedActive
- ARLINGTONARLINGTON · 250 servedActive
- ARLINGTON HEIGHTSARLINGTON HEIGHTS · 73,320 servedActive
- ARLINGTON HEIGHTS APTSNAMEOKI TWP · 200 servedInactive
- ARLINGTON PARK RACE TRACKARLINGTON HEIGHTS · 0 servedInactive
- ARLINGTON WTR DSTRCTNAMEOKI TWP · 800 servedInactive
- ARMINGTONARMINGTON · 310 servedActive
- AROMA PARKKANKAKEE · 0 servedInactive
- ARROW HEAD RANCHMOLINE · 66 servedInactive
- ARROW TRAILER PARKARROW TRAILER PARK · 25 servedInactive
- ARROWHEAD ACRES SBDVFONDULAC TWP · 40 servedInactive
- ARROWSMITHARROWSMITH · 315 servedActive
- ARTHURARTHUR · 2,300 servedActive
- ASH SUBDIVISION WATER SYSTEM AASH SUBDIVISION WATER SYSTEM A · 25 servedInactive
- ASHKUMASHKUM · 724 servedActive
- ASHLANDASHLAND · 1,333 servedActive
- ASHLEYASHLEY · 565 servedActive
- ASHMOREASHMORE · 637 servedActive
- ASHMORE ESTATESASHMORE TWP · 25 servedInactive
- ASHS WELL 2 SBDVPREEMPTION TWP · 25 servedInactive
- ASHS WELL 4 SBDVPREEMPTION TWP · 32 servedInactive
- ASHTONASHTON · 967 servedActive
- ASKVIG IMPRV ASSNFLAGG TWP · 294 servedInactive
- ASSUMPTIONASSUMPTION · 1,315 servedActive
- ASTORIAASTORIA · 1,375 servedActive
- ATHENSATHENS · 4,575 servedActive
- ATKINSONPERU · 955 servedActive
- ATLANTAATLANTA · 1,692 servedActive
- ATWOODATWOOD · 1,155 servedActive
- AUBURNAUBURN · 4,574 servedActive
- AUDN TRAILER PARKAUDN TRAILER PARK · 25 servedInactive
- AUGUSTAAUGUSTA · 553 servedActive
- AURORAAURORA · 183,000 servedActive
- AURORA COMMUNITY WATER ASSNAURORA · 150 servedActive
- AUTUMN ACCOLADE SENIOR HOMEGREEN VALLEY · 16 servedInactive
- AUTUMN RIDGE ESTATESLOWELL · 68 servedActive
- AVAAVA · 1,053 servedActive
- AVALON MHPBENTON TWP · 73 servedInactive
- AVANTARA LONG GROVELONG GROVE · 200 servedActive
- AVISTONAVISTON · 2,545 servedActive
- AVONBUSHNELL · 920 servedActive
- BAILEY RETREAT WTR SYSRURAL TWP · 25 servedInactive
- BAILEY SBDVPRINCETON TWP · 25 servedInactive
- BALCAEN 3RD ADDN WELL 4BLACKHAWK TWP · 25 servedInactive
- BALCAEN 3RD ADDN WELL 5BLACKHAWK TWP · 25 servedInactive
- BALCEANS SUBDIVISIONBALCEANS SUBDIVISION · 25 servedInactive
- BALCEANS SUBDIVISIONBALCEANS SUBDIVISION · 25 servedInactive
- BALDWINNASHVILLE · 601 servedActive
- BALMORAL HEIGHTS SUBDIVISIONCRETE · 400 servedActive
- BALMORAL WOUNSPEC PL IN CO · 25 servedInactive
- BANDOR ADDITIONBANDOR ADDITION · 25 servedInactive
- BANNOCKBURNBANNOCKBURN · 1,013 servedActive
- BARBER COLMAN CMPNYLOVES PARK · 1,600 servedInactive
- BARBERRY ACRES MHPCHEBANSE · 50 servedActive
- BARDOLPHBARDOLPH · 303 servedActive
- BARRETS MHPROCKFORD TWP · 118 servedInactive
- BARRETTS MHP SUPPLY #2BARRETTS MHP SUPPLY #2 · 25 servedInactive
- BARRINGTONBARRINGTON · 10,327 servedActive
- BARRINGTON HILLS VILLAGE HALLBARRINGTON HILLS VILLAGE HALL · 25 servedInactive
- BARRINGTON WOODS MWAPALATINE TWP · 210 servedInactive
- BARRON SBDVSPRING BAY TWP · 48 servedInactive
- BARRYBARRY · 1,318 servedActive
- BARTELSOBARTELSO · 635 servedActive
- BARTLETTBARTLETT · 41,500 servedActive
- BARTMANN HEALTH CARE CENTEREMINENCE TWP · 90 servedInactive
- BATAVIABATAVIA · 26,098 servedActive
- BATCHTOWNBATCHTOWN · 290 servedActive
- BAYLES LAKE LOT OWNERS ASSOCIATIONLODA · 645 servedActive
- BAYLISBAYLIS · 180 servedActive
- BEACH MHPDENVER · 624 servedActive
- BEACH PARKBEACH PARK · 8,710 servedActive
- BEACH PARK NO.2BEACH PARK · 3,435 servedInactive
- BEACON PAXTON LLCPAXTON · 55 servedActive
- BEARDSTOWNBEARDSTOWN · 5,951 servedActive
- BEASON CHESTNUT PWDCHESTNUT · 435 servedActive
- BEAVER CREEK VILLAGE MHPST ANNE · 13 servedInactive
- BEAVERVILLEBEAVERVILLE · 450 servedActive
- BECKEMEYERBECKEMEYER · 913 servedActive
- BECKWITH COMMUNITY ASSOCIATIONCRETE · 75 servedInactive
- BEDFORD PARKBEDFORD PARK · 602 servedActive
- BEECHERBEECHER · 4,713 servedActive
- BEECHER CITYBEECHER CITY · 500 servedActive
- BEL-AIR SBDVJOLIET TWP · 25 servedInactive
- BEL-ROCK MHPMACHESNEY PARK · 14 servedInactive
- BELGIUMBELGIUM · 480 servedInactive
- BELKNAPBELKNAP · 516 servedActive
- BELLE RIVEBELLE RIVE · 1,930 servedActive
- BELLFLOWERBELLFLOWER · 343 servedActive
- BELLMONTBELLMONT · 297 servedActive
- BELLWOODBELLWOOD · 19,156 servedActive
- BELMONT WATER INCWATSEKA · 0 servedInactive
- BELMONT-HIGHWOOD PWDDOWNERS GR TWP · 498 servedInactive
- BELVIDEREBELVIDERE · 25,339 servedActive
- BEMENTBEMENT · 1,661 servedActive
- BENLDBENLD · 1,612 servedActive
- BENSENVILLEBENSENVILLE · 18,537 servedActive
- BENSONBENSON · 401 servedActive
- BENTONBENTON · 8,104 servedActive
- BERKELEYBERKELEY · 5,214 servedActive
- BERWYNBERWYN · 57,250 servedActive
- BETHALTOBETHALTO · 15,210 servedActive
- BETHANYBETHANY · 1,475 servedActive
- BEVERLY MNR CENTRAL IMPRV ASSNWASHINGTON TWP · 25 servedInactive
- BEVERLY MNR-GRANTWASHINGTON TWP · 25 servedInactive
- BEVERLY MNR-MCGINLEYWASHINGTON TWP · 25 servedInactive
- BIG MUDDY RIVER CCINA · 1,771 servedActive
- BIGGSVILLEBIGGSVILLE · 273 servedActive
- BILL-MAR HEIGHTS MHPROCKFORD · 240 servedActive
- BIRDS PINKSTAFF WATER DISTRICTLAWRENCVILLE · 920 servedActive
- BISHOP HILLBISHOP HILL · 113 servedActive
- BISHOP MOBIL HOME PARKBISHOP MOBIL HOME PARK · 25 servedInactive
- BISHOP MOBILE COURT #2BISHOP MOBILE COURT #2 · 25 servedInactive
- BISHOP MOBILE HOME PARKBISHOP MOBILE HOME PARK · 25 servedInactive
- BISMARCK COMMUNITY WATER DISTRICTBISMARCK · 900 servedActive
- BISSELL VILLAGE MHCSOUTHFIELD · 220 servedActive
- BLACK HAWK COLLEGE MOLINE CAMPUS25 servedInactive
- BLACKHAWK COLLEGE EAST CAMPUSGALVA · 80 servedActive
- BLACKHAWK ESTATES LLCCHICAGO · 1,238 servedActive
- BLACKWELL CMNTY WELLELA TWP · 25 servedInactive
- BLAIRSVILLE PWDHURST · 807 servedActive
- BLAN MAR HILLS HOMEOWNERS ASSNLIBERTYVILLE TWP · 25 servedInactive
- BLANDINSVILLEBLANDINSVILLE · 569 servedActive
- BLM GW MHP, LLCADDISON · 390 servedActive
- BLOOMINGDALEBLOOMINGDALE · 22,018 servedActive
- BLOOMINGTONBLOOMINGTON · 77,610 servedActive
- BLOOMINGTON TOWNSHIP PWD WEST PHASEBLOOMINGTON · 1,800 servedActive
- BLOOMINGTON TOWNSHIP PWD-CRESTWICKEBLOOMINGTON · 900 servedActive
- BLUE AND GOLD HOMEOWNERS ASSNROCKFORD TWP · 25 servedInactive
- BLUE ISLANDBLUE ISLAND · 21,494 servedActive
- BLUE MOUNDMOWEAQUA · 1,300 servedActive
- BLUFF LAKE LODGES, INC.ANTIOCH · 24 servedActive
- BLUFF VIEW MHPFALL CREEK TWP · 25 servedInactive
- BLUFFSBLUFFS · 748 servedActive
- BLUFORDBLUFORD · 1,880 servedActive
- BOLEY MOBILE HOME PARKBOLEY MOBILE HOME PARK · 25 servedInactive
- BOLINGBROOKWOODRIDGE · 15,404 servedInactive
- BOLINGBROOK SYSTEM 2WOODRIDGE · 9,160 servedInactive
- BOND CO CTRY LINE HOMEOWNERSSORENTO · 36 servedInactive
- BOND/MADISON WATER COMPANYPOCAHONTAS · 6,645 servedActive
- BONE GAPBONE GAP · 207 servedActive
- BONNIEBONNIE · 437 servedActive
- BONNIE BRAE FOREST MANOR SNDSTLOCKPORT · 1,338 servedActive
- BONNIE LANE WATER SUPPLYYORKVILLE · 25 servedInactive
- BOODY COMMUNITY WATER COMPANYMACON · 232 servedActive
- BOOKWALTER WOODS MHPGARDNER · 504 servedActive
- BOULDER HILL MHPBOULDER HILL MHP · 25 servedInactive
- BOURBON SQUARE APTSPALATINE TWP · 1,224 servedInactive
- BOURBONNAISBOURBONNAIS · 6,000 servedInactive
- BOWENBOWEN · 494 servedActive
- BOYLESTON WATERWORKS CORPFAIRFIELD · 948 servedActive
- BRACEVILLEBRACEVILLE · 800 servedActive
- BRADFORDBRADFORD · 676 servedActive
- BRADLEYBRADLEY · 4,989 servedInactive
- BRADLEY HEIGHTS SUBDIVISIONROCKFORD · 82 servedActive
- BRADLEY ROAD SYSTEM - LAKE CO PWLIBERTYVILLE · 612 servedInactive
- BRAIDWOODBRAIDWOOD · 6,194 servedActive
- BREAZEALE MHPAURORA · 154 servedInactive
- BREESEBREESE · 4,772 servedActive
- BREEZEWAY SBDVFONDULAC TWP · 110 servedInactive
- BREEZY BLUFF HOMEOWNERS ASSNBREEZY BLUFF HOMEOWNERS ASSN · 25 servedInactive
- BRIAR GARDEN APTSROCKFORD TWP · 60 servedInactive
- BRIARCREST SBDV HOMEOWNERS ASSOCIATIONSCHAUMBURG · 207 servedActive
- BRIARWOOD ACRES SBDVCORTLAND TWP · 110 servedInactive
- BRIARWOOD SBDVGROVELAND TWP · 30 servedInactive
- BRIDGEPORTBRIDGEPORT · 2,572 servedActive
- BRIDGEVIEWBRIDGEVIEW · 16,467 servedActive
- BRIDGEVIEW SOUTHFIELD SBDVBRIDGEVIEW · 2,200 servedInactive
- BRIGHTONBRIGHTON · 5,041 servedActive
- BRIGHTON POND HOMEOWNERS ASSOCIATIONZION · 57 servedInactive
- BRIMFIELDBRIMFIELD · 856 servedActive
- BRINKMAN TRAILER PARKBRINKMAN TRAILER PARK · 25 servedInactive
- BROADVIEWBROADVIEW · 7,847 servedActive
- BROADVIEW ACADEMYBROADVIEW ACADEMY · 25 servedInactive
- BROADVIEW ESTATES EAST PEORIAEAST PEORIA · 89 servedActive
- BROADVIEW-WESTCHESTER JOINT WATER AGENCYBROADVIEW · 1 servedActive
- BROADWAY HOMEOWNERS ASSOCIATIONGROVELAND · 30 servedInactive
- BROADWELLBROADWELL · 169 servedActive
- BROCTONBROCTON · 288 servedActive
- BROOKDALE SENIOR LIVING - VERNON HILLSVERNON HILLS · 225 servedActive
- BROOKFIELDBROOKFIELD · 18,776 servedActive
- BROOKFIELD ZOOLOGICAL PARKBROOKFIELD · 385 servedInactive
- BROOKFIELD-NORTH RIVERSIDE WATER COMM.BROOKFIELD · 1 servedActive
- BROOKPORTBROOKPORT · 730 servedActive
- BROOKS CLARK COTTAGEBROOKS CLARK COTTAGE · 25 servedInactive
- BROOKVIEW SBDVMEDINA TWP · 400 servedInactive
- BROUGHTON WATER DISTRICTBROUGHTON · 235 servedActive
- BROWNINGBROWNING · 117 servedActive
- BROWNSTOWNBROWNSTOWN · 740 servedActive
- BROWNSVILLE WATER PROJECT, INCCARMI · 800 servedActive
- BRUSSELSBRUSSELS · 245 servedActive
- BRYANTCUBA · 267 servedActive
- BUCK LAKE ESTATES SUBDIVISIONSOMONAUK · 150 servedActive
- BUCKHORN RANCH ESTATES MHPDENVER · 702 servedActive
- BUCKINGHAMBUCKINGHAM · 300 servedActive
- BUCKLEYBUCKLEY · 600 servedActive
- BUCKNERBUCKNER · 494 servedActive
- BUDAPERU · 482 servedActive
- BUECHE MOBILE HOME PARKBUECHE MOBILE HOME PARK · 25 servedInactive
- BUECHE'S MOBILE HOME PARKELGIN TWP · 100 servedInactive
- BUFFALO GROVEBUFFALO GROVE · 43,212 servedActive
- BUFFALO HOLLOW FARMS WATER ASSOCCHILLICOTHE · 45 servedActive
- BUNCOMBE WATER DISTRICTCARBONDALE · 1,030 servedActive
- BUNKER HILLBUNKER HILL · 1,760 servedActive
- BUREAU JUNCTIONPERU · 297 servedActive
- BURLINGTONBURLINGTON · 535 servedActive
- BURNHAMBURNHAM · 3,989 servedActive
- BURNSIDE PWDNEW BURNSIDE · 2,702 servedActive
- BURNT PRAIRIEBURNT PRAIRIE · 486 servedActive
- BURR RIDGEBURR RIDGE · 11,192 servedActive
- BURT ESTATES MHCDENVER · 543 servedActive
- BUSHDESOTO · 285 servedActive
- BUSHNELLBUSHNELL · 2,972 servedActive
- BUSY BEE MHP #1LEMONT · 25 servedActive
- BUSY BEE NO 2 MHPLEMONT · 11 servedInactive
- BUTLERBUTLER · 253 servedActive
- BUYSSE SUBDIVISIONCOAL VALLEY · 380 servedActive
- BYRONBYRON · 4,743 servedActive
- BYRON HILLS PLAT 5 WELL 1BYRON TWP · 28 servedInactive
- BYRON HILLS SUBD WELL #1BYRON HILLS SUBD WELL #1 · 25 servedInactive
- BYRON HILLS SUBD WELL #2BYRON HILLS SUBD WELL #2 · 25 servedInactive
- BYRON HILLS SUBD WELL #3BYRON HILLS SUBD WELL #3 · 25 servedInactive
- BYRON HILLS SUBD WELL #4BYRON HILLS SUBD WELL #4 · 25 servedInactive
- BYRON HILLS SUBD WELL #6BYRON HILLS SUBD WELL #6 · 25 servedInactive
- BYRON HILLS SUBDIVISION WELL 3PORT BYRON · 15 servedInactive
- BYRON HLS SBDV WELL 2COE TWP · 25 servedInactive
- BYRON HLS SBDV WELL 4COE TWP · 25 servedInactive
- BYRON HLS SBDV WELL 6COE TWP · 32 servedInactive
- BYRON WOODS SUBDIVISIONPORT BYRON · 216 servedInactive
- C AND A WTR CORPNUNDA TWP · 25 servedInactive
- CABERYCABERY · 266 servedActive
- CAHOKIACAHOKIA · 4,150 servedInactive
- CAHOKIA HEIGHTSCAHOKIA HEIGHTS · 15,250 servedActive
- CALHOUNCALHOUN · 172 servedActive
- CALHOUN COUNTY RWDHARDIN · 4,675 servedActive
- CALHOUN HOUSING AUTHORITYCALHOUN HOUSING AUTHORITY · 25 servedInactive
- CALUMET CITYCALUMET CITY · 37,000 servedActive
- CALUMET GARDENS-(UTILS UNLIM)CRETE · 100 servedInactive
- CALUMET PARKCALUMET PARK · 8,442 servedActive
- CAMARGOCAMARGO · 750 servedActive
- CAMBRIACAMBRIA · 1,727 servedActive
- CAMBRIDGECAMBRIDGE · 2,086 servedActive
- CAMBRIDGE COURTS MHPNORTHBROOK · 658 servedActive
- CAMDEN-LITTLETON WATER COMMISSIONLITTLETON · 1,000 servedActive
- CAMELOT ESTATES MHPHARWOOD TWP · 25 servedInactive
- CAMP GROVECAMP GROVE · 146 servedActive
- CAMP POINTCAMP POINT · 1,190 servedActive
- CAMPBELL HILLCAMPBELL HILL · 414 servedActive
- CAMPBELLS WTR CORP 1PREEMPTION TWP · 70 servedInactive
- CAMPUSCAMPUS · 149 servedActive
- CANDLELIGHT VILLAGE MHPFARMINGTON HILLS · 420 servedActive
- CANTONCANTON · 16,748 servedActive
- CAPRONCAPRON · 1,343 servedActive
- CAPRON MHPWALWORTH · 90 servedActive
- CARBON CLIFFCARBON CLIFF · 2,134 servedActive
- CARBON HILLCARBON HILL · 370 servedActive
- CARBONDALECARBONDALE · 22,107 servedActive
- CARLINVILLECARLINVILLE · 6,598 servedActive
- CARLINVILLE HOLIDAY INNCARLINVILLE · 25 servedInactive
- CARLOCKCARLOCK · 562 servedActive
- CARLYLECARLYLE · 3,373 servedActive
- CARLYLE NORTH WATER COMPANY, INC.CARLYLE · 1,850 servedActive
- CARLYLE SOUTHWEST PWDCENTRALIA · 1,815 servedActive
- CARMICARMI · 6,307 servedActive
- CAROL STREAMCAROL STREAM · 39,854 servedActive
- CARPENTERSVILLECARPENTERSVILLE · 37,983 servedActive
- CARRIAGE WALK SBDVUNSPEC PL IN CO · 25 servedInactive
- CARRIER MILLSCARRIER MILLS · 2,085 servedActive
- CARROLL HEIGHTS UTILITIES COMPANYMT CARROLL · 80 servedActive
- CARROLLTONCARROLLTON · 2,513 servedActive
- CARTERVILLECARTERVILLE · 6,484 servedActive
- CARTERVILLE WEST PWDMARION · 231 servedInactive
- CARTHAGECARTHAGE · 2,510 servedActive
- CARYCARY · 17,826 servedActive
- CASEYCASEY · 3,274 servedActive
- CASEYVILLECASEYVILLE · 13,798 servedActive
- CASS CO APALOOSA ACRES MHP25 servedInactive
- CASS CO ROHNS MHP25 servedInactive
- CASS RURAL WATER DISTRICTALEXANDER · 403 servedActive
- CASTLE PARKCASTLE PARK · 25 servedInactive
- CATERPILLAR TRAIL PWDEAST PEORIA · 5,125 servedActive
- CATLINCATLIN · 2,380 servedActive
- CAVE-IN-ROCKCAVE-IN-ROCK · 228 servedActive
- CEDAR BROOK ESTATES SUBDIVISIONEAST MOLINE · 450 servedActive
- CEDAR HLS HOMEOWNERS ASSNWORTH TWP · 25 servedInactive
- CEDAR POINT WATER COMPANYHENNEPIN · 266 servedActive
- CEDARVILLECEDARVILLE · 663 servedActive
- CENTRAL ALEXANDER CNTY PWDOLIVE BRANCH · 1,763 servedActive
- CENTRAL LAKE COUNTY JAWALAKE BLUFF · 0 servedActive
- CENTRAL MACOUPIN COUNTY RWDCARLINVILLE · 1,883 servedActive
- CENTRAL STICKNEY SDBURBANK · 2,400 servedActive
- CENTRALIACENTRALIA · 12,182 servedActive
- CENTRALIA CORRECTIONAL SITECENTRALIA · 1,397 servedActive
- CENTURY PINES APARTMENTSMT CARROLL · 25 servedInactive
- CERRO GORDOCERRO GORDO · 1,433 servedActive
- CHADWICKCHADWICK · 523 servedActive
- CHAIN-O-LAKES MHPGRAYSLAKE · 84 servedActive
- CHAMPAIGN CO HIGH CROSS MHP25 servedInactive
- CHAMPAIGN COUNTY LAKEWOOD GARCHAMPAIGN COUNTY LAKEWOOD GAR · 60 servedInactive
- CHAMPAIGN COUNTY PLANNED COMMCHAMPAIGN COUNTY PLANNED COMM · 153 servedInactive
- CHAMPAIGN COUNTY PROCTOR MHPCHAMPAIGN COUNTY PROCTOR MHP · 42 servedInactive
- CHANDLERVILLECHANDLERVILLE · 838 servedActive
- CHANNAHONCHANNAHON · 13,380 servedActive
- CHANNAHON EASTCHANNAHON · 630 servedActive
- CHANNAHON PARKWAY STATE PARKUNSPEC PL IN CO · 0 servedInactive
- CHANNAHON WESTCHANNAHON · 25 servedInactive
- CHANNAHON-WEST(HIGHLANDS SUBDIVISION)CHANNAHON · 0 servedInactive
- CHANUTE AFBRANTOUL · 100 servedInactive
- CHAPINCHAPIN · 658 servedActive
- CHAPPEL SPRINGUNSPEC PL IN CO · 25 servedInactive
- CHARLES CURTAL JRCHARLES CURTAL JR · 25 servedInactive
- CHARLES MELVIN PRICE SPRT CNTRGRANITE CITY · 640 servedInactive
- CHARLESTONCHARLESTON · 17,286 servedActive
- CHARLOTTE HLS SBDVROAD DIST 53 · 62 servedInactive
- CHATEAU ESTATES MHPCHATEAU ESTATES MHP · 25 servedInactive
- CHATHAMCHATHAM · 16,423 servedActive
- CHATHAMS MOBILE HOME PARKCHATHAMS MOBILE HOME PARK · 25 servedInactive
- CHATSWORTHCHATSWORTH · 1,256 servedActive
- CHEBANSECHEBANSE · 1,044 servedActive
- CHENOACHENOA · 1,785 servedActive
- CHERRYPERU · 490 servedActive
- CHERRY ORCHARD APARTMENTSGENEVA · 75 servedInactive
- CHERRY VALE EAST APTSROCKFORD TWP · 180 servedInactive
- CHERRY VALLEYCHERRY VALLEY · 4,731 servedActive
- CHERRY VIEW APTSROCKFORD TWP · 60 servedInactive
- CHERRYDALE SUBDIVISIONMILAN · 63 servedActive
- CHESTERCHESTER · 8,407 servedActive
- CHESTERFIELDCHESTERFIELD · 170 servedActive
- CHESTVIEW SUBDIVISIONCHESTVIEW SUBDIVISION · 25 servedInactive
- CHEVY CHASE SWR & WTR CMPNYVERNON TWP · 300 servedInactive
- CHICAGOCHICAGO · 2,746,388 servedActive
- CHICAGO HEIGHTSCHICAGO HEIGHTS · 26,184 servedActive
- CHICAGO READ MHCNORWOOD PARK TWP · 1,700 servedInactive
- CHICAGO RIDGECHICAGO RIDGE · 14,130 servedActive
- CHIGAKWA PARK ESTATESILLINOIS CITY · 53 servedActive
- CHILLICOTHECHILLICOTHE · 5,996 servedActive
- CHILLION CHALET MOBILE HOMES PCHILLION CHALET MOBILE HOMES P · 25 servedInactive
- CHINQUAPIN RIDGE ESTATES HOMEOWNERSROCKVALE TWP · 24 servedInactive
- CHOATE MHCANNA · 300 servedActive
- CHRISMANCHRISMAN · 1,273 servedActive
- CHRISTOPHERCHRISTOPHER · 3,072 servedActive
- CHULEWINSKI FCHULEWINSKI F · 25 servedInactive
- CHURCH OF CHRISTCHURCH OF CHRIST · 25 servedInactive
- CICEROCICERO · 83,000 servedActive
- CIPS-COFFEENEAST FORK TWP · 25 servedInactive
- CISCOCLINTON · 242 servedActive
- CISNECISNE · 634 servedActive
- CISSNA PARKCISSNA PARK · 846 servedActive
- CLAREMONTCLAREMONT · 190 servedActive
- CLARENDON HILLSCLARENDON HILLS · 8,702 servedActive
- CLARK-EDGAR RWDMARSHALL · 9,657 servedActive
- CLARKS MHPROCKFORD · 90 servedActive
- CLAY CITYCLAY CITY · 957 servedActive
- CLAY COUNTY WATER INCFLORA · 2,015 servedActive
- CLAYTONCLAYTON · 709 servedActive
- CLAYTON WORK CAMPMT. STERLING · 83 servedActive
- CLAYTON-CAMP POINT WATER COMMISSIONCAMP POINT · 2,470 servedActive
- CLEAR WATER SERVICE CORPMATTOON · 8,900 servedActive
- CLEARVIEW SUBDIVISIONJOLIET · 305 servedInactive
- CLIFTONCLIFTON · 1,500 servedActive
- CLINTONCLINTON · 7,200 servedActive
- CLINTON COUNTY EAST PWDCENTRALIA · 1,980 servedActive
- CLINTON COUNTY KLOECKNER MHCLINTON COUNTY KLOECKNER MH · 30 servedInactive
- CLINTON COUNTY RENSING MHPCLINTON COUNTY RENSING MHP · 20 servedInactive
- CLOVER LEAF VILLAGE MHPMOLINE · 732 servedActive
- CMNTY 1 LYNWOOD ADDNHANNA TWP · 28 servedInactive
- COAL CITYCOAL CITY · 5,749 servedActive
- COAL VALLEYCOAL VALLEY · 3,873 servedActive
- COAL VALLEY PWDMARION · 3,960 servedActive
- COBDENCOBDEN · 1,267 servedActive
- COFFEENAVISTON · 647 servedActive
- COLCHESTERCOLCHESTER · 1,395 servedActive
- COLEMAN TRI-CO SERVICESCOLEMAN TRI-CO SERVICES · 25 servedInactive
- COLFAXCOLFAX · 989 servedActive
- COLLEGE VIEW SUBDIVISIONLOCKPORT · 570 servedActive
- COLLINSVILLECOLLINSVILLE · 29,500 servedActive
- COLONA EASTMOLINE · 2,501 servedActive
- COLONA PARK LLC - FORMERLY KERSHAW MHPROCKFORD · 250 servedActive
- COLONA WESTMOLINE · 2,640 servedActive
- COLONIAL MEADOWS WATER COMPANYBLOOMINGTON · 193 servedActive
- COLONIAL PARK APTSWARREN TWP · 800 servedInactive
- COLPCOLP · 506 servedActive
- COLUMBIACOLUMBIA · 11,129 servedActive
- COMMONFIELDS OF CAHOKIA PWDCAHOKIA · 11,030 servedInactive
- COMMUNITYCOMMUNITY · 25 servedInactive
- COMMUNITY WELLCOMMUNITY WELL · 25 servedInactive
- COMPTONCOMPTON · 279 servedActive
- CONCORDCONCORD · 295 servedActive
- CONCORD TERRACE WTR CMPNY INCSCHAUMBURG TWP · 150 servedInactive
- CONCORDIA WATER COOPERATIVEJERSEYVILLE · 510 servedInactive
- CONGERVILLECONGERVILLE · 497 servedActive
- CONSOLIDATED PWDTAMAROA · 913 servedInactive
- COOK CO COUNTRYSIDE PLAZA50 servedInactive
- COOK CO FERNDALE HGTS SUBDPALATINE · 11,724 servedInactive
- COOK CO NO SHORE TOWERS CONDO180 servedInactive
- COOK COUNTY EDGEWOOD ACCOOK COUNTY · 175 servedInactive
- COOK COUNTY MOBILE HOMESCOOK COUNTY MOBILE HOMES · 25 servedInactive
- COOKS MHPOTTAWA TWP · 25 servedInactive
- COOKS MILLS WATER ASSOCIATIONMATTOON · 720 servedActive
- COOKSVILLELEXINGTON · 157 servedActive
- COPELL APARTMENTSCOPELL APARTMENTS · 25 servedInactive
- CORDIAL COURTS MHPCORDIAL COURTS MHP · 25 servedInactive
- CORDOVACORDOVA · 640 servedActive
- CORINTH PWDPITTSBURG · 3,927 servedActive
- CORNELLCORNELL · 500 servedActive
- CORNLAND COMM CENTER APTSCORNLAND COMM CENTER APTS · 25 servedInactive
- CORTLANDCORTLAND · 4,398 servedActive
- CORTLAND CORNERS MHPAURORA · 250 servedActive
- COTTONWOOD COVE MHPSPELD · 358 servedActive
- COULTERVILLECOULTERVILLE · 1,052 servedActive
- COUNTRY ACRES MHP (LA SALLE COUNTY)DENVER · 222 servedActive
- COUNTRY ACRES MHP (WHITESIDE COUNTY)ROCK FALLS · 232 servedActive
- COUNTRY ACRES MHP SUPPLY #2COUNTRY ACRES MHP SUPPLY #2 · 25 servedInactive
- COUNTRY ACRES SUBDCOUNTRY ACRES SUBD · 25 servedInactive
- COUNTRY AIRE MHP (JODAVIESS COUNTY)100 servedInactive
- COUNTRY CLUB ESTATES SUBDIVISIONKEWANEE · 63 servedActive
- COUNTRY CLUB HILLSCOUNTRY CLUB HILLS · 16,500 servedActive
- COUNTRY CLUB LINE SBDVCARLINVILLE TWP · 128 servedInactive
- COUNTRY CLUB MANOR WELL #1COUNTRY CLUB MANOR WELL #1 · 25 servedInactive
- COUNTRY CLUB MANOR WELL 1RURAL TWP · 25 servedInactive
- COUNTRY CLUB MANOR WELL 2UNSPEC PL IN CO · 32 servedInactive
- COUNTRY ESTATESCOUNTRY ESTATES · 25 servedInactive
- COUNTRY ESTATESCOUNTRY ESTATES · 25 servedInactive
- COUNTRY ESTATES SUBDIVISIONGENESEO · 188 servedActive
- COUNTRY HILLS WTR, INC.HIGHLAND · 166 servedActive
- COUNTRY LANE MHPDOWNS · 50 servedActive
- COUNTRY LIVING ESTATES, LLCPORT BYRON · 50 servedInactive
- COUNTRY LNCOUNTRY LN · 25 servedInactive
- COUNTRY MANOR MOBILE HOME PKCOUNTRY MANOR MOBILE HOME PK · 25 servedInactive
- COUNTRY OAKSCOUNTRY OAKS · 25 servedInactive
- COUNTRY SIDE ESTATES MHPDANVERS · 90 servedInactive
- COUNTRY VIEW ESTATESCOUNTRY VIEW ESTATES · 25 servedInactive
- COUNTRY VIEW ESTATES SUBDIVISIONLINDENWOOD · 125 servedActive
- COUNTRY VIEW ESTS MHPURBANA · 97 servedActive
- COUNTRY VIEW MHCPIERRON · 173 servedActive
- COUNTRYSIDECOUNTRYSIDE · 6,420 servedActive
- COUNTRYSIDE ESTATES MHPWHEATON · 158 servedActive
- COUNTRYSIDE LAKE SUBDIVISION -LAKE CO PWLIBERTYVILLE · 1,287 servedActive
- COUNTRYSIDE MANOR SBDV- LAKE CO PWLIBERTYVILLE · 1,518 servedInactive
- COUNTRYSIDE MOBILE HOME ESTATES MHPBLOOMFIELD HILLS · 200 servedActive
- COUNTRYSIDE WELL 2DOWNERS GR TWP · 30 servedInactive
- COWDENCOWDEN · 612 servedActive
- COX'S SUBDIVISIONCOX'S SUBDIVISION · 25 servedInactive
- COYNE CENTER COOPMILAN · 150 servedActive
- CRAB ORCHARD ESTATESCARBONDALE · 238 servedActive
- CRAB ORCHARD PWDCARBONDALE · 1,773 servedInactive
- CRAB ORCHARD REFUGEMARION · 25 servedActive
- CRAINVILLECRAINVILLE · 1,711 servedActive
- CREAL SPRINGSCREAL SPRINGS · 683 servedActive
- CRESCENT CITYCRESCENT CITY · 650 servedActive
- CRESCENT MHPROCHESTER · 363 servedInactive
- CRESCENT MOBILE ESTS MHPHENRY TWP · 50 servedInactive
- CREST HILLCREST HILL · 21,169 servedActive
- CREST VIEW DR #1CREST VIEW DR #1 · 25 servedInactive
- CREST VIEW DR 2CREST VIEW DR 2 · 25 servedInactive
- CRESTONCRESTON · 627 servedActive
- CRESTWICK EASTCRESTWICK EAST · 25 servedInactive
- CRESTWICK SOUTHCRESTWICK SOUTH · 25 servedInactive
- CRESTWICKE HGTSCRESTWICKE HGTS · 25 servedInactive
- CRESTWOODCRESTWOOD · 10,826 servedActive
- CRETECRETE · 8,275 servedActive
- CREVE COEURCREVE COEUR · 4,934 servedActive
- CRISWELL COURT MHPJOLIET · 94 servedActive
- CROPPERS 1ST 4TH AND 5TH ADDITIONMILAN · 495 servedActive
- CROPPERS 2ND & 3RD ADDNBLACKHAWK TWP · 25 servedInactive
- CROPSEY MUTUAL WATER ASSOCIATIONLINCOLN · 65 servedActive
- CROSSROADS MHPMATHER · 53 servedActive
- CROSSVILLECROSSVILLE · 1,091 servedActive
- CRYSTAL HEIGHTS ASSOCIATIONCRYSTAL LAKE · 0 servedInactive
- CRYSTAL LAKECRYSTAL LAKE · 40,661 servedActive
- CRYSTAL LAWNS ADDITION IMPROVEMENT ASSOCJOLIET · 1,435 servedActive
- CTZNS PLEASANT HILL DVNMILTON TWP · 177 servedInactive
- CUBACUBA · 1,184 servedActive
- CULES CO NEES SUBDASHAMORE · 34 servedInactive
- CULLOMCULLOM · 563 servedActive
- CUMBERLAND CO AGRO LABCUMBERLAND CO AGRO LAB · 25 servedInactive
- CURRAN-GARDNER TOWNSHIP PWDSPRINGFIELD · 6,651 servedActive
- CUTLERCUTLER · 463 servedActive
- D AND R APTSCHAMPAIGN · 25 servedInactive
- DAHLGRENDAHLGREN · 859 servedActive
- DAKOTADAKOTA · 500 servedActive
- DALE PWDDALE · 325 servedInactive
- DALLAS CITYDALLAS CITY · 788 servedActive
- DALLAS RURAL WATER DISTRICTHAMILTON · 6,370 servedActive
- DALTON CITYDALTON CITY · 454 servedActive
- DALZELLPERU · 663 servedActive
- DAMIANSVILLEDAMIANSVILLE · 602 servedActive
- DANA/LONG POINT, READING, ANCONA RWDBELLEVILLE · 126 servedInactive
- DANFORTHDANFORTH · 550 servedActive
- DANVERSDANVERS · 1,183 servedActive
- DANVILLE CRCTNL CNTRDANVILLE · 1,930 servedInactive
- DARIENDARIEN · 21,751 servedActive
- DAVISDAVIS · 589 servedActive
- DAVIS JUNCTIONDAVIS JUNCTION · 2,344 servedActive
- DAWSONDAWSON · 2,375 servedActive
- DAYSPRING BIBLE COLLEGELAKE ZURICH · 30 servedActive
- DAYTON VALLEY VIEWDAYTON VALLEY VIEW · 25 servedInactive
- DAYTONS VALLEY VIEW WELL 1COLONA TWP · 25 servedInactive
- DE LANDWESTVILLE · 446 servedActive
- DE PUEDEPUE · 1,838 servedActive
- DE SOTODESOTO · 1,910 servedActive
- DE WITTCLINTON · 175 servedActive
- DE WITT COUNTY NURSING HOMEDE WITT COUNTY NURSING HOME · 25 servedInactive
- DE WITT COUNTY NURSING HOMECLINTON · 83 servedInactive
- DEAN'S FIRST ADDN SUBDIVISIONDEAN'S FIRST ADDN SUBDIVISION · 25 servedInactive
- DEARBORN MHPHINSDALE · 24 servedInactive
- DECATURDECATUR · 76,122 servedActive
- DECATUR MHP, LLCCEDAREDGE · 500 servedActive
- DECATUR TRAILOR RANCH MHPDECATUR · 25 servedInactive
- DEER CREEKDEER CREEK · 647 servedActive
- DEER RIDGEDEER RIDGE · 25 servedInactive
- DEERFIELDDEERFIELD · 19,196 servedActive
- DEERING OAKS SUBDIVISIONLIBERTYVILLE · 3 servedInactive
- DEERWOOD ESTATESINDIANOLA · 176 servedActive
- DEKALBDEKALB · 45,000 servedActive
- DEL MONTE CORP-PLANT 109ROCHELLE · 25 servedInactive
- DEL MONTE CORP-PLANT 199OGLE · 25 servedInactive
- DELABAR STATE PARKOQUAWKA TWP · 25 servedInactive
- DELAVANDELAVAN · 1,743 servedActive
- DELUXE LAKE ESTATES MHPFARMINGTON · 325 servedActive
- DELUXE MHPPEORIA TWP · 97 servedInactive
- DELUXE MOBILE HOME PARK BDELUXE MOBILE HOME PARK B · 25 servedInactive
- DELUXE MOBILE HOME PARK CDELUXE MOBILE HOME PARK C · 25 servedInactive
- DERBY GLEN HMOWNR ASSNMILTON TWP · 25 servedInactive
- DERRICKS ADDITION #1DERRICKS ADDITION #1 · 25 servedInactive
- DES PLAINESDES PLAINES · 60,675 servedActive
- DES PLAINES MHPDESPLAINES · 405 servedActive
- DEVILS KITCHEN WATER DISTRICTCARBONDALE · 1,428 servedActive
- DHS RUSHVILLE TREATMENT AND DETENTIONRUSHVILLE · 565 servedActive
- DIAMONDDIAMOND · 2,508 servedActive
- DIAMOND LAKE MHPMUNDELIN · 198 servedActive
- DIETERICHDIETERICH · 900 servedActive
- DIVERNONDIVERNON · 1,172 servedActive
- DIVINE WORD SEMINARYNORTHFIELD TWP · 105 servedInactive
- DIX-KELL WATER COMMSSIONDIX · 1,972 servedActive
- DIXIE DELLSUNIVERSITY PARK · 558 servedInactive
- DIXIE ESTATES SUBDIVISIONBEECHER · 180 servedActive
- DIXMOORDIXMOOR · 2,973 servedActive
- DIXONDIXON · 15,096 servedActive
- DIXON CORRECTIONAL CENTERDIXON · 1,038 servedActive
- DIXON MHPDIXON MHP · 25 servedInactive
- DIXON SPRINGS AGR CENTERROAD DIST 2 · 45 servedInactive
- DIXON SPRINGS IMPACT INCAR PGMROAD DIST 2 · 170 servedInactive
- DOLTONDOLTON · 20,510 servedActive
- DON FORTNER SUBDIVISIONDON FORTNER SUBDIVISION · 25 servedInactive
- DON RON TRAILER MHPUNSPEC PL IN CO · 25 servedInactive
- DONGOLADONGOLA · 752 servedActive
- DONMAR MOBILE HOME ACESSORIESDONMAR MOBILE HOME ACESSORIES · 25 servedInactive
- DONNELLSONDONNELLSON · 213 servedActive
- DONNY BROOK ESTATES SUBDIVISIONDEKALB · 30 servedActive
- DONOVANDONOVAN · 279 servedActive
- DORCHESTERDORCHESTER · 562 servedActive
- DOUBLE H MOBILE HOME PARKDOUBLE H MOBILE HOME PARK · 25 servedInactive
- DOUGLAS CO LAKEWOOD ESTS SUBD84 servedInactive
- DOUGLAS COUNTY HOKE MHPDOUGLAS COUNTY HOKE MHP · 27 servedInactive
- DOUGLAS WOODS SBDVUNSPEC PL IN CO · 25 servedInactive
- DOVERPRINCETON · 200 servedActive
- DOWELLDOWELL · 1,188 servedActive
- DOWNERS GROVEDOWNERS GROVE · 49,425 servedActive
- DOWNSDOWNS · 1,201 servedActive
- DOYLES 1ST ADDNBUFFALO PR TWP · 25 servedInactive
- DU PAGE COUNTY BLACKHAWK HDU PAGE COUNTY BLACKHAWK H · 1,020 servedInactive
- DU PAGE COUNTY GARY AVENUEDU PAGE COUNTY GARY AVENUE · 84 servedInactive
- DU PAGE COUNTY TIMBER TRAIDU PAGE COUNTY · 500 servedInactive
- DU PAGE WATER COMMISSIONELMHURST · 1 servedActive
- DUBOISNASHVILLE · 200 servedActive
- DUCK LAKE WELL OWNERS ASSOCIATIONINGLESIDE · 141 servedActive
- DUGAN RD COMMUNITY WELLDUGAN RD COMMUNITY WELL · 25 servedInactive
- DUNFERMLINE-ST DAVID WATER COMMISSIONST DAVID · 850 servedActive
- DUNHILL SUBDUNSPEC PL IN CO · 25 servedInactive
- DUNLAPDUNLAP · 1,603 servedActive
- DUNLAP WTR CMPNYWABASH TWP · 104 servedInactive
- DUPAGE CNTY CARE UNITUNSPEC PL IN CO · 25 servedInactive
- DUPODUPO · 4,684 servedActive
- DUQUOINDUQUOIN · 7,169 servedActive
- DURANDDURAND · 1,427 servedActive
- DURK'SDURK'S · 2 servedInactive
- DWIGHTDWIGHT · 4,400 servedActive
- DWIGHT CORRECTIONAL CENTERPONTIAC · 24 servedInactive
- EAGARVILLEEAGARVILLE · 127 servedActive
- EARL E FULLEREARL E FULLER · 25 servedInactive
- EARLS MOBILE HOME PARKEARLS MOBILE HOME PARK · 25 servedInactive
- EARLVILLEEARLVILLE · 1,613 servedActive
- EARLVILLE MHPEARL TWP · 78 servedInactive
- EAST 30 MHPCROFTON · 218 servedActive
- EAST ALTONEAST ALTON · 5,786 servedActive
- EAST BROOKLYNUNSPEC PL IN CO · 140 servedInactive
- EAST DUBUQUEEAST DUBUQUE · 1,565 servedActive
- EAST DUNDEEEAST DUNDEE · 3,115 servedActive
- EAST END TRC VALLEY DR25 servedInactive
- EAST END WATER ASSOCIATIONTAYLOR RIDGE · 40 servedActive
- EAST GALESBURGEAST GALESBURG · 860 servedActive
- EAST HAZEL CRESTEAST HAZEL CREST · 1,500 servedActive
- EAST LAWN WATER ASSOCIATIONEAST MOLINE · 160 servedActive
- EAST LYNN COMMUNITY WATER SYSTEMEAST LYNN · 112 servedActive
- EAST MOLINEEAST MOLINE · 21,374 servedActive
- EAST MOLINE CORRECTIONAL CENTEREAST MOLINE · 500 servedActive
- EAST MORELAND WATER CORPORATIONJOLIET · 135 servedInactive
- EAST MORELAND WTR SERVICE ASSNJOLIET · 1,320 servedActive
- EAST PEORIAEAST PEORIA · 22,284 servedActive
- EAST PEORIA-VALLEY VIEW KNOLLS 4 AND 6EAST PEORIA · 230 servedInactive
- EAST PORTAL WTR SYSCOLONA TWP · 795 servedInactive
- EAST RIDGE APTSROCKFORD · 30 servedInactive
- EAST SIDE MHPRANTOUL · 79 servedActive
- EAST SIDE WTR ASSNSALEM TWP · 155 servedInactive
- EASTERN ILLINOIS UNIVERSITYCHARLESTON · 5,500 servedActive
- EASTONEASTON · 334 servedActive
- EASTSIDE WATER ASSOCIATIONROAD DIST 4 · 25 servedInactive
- EASY BREEZE MANUFACTURED HOME PARKSANFORD · 108 servedActive
- EATON PWDANNAPOLIS · 1,655 servedActive
- EBERTS 2ND ADDNBLACKHAWK TWP · 25 servedInactive
- EBERTS 3RD ADDITIONMILAN · 99 servedActive
- ECHO LAKE BLOCK IV WTR ASSNELA TWP · 25 servedInactive
- ECHO LAKE WATER SYSTEM BLOCK 7LAKE ZURICH · 40 servedInactive
- ECKSTROMS 1ST ADDNBOWLING TWP · 28 servedInactive
- EDELSTEIN WATER COOPEAST PEORIA · 113 servedActive
- EDEN PWDSPARTA · 328 servedInactive
- EDENFRUITPOPLAR GROVE TWP · 24 servedInactive
- EDGEBROOK MHPEDGEBROOK MHP · 25 servedInactive
- EDGEWOODEDGEWOOD · 440 servedActive
- EDGEWOOD MOBILE HOME COURT (MHC)OVIEDO · 92 servedActive
- EDGINGTON WATER DISTRICTTAYLOR RIDGE · 391 servedActive
- EDINBURGEDINBURG · 1,068 servedActive
- EDWARD HINES JR V A HOSPITALHINES · 60 servedActive
- EDWARDSVILLEEDWARDSVILLE · 26,808 servedActive
- EFFINGHAMEFFINGHAM · 12,252 servedActive
- EFFINGHAM CO FUNNEMAN SUBDTEUTOPOLIS · 42 servedInactive
- EGYPTIAN TRAIL WATER CORPARTHUR · 64 servedActive
- EGYPTIAN WATER COMPANYNASHVILLE · 2,330 servedActive
- EHLERS MHPURBANA · 112 servedActive
- EILEENEILEEN · 569 servedInactive
- EJ WATER COOPERATIVEDIETERICH · 29,720 servedActive
- EJ WATER-COALTONDIETERICH · 317 servedActive
- EJ WATER-DEWEYDIETERICH · 350 servedActive
- EJ WATER-MCWCDIETERICH · 2,075 servedActive
- EJ WATER-MONTROSEDIETERICH · 201 servedActive
- EJ WATER-NIANTICDIETERICH · 648 servedActive
- EJ WATER-SANGCHRISDIETERICH · 1,025 servedActive
- EJ WATER-WATSONDIETERICH · 754 servedActive
- EJ WATER-WITTDIETERICH · 785 servedActive
- EKSTROMS SUBDIVISIONEKSTROMS SUBDIVISION · 25 servedInactive
- EL PASOEL PASO · 2,812 servedActive
- EL RANCHO VISTAESTS MHPRIVERSIDE TWP · 224 servedInactive
- ELBURNELBURN · 6,559 servedActive
- ELDORADOELDORADO · 4,715 servedActive
- ELDREDELDRED · 211 servedActive
- ELGINELGIN · 114,797 servedActive
- ELGIN MHCELGIN TWP · 2,074 servedInactive
- ELIZABETHELIZABETH · 802 servedActive
- ELIZABETHTOWNELIZABETHTOWN · 220 servedActive
- ELJR DEVELOPMENT CORPELJR DEVELOPMENT CORP · 25 servedInactive
- ELK GROVE VILLAGEELK GROVE VILLAGE · 34,700 servedActive
- ELKHARTELKHART · 565 servedActive
- ELKVILLEELKVILLE · 1,068 servedActive
- ELLERY WATER CORPALBION · 2,380 servedActive
- ELLIOTTELLIOTT · 269 servedActive
- ELLIS GROVEELLIS GROVE · 403 servedActive
- ELLSWORTHELLSWORTH · 200 servedActive
- ELM OAK MUTUAL WATER SYSTEMLAKE FOREST · 50 servedActive
- ELMHURSTELMHURST · 45,000 servedActive
- ELMWOODELMWOOD · 2,058 servedActive
- ELMWOOD PARKELMWOOD PARK · 25,000 servedActive
- ELVASTONELVASTON · 165 servedActive
- ELVERADO WATER DISTRICTVERGENNES · 763 servedActive
- ELWOODELWOOD · 2,229 servedActive
- EMBARRAS AREA WATER DISTRICTCHARLESTON · 3,750 servedActive
- EMDENEMDEN · 467 servedActive
- EMINGTONEMINGTON · 120 servedActive
- ENCHANTED VILLAGEFARMINGTON HILLS · 720 servedActive
- ENERGYENERGY · 984 servedActive
- ENFIELDENFIELD · 1,064 servedActive
- ENGLISH RIDGE DVLPMNTELA TWP · 500 servedInactive
- EQUALITYEQUALITY · 652 servedActive
- ERICKSON RACHAELERICKSON RACHAEL · 25 servedInactive
- ERIEERIE · 1,600 servedActive
- ESQUIRE ESTATES MHPPEORIA · 9 servedInactive
- EUREKAEUREKA · 5,216 servedActive
- EVANSTONEVANSTON · 74,486 servedActive
- EVANSVILLEEVANSVILLE · 660 servedActive
- EVERGREEN MHPDEKALB · 0 servedInactive
- EVERGREEN PARKEVERGREEN PARK · 19,943 servedActive
- EVERGREEN VILLAGE SUBDIVISIONEAST MOLINE · 56 servedActive
- EVERGREEN WILDWOOD MOBILE HOME PARKPITTSBURGH · 230 servedActive
- EWING-INA WATER COMMISSIONWHITTINGTON · 2,393 servedActive
- EXETER-MERRITT WATER COOPWINCHESTER · 820 servedActive
- EXPRESSWAY MHPQUINCY · 98 servedActive
- F GLENN MINERF GLENN MINER · 25 servedInactive
- FAHNSTOCK COURT SUBDIVISIONPEORIA · 24 servedInactive
- FAIR ACRES SUBDIVISIONJOLIET · 156 servedInactive
- FAIRACRES ASSOCIATIONSILVIS · 200 servedInactive
- FAIRBURYFAIRBURY · 3,633 servedActive
- FAIRFIELDFAIRFIELD · 6,202 servedActive
- FAIRFIELD ROAD ADDNCOE TWP · 25 servedInactive
- FAIRMOUNTFAIRMOUNT · 690 servedActive
- FAIRVIEWCUBA · 588 servedActive
- FAIRVIEW HOUSE APTSFAIRVIEW HOUSE APTS · 25 servedInactive
- FAIRVIEW LOUNGE & MOTELFAIRVIEW LOUNGE & MOTEL · 25 servedInactive
- FAIRWAY ESTS APTSNAMEOKI TWP · 120 servedInactive
- FAIRWAY GROVE APTSLISLE TWP · 300 servedInactive
- FALCON FARMSPORT BYRON · 350 servedActive
- FAMILY MANUFACTURED HOME COMMUNITY, LLCWINFIELD · 240 servedInactive
- FAR HILLS SBDVWAYNE TWP · 175 servedInactive
- FARINAFARINA · 540 servedActive
- FARMER CITYFARMER CITY · 2,055 servedActive
- FARMERSVILLEFARMERSVILLE · 784 servedActive
- FAWN HILLS SUBDIVISIONCHILLICOTHE · 183 servedActive
- FAYETTE WATER COMPANYBROWNSTOWN · 5,608 servedActive
- FAYETTEVILLESWANSEA · 441 servedActive
- FCI-MARIONMARION · 1,544 servedActive
- FDL CRCTL INST & PRSN CMPGREENVILLE · 1,300 servedInactive
- FELLOWSHIP BAPTIST COLLEGEUNSPEC PL IN CO · 25 servedInactive
- FERGES WATER DISTRICTMARION · 1,185 servedActive
- FERMI NTL ACCL LAB- D-0 AREAWINFIELD TWP · 100 servedInactive
- FERMI NTL ACCL LAB- MAIN SITEWINFIELD TWP · 2,000 servedInactive
- FERMI NTL ACCL LAB- VLGWINFIELD TWP · 430 servedInactive
- FERROUS WATER ASSOCIATIONCOAL VALLEY · 23 servedInactive
- FIELDONFIELDON · 186 servedActive
- FIELDS HILL IMPROVEMENT ASSOCIATIONOTTAWA · 312 servedActive
- FIELDS OF LONG GROVELONG GROVE · 267 servedActive
- FILLMOREFILLMORE · 313 servedActive
- FINDLAYFINDLAY · 750 servedActive
- FITHIANFITHIAN · 485 servedActive
- FLANAGANFLANAGAN · 1,110 servedActive
- FLAT ROCKFLAT ROCK · 325 servedActive
- FLORAFLORA · 5,233 servedActive
- FLOSSMOORFLOSSMOOR · 9,371 servedActive
- FLYING W ESTATESFLYING W ESTATES · 25 servedInactive
- FLYING W ESTS WTR ASSNEMPIRE TWP · 26 servedInactive
- FMC WATER COMPANYODIN · 2,945 servedActive
- FORD HEIGHTSFORD HEIGHTS · 1,813 servedActive
- FOREST CITYGREEN VALLEY · 222 servedActive
- FOREST HLS SBDVCARLINVILLE TWP · 114 servedInactive
- FOREST HOMES-MAPLE PARK PWDCOTTAGE HILLS · 2,000 servedInactive
- FOREST LAKE ADDITION - LAKE CO PWLIBERTYVILLE · 225 servedActive
- FOREST PARKFOREST PARK · 14,340 servedActive
- FOREST VIEWFOREST VIEW · 800 servedActive
- FOREST VIEW MHPLOVES PARK · 650 servedActive
- FOREST VIEW WATER SYSTEMFOREST VIEW WATER SYSTEM · 25 servedInactive
- FOREST VIEW WATER SYSTEMFOREST VIEW WATER SYSTEM · 25 servedInactive
- FORGE AT THE LAKEMETAMORE · 387 servedActive
- FORMOSA PLASTICSILLIOPOLIS · 1 servedInactive
- FORRESTFORREST · 1,225 servedActive
- FORREST PARK MHPSPELD · 352 servedActive
- FORRESTONFORRESTON · 1,338 servedActive
- FORSYTHFORSYTH · 3,490 servedActive
- FORT MASSAC PWDMETROPOLIS · 6,290 servedActive
- FOSSIL ROCK RECREATION AREACHICAGO · 0 servedInactive
- FOSTERBURG PWDALTON · 7,940 servedActive
- FOUNTAIN VALLEY MHPRANTOUL · 375 servedActive
- FOUNTAIN WATER DISTRICTVALMEYER · 3,650 servedActive
- FOUR LAKES SUBDIVISIONMARSEILLES · 12 servedInactive
- FOUR LAKES VLG CONDO ASSN 1LISLE TWP · 1,200 servedInactive
- FOUR LAKES VLG SBDVLISLE TWP · 2,600 servedInactive
- FOUR SEASONS 2000 ADDNBELVIDERE · 578 servedInactive
- FOUR SEASONS MHPPROVO · 1,468 servedActive
- FOUR SEASONS MHPPEORIA · 270 servedInactive
- FOUR SEASONS MHPLIMESTONE TWP · 150 servedInactive
- FOUR STAR CAMPGROUNDMARSEILLES · 250 servedActive
- FOX CREEK FARMS WATER COMPANYBRIMFIELD · 203 servedActive
- FOX LAKEINGLESIDE · 11,780 servedActive
- FOX LAKE HILLS SUBDIVISION - LAKE CO PWLIBERTYVILLE · 2,628 servedActive
- FOX LAKE PLANT 2CARY · 3,600 servedInactive
- FOX LAWN HOMEOWNERS WATER ASSOCIATIONYORKVILLE · 167 servedActive
- FOX POINT MOBILE HOME PARKFOX POINT MOBILE HOME PARK · 25 servedInactive
- FOX RIVER GROVEFOX RIVER GROVE · 4,702 servedActive
- FRANCISCAN SISTERS OF CHICAGOLEMONT · 505 servedActive
- FRANK DUNBARFRANK DUNBAR · 25 servedInactive
- FRANKFORTFRANKFORT · 24,000 servedActive
- FRANKFORT E HICKORY CRK BASINFRANKFORT TWP · 10,900 servedInactive
- FRANKFORT SQUARE SBDVFRANKFORT TWP · 6,200 servedInactive
- FRANKLINFRANKLIN · 800 servedActive
- FRANKLIN GROVEFRANKLIN GROVE · 896 servedActive
- FRANKLIN GROVE HLTH CARE CNTRCHINA TWP · 170 servedInactive
- FRANKLIN PARKFRANKLIN PARK · 18,467 servedActive
- FRAZIER ACRES MHPSCOTT TWP · 35 servedInactive
- FREEBURGFREEBURG · 4,707 servedActive
- FREEMAN SPURFREEMAN SPUR · 373 servedActive
- FREEMAN UNITED CROWN MINE 2FREEMAN UNITED CROWN MINE 2 · 25 servedInactive
- FREEPORTFREEPORT · 23,930 servedActive
- FRENTRESS LAKEEAST DUBUQUE · 233 servedActive
- FRIENDLY CORNERS WTR ASSNBOWLING TWP · 32 servedInactive
- FRIENDSHIP FARM RD WELL #1FRIENDSHIP FARM RD WELL #1 · 25 servedInactive
- FRIENDSHIP FARM RD WELL #2FRIENDSHIP FARM RD WELL #2 · 25 servedInactive
- FSH WATER COMMISSIONFREEBURG · 313 servedActive
- FULTONFULTON · 3,346 servedActive
- FULTON COUNTY SCEINIC VIEWFULTON COUNTY SCEINIC VIEW · 90 servedInactive
- FUNNEMAN SUBDIVISIONFUNNEMAN SUBDIVISION · 25 servedInactive
- FYRE LAKE WATER COMPANYSHERRARD · 760 servedActive
- G W HARTMAN FIRST ADDNURBANA · 25 servedInactive
- GALATIAGALATIA · 887 servedActive
- GALENAGALENA · 3,308 servedActive
- GALENA KNOLLS SBDVMEDINA TWP · 273 servedInactive
- GALESBURGGALESBURG · 31,620 servedActive
- GALESBURG MHC2,015 servedInactive
- GALLATIN-WHITE WATER DISTRICTNORRIS CITY · 1,370 servedActive
- GALVAGALVA · 2,449 servedActive
- GANGLGANGL · 25 servedInactive
- GARDEN HOME SDGARDEN HOMES · 1,472 servedActive
- GARDEN STREET IMPROVEMENT ASSOCIATIONJOLIET · 54 servedActive
- GARDNERGARDNER · 1,361 servedActive
- GARRETTATWOOD · 198 servedActive
- GASLITE COURT MHCENGLEWOOD · 148 servedActive
- GATEWAY MHPFRANKFORT · 884 servedActive
- GATEWAY REGIONAL WATER COMPANYSANDOVAL · 1 servedActive
- GENDA FORREST VIEW MHPGENDA FORREST VIEW MHP · 25 servedInactive
- GENESEOGENESEO · 6,539 servedActive
- GENESEO HICKORY HILLS HOAGENESEO · 83 servedActive
- GENESEO HILLS SUBDIVISIONGENESEO · 500 servedActive
- GENEVAGENEVA · 21,247 servedActive
- GENOAGENOA · 5,298 servedActive
- GEORGE HANKSGEORGE HANKS · 25 servedInactive
- GEORGETOWNGEORGETOWN · 4,200 servedActive
- GERALD CURRYGERALD CURRY · 25 servedInactive
- GERMAN VALLEYGERMAN VALLEY · 463 servedActive
- GERMANTOWNGERMANTOWN · 1,537 servedActive
- GIANNIS MHPCRETE · 11 servedInactive
- GIBSON CITYGIBSON CITY · 3,500 servedActive
- GIDEONSEN'S MOBILE HOME COURTGIDEONSEN'S MOBILE HOME COURT · 25 servedInactive
- GIFFORDGIFFORD · 911 servedActive
- GILBERTSGILBERTS · 8,366 servedActive
- GILLESPIEGILLESPIE · 3,737 servedActive
- GILMANGILMAN · 1,793 servedActive
- GIRARDGIRARD · 1,885 servedActive
- GLADSTONEGLADSTONE · 387 servedActive
- GLEN ACRES TRAILER PARKGLEN ACRES TRAILER PARK · 25 servedInactive
- GLEN CARBONGLEN CARBON · 12,618 servedActive
- GLEN EDEN ESTATES HOMEOWNERS ASSOCIATIONNORWOOD PARK TOWNSHIP · 312 servedActive
- GLEN ELLYNGLEN ELLYN · 28,850 servedActive
- GLEN ELLYN HEIGHTS SUBDIVISIONDARIEN · 1,931 servedActive
- GLENBROOK SDTECHNY · 822 servedActive
- GLENCOEGLENCOE · 8,849 servedActive
- GLENDALE HEIGHTSGLENDALE HEIGHTS · 33,176 servedActive
- GLENDALE MHPDANVILLE TWP · 0 servedInactive
- GLENDALE WATER ASSOCIATIONSILVIS · 0 servedInactive
- GLENKIRK CAMPUS SOUTHFREMONT TWP · 25 servedInactive
- GLENSTONE SBDV HOALONG GROVE · 65 servedActive
- GLENVIEWGLENVIEW · 47,856 servedActive
- GLENVIEW NAVAL AIR STATIONNORTHFIELD TWP · 1,500 servedInactive
- GLENWOODGLENWOOD · 8,956 servedActive
- GLENWOOD - OUTBACKMARSEILLES · 25 servedInactive
- GLORIANE ACRES WTR ASSNCINCINNATI TWP · 198 servedInactive
- GODAIR HOMESDOWNERS GR TWP · 230 servedInactive
- GODLEY PUBLIC WATER DISTRICTGODLEY · 566 servedActive
- GODLOWSKI RONGODLOWSKI RON · 25 servedInactive
- GOLCONDAGOLCONDA · 630 servedActive
- GOLDENGOLDEN · 620 servedActive
- GOLDEN ACRES WELL 1BLACKHAWK TWP · 25 servedInactive
- GOLDEN GATEGOLDEN GATE · 71 servedInactive
- GOLDIE B FLOBERG CNTRROCKTON TWP · 55 servedInactive
- GOLFGOLF · 497 servedActive
- GOLF GREENWOOD IMPROVEMENT ASSOCIATIONDES PLAINES · 219 servedInactive
- GOOD HOPEGOOD HOPE · 536 servedActive
- GOOD SAMARITAN PONTIACPONTIAC · 118 servedInactive
- GOOD SAMARITAN RETREAT CENTERGOOD SAMARITAN RETREAT CENTER · 25 servedInactive
- GOOD SHEPHERD MANORMOMENCE · 12 servedInactive
- GOODFIELDGOODFIELD · 936 servedActive
- GOREVILLEGOREVILLE · 1,068 servedActive
- GORHAMGORHAM · 1,143 servedActive
- GRAFTONGRAFTON · 775 servedInactive
- GRAHAM CORRECTIONAL SITETAYLORVILLE · 2,155 servedActive
- GRAND RIDGEGRAND RIDGE · 515 servedActive
- GRAND TOWERGRAND TOWER · 559 servedActive
- GRAND VALLEY VILLAGE MHPSPRINGFIELD · 912 servedActive
- GRANDVIEWSPRINGFIELD · 1,405 servedActive
- GRANDWOOD PARK SUBDIVISION - LAKE CO PWLIBERTYVILLE · 5,751 servedActive
- GRANT PARKKANKAKEE · 1,400 servedInactive
- GRANTFORKHIGHLAND · 1,766 servedActive
- GRANVILLEGRANVILLE · 1,359 servedActive
- GRAYSLAKEGRAYSLAKE · 21,248 servedActive
- GRAYVILLEGRAYVILLE · 1,613 servedActive
- GREAT LAKES NAVAL TRAINING STATIONGREAT LAKES · 23,000 servedActive
- GREAT OAKS AND BEACON HILLS APARTMENTSBLOOMFIELD HILLS · 2,420 servedInactive
- GREEN ACRES APTSGREEN ACRES APTS · 25 servedInactive
- GREEN ACRES MHPCOLORADO SPRINGS · 170 servedActive
- GREEN ACRES SUBDIVISIONGREEN ACRES SUBDIVISION · 25 servedInactive
- GREEN GIANT PACKING CMPNYBELVIDERE · 25 servedInactive
- GREEN MEADOW ESTATES OF ROCKFORD LLCKNOXVILLE · 250 servedActive
- GREEN OAKSGREEN OAKS · 1,470 servedActive
- GREEN RIVER WELL 5COLONA TWP · 25 servedInactive
- GREEN VALLEYGREEN VALLEY · 638 servedActive
- GREENE CNTY WORK CAMPWHITE HALL · 2,800 servedInactive
- GREENE COUNTY RWDCARROLLTON · 3,786 servedActive
- GREENFIELDGREENFIELD · 1,097 servedActive
- GREENFIELD CMNTY WELL CMPNYJOLIET TWP · 25 servedInactive
- GREENUPGREENUP · 1,513 servedActive
- GREENVIEWGREENVIEW · 778 servedActive
- GREENVIEW ESTATES MHPBELVIDERE · 710 servedActive
- GREENVILLEGREENVILLE · 8,310 servedActive
- GREENWOOD-CREEK NATION WATER COMPANYMULKEYTOWN · 2,530 servedActive
- GRIDLEYGRIDLEY · 1,411 servedActive
- GRIGGSVILLEGRIGGSVILLE · 1,097 servedActive
- GROVELAND TOWNSHIP WATER DISTRICTGROVELAND · 2,185 servedActive
- GRUNDY COUNTY RIDGECRESTGRUNDY COUNTY RIDGECREST · 65 servedInactive
- GUNFLINT SBDVBLOUNT TWP · 25 servedInactive
- GUNFLINT SUBDIVISIONGUNFLINT SUBDIVISION · 25 servedInactive
- GURNEEGURNEE · 30,193 servedActive
- H CARLSONH CARLSON · 25 servedInactive
- H T WTR CORPJUBILEE TWP · 25 servedInactive
- HAFER WATER DISTRICT SYSTEMFREEMAN SPUR · 226 servedInactive
- HAINESVILLEVOLO · 3,528 servedActive
- HALEN HTS ADDNBLACKHAWK TWP · 25 servedInactive
- HAMELHAMEL · 1,087 servedActive
- HAMILTONHAMILTON · 2,753 servedActive
- HAMILTON COUNTY WATER DISTRICTMCLEANSBORO · 3,958 servedActive
- HAMMONDHAMMOND · 478 servedActive
- HAMPSHIREHAMPSHIRE · 7,758 servedActive
- HAMPTONHAMPTON · 1,863 servedActive
- HANAFORDLOGAN · 883 servedActive
- HANNA CITYHANNA CITY · 1,253 servedActive
- HANNA CITY WORK CAMPROSEFIELD TWP · 285 servedInactive
- HANOVERHANOVER · 863 servedActive
- HANOVER PARKHANOVER PARK · 37,470 servedActive
- HARBOR LITES-PISTAKEE FSHG CLCHICAGO · 132 servedActive
- HARBOR POINT ESTATES MHPNORTHBROOK · 950 servedActive
- HARDIN CNTY PBLC WORK PRGMUNSPEC PL IN CO · 200 servedInactive
- HARDIN COUNTY WATER DISTRICT NO.1CAVE IN ROCK · 843 servedActive
- HARDING ROAD APARTMENTS25 servedInactive
- HARDINVILLE WATER COMPANYROBINSON · 3,403 servedActive
- HARMONHARMON · 111 servedActive
- HARMONY ACRES MHPCHALMERS TWP · 25 servedInactive
- HARRISBURGHARRISBURG · 8,524 servedActive
- HARRISTOWNDECATUR · 1,320 servedActive
- HARTFORDHARTFORD · 1,260 servedActive
- HARTSBURGHARTSBURG · 262 servedActive
- HARVARDHARVARD · 9,469 servedActive
- HARVARD HILLS WATER CORPORATIONWASHINGTON · 215 servedActive
- HARVELHARVEL · 191 servedActive
- HARVEST ESTATES (FORMERLY BILLS MHP)DENVER · 40 servedActive
- HARVEYHARVEY · 25,000 servedActive
- HARWOOD HEIGHTSHARDWOOD HEIGHTS · 9,065 servedActive
- HAVANAHAVANA · 2,963 servedActive
- HAWTHORN ESTATES SUBDIVISIONMORRIS · 49 servedActive
- HAZEL CRESTHAZEL CREST · 13,098 servedActive
- HAZELCREST SUBDIVISION WELL #1HAZELCREST SUBDIVISION WELL #1 · 25 servedInactive
- HAZELWOOD 1ST ADDN WELL 2PHENIX TWP · 25 servedInactive
- HAZELWOOD 1ST ADDN WELL 3PHENIX TWP · 25 servedInactive
- HAZELWOOD 1ST ADDN WELL 5PHENIX TWP · 32 servedInactive
- HAZELWOOD 2ND ADDN WELL 1PHENIX TWP · 25 servedInactive
- HAZELWOOD 2ND ADDN WELL 2PHENIX TWP · 25 servedInactive
- HAZELWOOD 2ND ADDN WELL 3PHENIX TWP · 32 servedInactive
- HAZELWOOD 3RD ADDN WELL 1PHENIX TWP · 32 servedInactive
- HAZELWOOD 4TH ADDITIONGENESEO · 140 servedActive
- HAZELWOOD HEIGHTS SUBDIVISIONGENESEO · 235 servedActive
- HAZELWOOD WEST SUBDIVISIONGENESEO · 70 servedActive
- HEAP APTSEMMET TWP · 64 servedInactive
- HEARTVILLE PWDDIETERICH · 1,092 servedActive
- HEATHER LYNN MOBILE HOME PARK25 servedInactive
- HEATHERFIELD SUBDIVISIONMORRIS · 90 servedActive
- HEBRONHEBRON · 1,368 servedActive
- HEBRON PWDUNSPEC PL IN CO · 10,800 servedInactive
- HECKERHECKER · 429 servedActive
- HEIDEN GARDENS CONDOSLAKE BLUFF · 217 servedActive
- HEIMERDINGER DAIRY FARMJEFFERSON TWP · 25 servedInactive
- HENDERSONHENDERSON · 375 servedActive
- HENDERSON PWDCARLINVILLE · 2,045 servedActive
- HENNEPINHENNEPIN · 650 servedInactive
- HENNEPIN PWDHENNEPIN · 750 servedActive
- HENRYHENRY · 2,230 servedActive
- HENRY CO HAZELWOOD 1ST WELL 428 servedInactive
- HENRY CO HAZELWOOD 1ST WELL 632 servedInactive
- HENRY CO ROCK RIVERVIEW WELL132 servedInactive
- HENRY COUNTY DAYTON'S VALHENRY COUNTY DAYTON'S VAL · 28 servedInactive
- HENRY COUNTY HAZELWOOD 1SHENRY COUNTY HAZELWOOD 1S · 28 servedInactive
- HENRY LEADY TRAILER PARKHENRY LEADY TRAILER PARK · 25 servedInactive
- HERITAGE LAKES SUBDIVISIONMACKINAW TWP · 1,341 servedInactive
- HERITAGE OF RANTOULCROFTON · 500 servedActive
- HERRICKHERRICK · 358 servedActive
- HERRICK HSHANOVER TWP · 57 servedInactive
- HERRINHERRIN · 12,747 servedActive
- HERRON MOBILE HOME PARKHERRON MOBILE HOME PARK · 25 servedInactive
- HERSCHEL SPORTSMANS CLUB, INC.NORTON TWP · 0 servedInactive
- HERSCHERHERSCHER · 1,600 servedActive
- HETTICKHETTICK · 174 servedActive
- HEYWORTHHEYWORTH · 2,853 servedActive
- HICKORY ACRES WTR ASSNCARLINVILLE TWP · 42 servedInactive
- HICKORY HILLSHICKORY HILLS · 14,505 servedActive
- HICKORY HILLS 2ND ADDITIONTAYLOR RIDGE · 42 servedActive
- HICKORY HLS SBDV ASSN 1HOPEDALE TWP · 25 servedInactive
- HICKORY HLS SBDV ASSN 2HOPEDALE TWP · 25 servedInactive
- HICKORY HLS SBDV WELL 1BLACKHAWK TWP · 32 servedInactive
- HICKORY HTS SBDVPINE ROCK TWP · 25 servedInactive
- HICKORY LN HOMEOWNERS ASSNPROVISO TWP · 25 servedInactive
- HICKORY RIDGEHICKORY RIDGE · 25 servedInactive
- HICKORY-KERTON WTR COOPRUSHVILLE · 2,358 servedActive
- HIDDEN INN MHPRIVERSIDE TWP · 32 servedInactive
- HIDDEN MEADOWSTAYLOR RIDGE · 70 servedInactive
- HIDDEN MEADOWS SBDVUNSPEC PL IN CO · 25 servedInactive
- HIDDEN VALLEY CREEK APARTMENTSNAPERVILLE · 80 servedInactive
- HIDE-A-WAY LAKESYORKVILLE · 50 servedInactive
- HIGH CLIFF ESTATESDENVER · 448 servedActive
- HIGHLANDHIGHLAND · 10,674 servedActive
- HIGHLAND ESTSELGIN · 385 servedInactive
- HIGHLAND HILLS SDDARIEN · 1,071 servedInactive
- HIGHLAND LAKE WATER COMPANYLIBERTYVILLE · 36 servedInactive
- HIGHLAND PARKHIGHLAND PARK · 30,176 servedActive
- HIGHLAND SHORES WATER COMPANYWONDER LAKE · 1,000 servedInactive
- HIGHLAND SUBDIVISIONST. CHARLES · 50 servedActive
- HIGHVIEW MHPHIGHVIEW MHP · 25 servedInactive
- HIGHWAY 37 NORTH PWDMARION · 1,065 servedActive
- HIGHWOODHIGHWOOD · 5,335 servedActive
- HILL CITY WATER DISTRICTBENTON · 452 servedActive
- HILL CRCTL CTRGALESBURG TWP · 1,300 servedInactive
- HILL TOP SANHILL TOP SAN · 25 servedInactive
- HILL-N-DALEHILL-N-DALE · 25 servedInactive
- HILLCRESTROCHELLE · 1,224 servedActive
- HILLCREST COURT 2ND ADDITIONTAYLOR RIDGE · 66 servedActive
- HILLCREST COURT SUBDIVISIONTAYLOR RIDGE · 60 servedActive
- HILLCREST HOMEPERU · 103 servedActive
- HILLCREST M H POTTAWA TWP · 26 servedInactive
- HILLDALE MANOR SUBDIVISIONFOX LAKE · 414 servedActive
- HILLSBOROHILLSBORO · 4,402 servedActive
- HILLSDALE ESTATES, LLCBEAUFORT · 163 servedActive
- HILLSDALE PROPERTIESMOLINE · 66 servedActive
- HILLSIDEHILLSIDE · 8,200 servedActive
- HILLSIDE BERKELEY WATER COMMISSIONBELLWOOD · 1 servedActive
- HILLSIDE MANOR SBDVLIMESTONE TWP · 312 servedInactive
- HILLSIDE MOBILE HOME VILLAGEMT CARMEL · 73 servedInactive
- HILLTOP MHPBLOOMINGTON · 1,360 servedActive
- HILLVIEWROODHOUSE · 94 servedActive
- HILLVIEW MHPPRINCETON TWP · 25 servedInactive
- HILLVIEW SUBDIVISIONNEW LENOX · 100 servedInactive
- HINCKLEYHINCKLEY · 2,006 servedActive
- HINDSBOROOAKLAND · 296 servedActive
- HINSDALEHINSDALE · 17,900 servedActive
- HINSWOOD SBDVDOWNERS GR TWP · 3,700 servedInactive
- HIRES TRACE SUBDMORTON TWP · 25 servedInactive
- HOBSON VALLEY WATER SYSTEMDARIEN · 400 servedActive
- HODGKINSHODGKINS · 1,472 servedActive
- HOFER SUBDIVISIONHOFER SUBDIVISION · 25 servedInactive
- HOFFMANPATOKA · 452 servedActive
- HOFFMAN ESTATESHOFFMAN ESTATES · 25 servedInactive
- HOFFMAN ESTATESHOFFMAN ESTATES · 50,179 servedActive
- HOFFMAN ESTS SOUTHHOFFMAN ESTATES · 25 servedInactive
- HOFFMAN RURAL WATER COMPANYCARLYLE · 1,015 servedActive
- HOLIDAY ACRES UTIL INCROCKFORD TWP · 250 servedInactive
- HOLIDAY ESTATESHOLIDAY ESTATES · 25 servedInactive
- HOLIDAY ESTATES SUBDIVISIONHOLIDAY ESTATES SUBDIVISION · 25 servedInactive
- HOLIDAY MHPNAMEOKI TWP · 425 servedInactive
- HOLIDAY SHORES SDEDWARDSVILLE · 2,840 servedActive
- HOLLANDS GROVE COURT SUBDIVISIONEAST PEORIA · 40 servedActive
- HOLLOWAYVILLEHOLLOWAYVILLE · 36 servedActive
- HOLLY HILLS SBDVMACKINAW TWP · 40 servedInactive
- HOLLY HOCK HILL MHPFLAGSTAFF · 47 servedActive
- HOLMES SMALL FARM SBDVHANNA TWP · 32 servedInactive
- HOLY FAMILY VILLALEMONT · 200 servedInactive
- HOME NURSERY INCLOOKNG GLASS TWP · 77 servedInactive
- HOMERHOMER · 1,200 servedActive
- HOMETOWNHOMETOWN · 4,240 servedActive
- HOMEWOODHOMEWOOD · 19,463 servedActive
- HONEYCUTT HILL MHP LLCMORRISON · 75 servedActive
- HONONEGAH CNTRY ESTSROSCOE TWP · 600 servedInactive
- HOOPESTONHOOPESTON · 5,802 servedActive
- HOOTON PWDDANVILLE TWP · 1,550 servedInactive
- HOPEDALEHOPEDALE · 830 servedActive
- HOPEWELLHOPEWELL · 420 servedActive
- HOPKINS PARKHOPKINS PARK · 579 servedActive
- HOYLETONCENTRALIA · 658 servedActive
- HOYLETON RWCCENTRALIA · 1,020 servedActive
- HOYLETON-NEW MINDENCENTRALIA · 35 servedActive
- HUDSONHUDSON · 1,847 servedActive
- HUFFMANS MHPBARNETT TWP · 25 servedInactive
- HULLHULL · 435 servedActive
- HUMBOLDTHUMBOLDT · 361 servedActive
- HUMEGEORGETOWN · 450 servedActive
- HUNTERS KNOLL SBDVBLOOMINGTON TWP · 25 servedInactive
- HUNTLEYHUNTLEY · 28,495 servedActive
- HUNTLEY CMNTY SBDVCRETE · 51 servedInactive
- HUNTLEY HLS CRPRT CTRRUTLAND TWP · 25 servedInactive
- HURRICANE SBDV100 servedInactive
- HURSTHURST · 782 servedActive
- HUTSONVILLEHUTSONVILLE · 613 servedActive
- HYDE PARK MHPSO WHEATLAND TWP · 390 servedInactive
- HYDRONIC SUPPLYHYDRONIC SUPPLY · 25 servedInactive
- IL AMERICAN WTR CMPNY-CAMELOTLIMESTONE TWP · 1,200 servedInactive
- IL AMERICAN WTR CMPNY-ROMECHILLICOTHE TWP · 295 servedInactive
- IL AMERICAN-ALPINE HEIGHTSGODFREY · 707 servedActive
- IL AMERICAN-ALTONGODFREY · 46,127 servedActive
- IL AMERICAN-ANDALUSIAGODFREY · 1,184 servedActive
- IL AMERICAN-ARBURYGODFREY · 1,225 servedActive
- IL AMERICAN-ARROWHEADGODFREY · 1,581 servedActive
- IL AMERICAN-BROADLANDSGODFREY · 330 servedActive
- IL AMERICAN-CAIROGODFREY · 1,821 servedActive
- IL AMERICAN-CENTRAL STATES DSTGODFREY · 117 servedActive
- IL AMERICAN-CHAMPAIGNGODFREY · 150,000 servedActive
- IL AMERICAN-CHICAGO SUBURBANGODFREY · 11,187 servedActive
- IL AMERICAN-CHICKASAWHOMER TWP · 12,432 servedInactive
- IL AMERICAN-COUNTRY CLUBGODFREY · 1,014 servedActive
- IL AMERICAN-DERBY MEADOWSHOMER TWP · 6,438 servedInactive
- IL AMERICAN-DUPAGE UTILITYGODFREY · 6,613 servedActive
- IL AMERICAN-EAST ST LOUISGODFREY · 131,368 servedActive
- IL AMERICAN-FARMINGTONGODFREY · 2,448 servedActive
- IL AMERICAN-FERNWAYGODFREY · 5,223 servedActive
- IL AMERICAN-FISHERGODFREY · 2,026 servedActive
- IL AMERICAN-GLASFORDGODFREY · 1,193 servedActive
- IL AMERICAN-GRANITE CITYGODFREY · 27,549 servedActive
- IL AMERICAN-HARDINGODFREY · 839 servedActive
- IL AMERICAN-HARDIN COUNTYGODFREY · 1,373 servedActive
- IL AMERICAN-HOLLISGODFREY · 107 servedActive
- IL AMERICAN-HOMER TOWNSHIPGODFREY · 24,543 servedActive
- IL AMERICAN-JERSEYVILLEGODFREY · 8,737 servedActive
- IL AMERICAN-LAKE WATER COMPANYGODFREY · 0 servedActive
- IL AMERICAN-LEONOREGODFREY · 111 servedActive
- IL AMERICAN-LIBERTY RIDGE EASTGODFREY · 320 servedActive
- IL AMERICAN-LIBERTY RIDGE WESTGODFREY · 3,307 servedActive
- IL AMERICAN-LINCOLNGODFREY · 15,200 servedActive
- IL AMERICAN-LIVINGSTONGODFREY · 825 servedActive
- IL AMERICAN-LOMBARD HEIGHTSGODFREY · 679 servedActive
- IL AMERICAN-MIDWEST PALOSGODFREY · 132 servedActive
- IL AMERICAN-MORELANDGODFREY · 445 servedActive
- IL AMERICAN-MOUNT PULASKIGODFREY · 1,506 servedActive
- IL AMERICAN-NETTLE CREEKGODFREY · 317 servedActive
- IL AMERICAN-PEKINGODFREY · 31,731 servedActive
- IL AMERICAN-PEORIAGODFREY · 137,575 servedActive
- IL AMERICAN-PONTIACGODFREY · 11,864 servedActive
- IL AMERICAN-RANSOMBELLEVILLE · 483 servedInactive
- IL AMERICAN-RIDGECRESTGODFREY · 203 servedActive
- IL AMERICAN-RIVER GRANGEGODFREY · 62 servedActive
- IL AMERICAN-ROLLINSGODFREY · 231 servedActive
- IL AMERICAN-ROSICLAREGODFREY · 1,387 servedActive
- IL AMERICAN-SADORUSBELLEVILLE · 426 servedInactive
- IL AMERICAN-SANTA FEWOODRIDGE · 125 servedInactive
- IL AMERICAN-SAUNEMINGODFREY · 456 servedActive
- IL AMERICAN-SOUTH BELOITGODFREY · 7,893 servedActive
- IL AMERICAN-STERLINGGODFREY · 14,782 servedActive
- IL AMERICAN-STREATORGODFREY · 19,000 servedActive
- IL AMERICAN-TERRA COTTAGODFREY · 681 servedActive
- IL AMERICAN-TOLONOGODFREY · 3,604 servedActive
- IL AMERICAN-VALLEY MARINAGODFREY · 1,102 servedActive
- IL AMERICAN-VALLEY VIEWGODFREY · 6,721 servedActive
- IL AMERICAN-VILLA GROVEGODFREY · 2,467 servedActive
- IL AMERICAN-WASHINGTON ESTATESGODFREY · 1,278 servedActive
- IL AMERICAN-WAYCINDENGODFREY · 1,934 servedActive
- IL AMERICAN-WEST SUBURBANGODFREY · 73,978 servedActive
- IL PRAIRIE ESTATE SBDV WATER ASSOCIATIONMARSEILLES · 78 servedActive
- IL RIVER CRCTL CTRCANTON TWP · 1,516 servedInactive
- IL VETERANS HOME (QUINCY)QUINCY · 401 servedActive
- IL VETERANS HOME-MANTENOMANTENO · 256 servedActive
- IL YOUTH CENTER KEWANEEKEWANEE · 400 servedInactive
- IL YOUTH CENTER ST CHARLESST. CHARLES · 260 servedActive
- IL YTH CNTR-HARRISBURGHARRISBURG · 510 servedInactive
- IL YTH CNTR-PERE MARQUETTEQUARRY TWP · 116 servedInactive
- IL YTH CNTR-VALLEY VIEWST CHARLES TWP · 400 servedInactive
- ILCV CANDLE MHP, LLCCEDAREDGE · 148 servedActive
- ILDU LEPERE MHP, LLCCEDAREDGE · 250 servedActive
- ILLINOIS BENEDICTINE COLLEGELISLE TWP · 2,700 servedInactive
- ILLINOIS CITY WATER WORKSDRURY TWP · 25 servedInactive
- ILLINOIS STATE FAIRGROUNDSUNSPEC PL IN CO · 25 servedInactive
- ILLINOIS STATE UNIVERSITY-NORMALNORMAL · 6,600 servedActive
- ILLIOPOLISILLIOPOLIS · 1,037 servedActive
- ILMO OAK LAWN MHP LLCCEDAREDGE · 950 servedInactive
- ILOG OGLESBY MHP, LLCPONTIAC · 88 servedActive
- ILPO REDWOOD MHP LLCPONTIAC · 300 servedActive
- ILUR LIBERTY COMMONS MHP LLCCROFTON · 865 servedActive
- ILUR PORTFOLIO 5 - TRAILSIDE MHP LLCCROFTON · 62 servedActive
- ILUR PORTFOLIO 5 - WILSON MHP LLCCROFTON · 62 servedActive
- ILUR PORTFOLIO 5-SURBANA ESTATES MHP LLCCROFTON · 209 servedActive
- ILUR PORTFOLIOS - CARRIAGE ESTATES LLCCROFTON · 115 servedActive
- ILUR WOODS EDGE MHP LLCCROFTON · 373 servedActive
- IMPERIAL MHCDENVER · 328 servedActive
- INDIAN BLUFFS SUBDIVISIONCOAL VALLEY · 138 servedActive
- INDIAN CREEK HOMEOWNERS AND WATER ASSN.TOWANDA · 210 servedActive
- INDIAN HEAD PARKINDIAN HEAD PARK · 3,240 servedActive
- INDIAN HILLS SUBDIVISIONMILAN · 0 servedInactive
- INDIAN OAK PARK #2INDIAN OAK PARK #2 · 25 servedInactive
- INDIAN OAKS #1INDIAN OAKS #1 · 25 servedInactive
- INDIAN SHORE ACRESINDIAN SHORE ACRES · 25 servedInactive
- INDUSTRYINDUSTRY · 475 servedActive
- INGALLS PARK SUBDIVISIONNEW LENOX · 744 servedActive
- INVERNESS THE SHIRESINVERNESS THE SHIRES · 800 servedInactive
- IOLAIOLA · 158 servedActive
- IPAVAIPAVA · 447 servedActive
- IRIQUOIS CO CRESTVIEW SUBD40 servedInactive
- IRIQUOIS CO KELLART LAKE ASSN40 servedInactive
- IRIQUOIS CO PRICES BREEZY ACRE25 servedInactive
- IROQUOIS MOBILE ESTATES, INC.ST PETERSBURG · 105 servedActive
- IRVINGIRVING · 373 servedActive
- IRVINGTONCENTRALIA · 1,081 servedActive
- ISLAND LAKEISLAND LAKE · 8,066 servedActive
- ISLAND LAKE WTR CMPNYISLAND LAKE · 25 servedInactive
- ITASCAITASCA · 9,506 servedActive
- IUKAIUKA · 486 servedActive
- IVESDALEIVESDALE · 248 servedActive
- JACKSON HTS MHPEMMET TWP · 25 servedInactive
- JACKSONVILLEJACKSONVILLE · 19,903 servedActive
- JACKSONVILLE CRCTL CNTRJACKSONVIL PREC · 980 servedInactive
- JARVIS TWNSHP PWS DSTRCT #1JARVIS TWP · 485 servedInactive
- JASPER WATERWORKS CORPORATIONFAIRFIELD · 1,578 servedActive
- JEFFERSONVILLE (GEFF)JEFFERSONVILLE · 355 servedActive
- JEISYVILLETAYLORVILLE · 102 servedActive
- JEROMESPRINGFIELD · 1,600 servedActive
- JERSEY RWCJERSEYVILLE · 12,750 servedActive
- JESINA OTTOJESINA OTTO · 25 servedInactive
- JEWETTJEWETT · 256 servedActive
- JIM ETHERTON TRAILER PARKJIM ETHERTON TRAILER PARK · 25 servedInactive
- JO DAVIESS COUNTY GRIFFITHS MJO DAVIESS COUNTY GRIFFITHS M · 30 servedInactive
- JOHN DESHIELDS FED HSNG CMPLXEAST ST LOUIS · 600 servedInactive
- JOHNSBURG 1JOHNSBURG · 174 servedActive
- JOHNSBURG NO.2JOHNSBURG · 1,124 servedActive
- JOHNSTON CITYJOHNSTON CITY · 3,509 servedActive
- JOLIETJOLIET · 160,000 servedActive
- JOLIET ARMY AMN PLT - LAP PLTFLORENCE TWP · 25 servedInactive
- JOLIET ARMY AMN PLT - MFG PLTCHANNAHON · 25 servedInactive
- JOLIET CORRECTIONAL CENTERJOLIET · 0 servedInactive
- JOLIET INPATIENT TREATMENT CENTERJOLIET · 486 servedActive
- JOLIET TREATMENT CENTERJOLIET · 217 servedActive
- JONES APTSJONES APTS · 25 servedInactive
- JONESBOROJONESBORO · 1,799 servedActive
- JONESVILLE PWDOGLESGBY · 243 servedActive
- JONS MHPSANDWICH · 92 servedActive
- JOPPAJOPPA · 445 servedActive
- JOYJOY · 377 servedActive
- JUBILEE WATER COMPANY, INC.BRIMFIELD · 72 servedActive
- JULIO GALANDOJULIO GALANDO · 25 servedInactive
- JUNCTION CITYCENTRALIA · 494 servedActive
- JUNE LAKE SBDVUNSPEC PL IN CO · 25 servedInactive
- JUSTICE-WESLEY FIELDSJUSTICE · 1 servedInactive
- JUSTICE-WILLOW SPRINGS WATER COMMISSIONJUSTICE · 18,457 servedActive
- KA HO LAKE ESTATESKA HO LAKE ESTATES · 25 servedInactive
- KAHO PUBLIC WATER DISTRICTMT. OLIVE · 785 servedActive
- KALISKALIS · 25 servedInactive
- KAMPSVILLENEBO · 335 servedActive
- KANEKANE · 296 servedActive
- KANGLEYKANGLEY · 300 servedInactive
- KANKAKEE AREA CAREER CENTERKANKAKEE AREA CAREER CENTER · 25 servedInactive
- KANKAKEE CO A-C MHP25 servedInactive
- KANKAKEE CO BURCH TRLR CT MHP171 servedInactive
- KANKAKEE CORRECTIONAL CENTERMANTENO · 210 servedInactive
- KANSASKANSAS · 707 servedActive
- KAPPA MOBILE HOME PARKKAPPA MOBILE HOME PARK · 25 servedInactive
- KARNAKKARNAK · 432 servedActive
- KASBEERMINERAL TWP · 25 servedInactive
- KASKASKIA SPRINGS WATER CO.VANDALIA · 1 servedActive
- KASKASKIA WATER DISTRICTNEW ATHENS · 0 servedActive
- KEENSBURGKEENSBURG · 234 servedActive
- KEITHSBURGKEITHSBURG · 747 servedActive
- KELLART LAKEKELLART LAKE · 25 servedInactive
- KEMMERER VILLAGEASSUMPTION TWP · 200 servedInactive
- KEMPTONKEMPTON · 177 servedActive
- KENILWORTHKENILWORTH · 2,514 servedActive
- KENNETH HALLKENNETH HALL · 25 servedInactive
- KENNEYCLINTON · 400 servedActive
- KEWANEEKEWANEE · 12,509 servedActive
- KEWANEE LSRCKEWANEE · 200 servedActive
- KEYESPORTKEYESPORT · 625 servedActive
- KILDEER PROPERTIES HMWNRS ASSNKILDEER · 224 servedInactive
- KILJORDAN MEADOWSMACOMB · 282 servedActive
- KINCADE ACRES MHPOLNEY · 125 servedInactive
- KINCAIDKINCAID · 1,561 servedActive
- KINDERHOOKKINDERHOOK · 322 servedActive
- KINGS MOBILE COURT MHPOTTAWA · 0 servedInactive
- KINGSBURY WTR ASSNHAMPTON TWP · 25 servedInactive
- KINGSTONKINGSTON · 1,160 servedActive
- KINGSTON MINESKINGSTON MINES · 259 servedActive
- KINKAID AREA WATER SYSTEMMURPHYSBORO · 1 servedActive
- KINMUNDYKINMUNDY · 940 servedActive
- KINSMANDWIGHT · 99 servedActive
- KIRK WATER LINE INCROBINSON · 72 servedInactive
- KIRKLANDKIRKLAND · 2,000 servedActive
- KIRKLAND CONGRESS LAKE MHPKIRKLAND CONGRESS LAKE MHP · 25 servedInactive
- KIRKWOODKIRKWOOD · 714 servedActive
- KISHWAUKEE-KILBUCK ASSNWORTH TWP · 90 servedInactive
- KLEIN EMILKLEIN EMIL · 25 servedInactive
- KLINE TRAILER CTKLINE TRAILER CT · 25 servedInactive
- KLINGBERG SCHOOLSKLINGBERG SCHOOLS · 25 servedInactive
- KLINGBERG SCHOOLSKLINGBERG SCHOOLS · 25 servedInactive
- KNOLLS EDGE SUBDIVISIONMONROE CENTER · 68 servedActive
- KNOLLWOOD MHPKNOLLWOOD MHP · 25 servedInactive
- KNOX CO BREEZY BLUFF WTR CORP43 servedInactive
- KNOXVILLEKNOXVILLE · 3,120 servedActive
- KOUNTRY AIRE MHPOTTAWA TWP · 58 servedInactive
- L AND G MHPMOLINE · 75 servedInactive
- LA BELLA OF CLIFTONWATSEKA · 55 servedActive
- LA GRANGELA GRANGE · 16,200 servedActive
- LA GRANGE ESTATES MHPLAGRANGE · 440 servedActive
- LA GRANGE HIGHLANDS SANITARY DISTRICTLAGRANGE · 6,600 servedActive
- LA GRANGE PARKLAGRANGE PARK · 13,011 servedActive
- LA PRAIRIELA PRAIRIE · 47 servedActive
- LA ROSELAROSE · 96 servedActive
- LA SALLELA SALLE · 9,700 servedActive
- LA SALLE CO HAMPTON MHP50 servedInactive
- LA SALLE COUNTY GLENWOOD PWLA SALLE COUNTY GLENWOOD PW · 450 servedInactive
- LA SALLE COUNTY NURSING HOMEOTTAWA · 100 servedActive
- LA SALLE COUNTY RICHMOND SUBLA SALLE COUNTY RICHMOND SUB · 28 servedInactive
- LACONLACON · 1,878 servedActive
- LADDLADD · 1,263 servedActive
- LAFAYETTELAFAYETTE · 250 servedActive
- LAHARPELA HARPE · 1,200 servedActive
- LAKE ARISPIE WATER COMPANY, INC.PRINCETON · 50 servedInactive
- LAKE BARRINGTONLAKE BARRINGTON · 500 servedActive
- LAKE BARRINGTON SHORES SUBDIVSIONLAKE BARRINGTON · 2,300 servedActive
- LAKE BLUFFLAKE BLUFF · 5,600 servedActive
- LAKE BLUFF ESTATES MHPMELROSE PARK · 165 servedActive
- LAKE BLVD PWDUNSPEC PL IN CO · 600 servedInactive
- LAKE CO. PW - ARDEN SHORES ESTATESLIBERTYVILLE · 105 servedActive
- LAKE COUNTY NORTH LIBERLAKE COUNTY NORTH LIBER · 518 servedInactive
- LAKE COUNTY PUBLIC WATER DISTRICTZION · 1 servedActive
- LAKE COUNTY PW- HAWTHORN WOODSLIBERTYVILLE · 675 servedActive
- LAKE FORESTLAKE FOREST · 19,642 servedActive
- LAKE IN THE HILLSLAKE IN THE HILLS · 28,661 servedActive
- LAKE IN THE WOODS SBDVDOWNERS GR TWP · 1,060 servedInactive
- LAKE INDIAN HILLS SUBDIVISIONCARBONDALE · 108 servedInactive
- LAKE IROQUOIS ASSOCIATIONLODA · 800 servedActive
- LAKE LYNWOOD WATER SYSTEMLYNN CENTER · 75 servedActive
- LAKE MATTOON PWDNEOGA · 1,100 servedInactive
- LAKE OF EGYPT PWDMARION · 11,368 servedActive
- LAKE RUN APTSNORTHFIELD TWP · 700 servedInactive
- LAKE SARA AREA WATER CO-OP, INC.EFFINGHAM · 3,352 servedActive
- LAKE SHANNONREDDICK · 500 servedActive
- LAKE THUNDERBIRD SUBDIVSIONPERU · 450 servedActive
- LAKE VIEW MHPBEACH PARK · 568 servedActive
- LAKE VIEW MHPLAKE VIEW MHP · 25 servedInactive
- LAKE VILLALAKE VILLA · 8,829 servedActive
- LAKE WILDWIND LLCMETAMORA · 200 servedActive
- LAKE WILDWOOD MHPLAKE WILDWOOD MHP · 25 servedInactive
- LAKE WILLIAMSON CHRISTIAN CENTERCARLINVILLE · 1,250 servedActive
- LAKE WINDERMERE ESTATES SUBDIVISIONTREMONT · 300 servedActive
- LAKE ZURICHLAKE ZURICH · 19,759 servedActive
- LAKEMOORLAKEMOOR · 2,720 servedActive
- LAKESIDE PWDCARBONDALE · 3,065 servedActive
- LAKEVIEW ACRES HOME OWNERS ASSNRICHMOND · 35 servedInactive
- LAKEVIEW ESTATES MHPDAVENPORT · 0 servedInactive
- LAKEVIEW HILLS WATER SUPPLY COMPANYSTERLING · 10 servedInactive
- LAKEVIEW IMPRV ASSNROCKDALE · 90 servedInactive
- LAKEVIEW MHPBYRON · 24 servedInactive
- LAKEVIEW RANCH MHPMATTOON · 50 servedInactive
- LAKEWOODLAKEWOOD · 4,267 servedActive
- LAKEWOOD SHORES IMPROVEMENT ASSOCIATIONWILMINGTON · 868 servedActive
- LAKEWOOD WTR SYSELA TWP · 25 servedInactive
- LAMB'S FARMLIBERTYVILLE · 175 servedInactive
- LAMOILLELA MOILLE · 750 servedActive
- LAMPLIGHTERLAMPLIGHTER · 25 servedInactive
- LANARKLANARK · 1,504 servedActive
- LAND AND WTR ASSNOTTAWA · 83 servedActive
- LANGLEYVILLE PWDLANGLEYVILLE · 450 servedActive
- LANSINGLANSING · 29,076 servedActive
- LAPLACEDECATUR · 0 servedInactive
- LARCHMONT SUBDIVISIONROCKFORD · 18 servedInactive
- LATHAMLATHAM · 380 servedActive
- LAWNDALE MHPDANVILLE TWP · 26 servedInactive
- LAWRENCE COUNTY CORRECTIONAL CENTERDIETERICH · 870 servedActive
- LAWRENCEVILLELAWRENCEVILLE · 4,524 servedActive
- LCPW - BROOKS FARM SUBDIVISIONLIBERTYVILLE · 1,563 servedActive
- LCPW - HIGHLAND LAKE SUBDIVISIONLIBERTYVILLE · 330 servedActive
- LCPW - OAK TERRACELIBERTYVILLE · 45 servedActive
- LCPW - PEKARA SUBDIVISIONLIBERTYVILLE · 3,711 servedActive
- LCPW-KNOLLWOOD PWSLIBERTYVILLE · 6,078 servedInactive
- LE ROYLEROY · 3,498 servedActive
- LEAF RIVERLEAF RIVER · 403 servedActive
- LEANNA LKSIDE WELL 1OWEN TWP · 25 servedInactive
- LEBANONLEBANON · 4,714 servedActive
- LEDRONLEDRON · 25 servedInactive
- LEELEE · 313 servedActive
- LEE CO KA-RON APTS58 servedInactive
- LEGEND LAKES WATER ASSOCIATIONROSCOE · 250 servedActive
- LEISURELAND MHPPONTOOSUC TWP · 27 servedInactive
- LELANDLELAND · 951 servedActive
- LEMONTLEMONT · 17,500 servedActive
- LENALENA · 2,680 servedActive
- LENTZ TERRY MLENTZ TERRY M · 25 servedInactive
- LENZBURGSWANSEA · 616 servedActive
- LERNAMATTOON · 350 servedInactive
- LEVEL ACRES BRIARGATE WTR ASSNCOLONA TWP · 25 servedInactive
- LEVEL ACRES WELL 1COLONA TWP · 32 servedInactive
- LEVEL ACRES WELL 2COLONA TWP · 32 servedInactive
- LEVEL ACRES WTR SYS INCCOLONA TWP · 25 servedInactive
- LEWIS UNIVLOCKPORT TWP · 2,500 servedInactive
- LEWISTOWNLEWISTOWN · 2,400 servedActive
- LEWISVILLE SHELTER CARELEWISVILLE SHELTER CARE · 25 servedInactive
- LEXINGTONLEXINGTON · 1,930 servedActive
- LEYDEN TWSP WATER DISTRICTFRANKLIN PARK · 10,000 servedActive
- LIBERTYLIBERTY · 609 servedActive
- LIBERTY PARK HOMEOWNERS ASSOCIATIONWESTMONT · 950 servedActive
- LIBERTY-LEDFORD PWDHARRISBURG · 1,255 servedActive
- LIBERTYVILLELIBERTYVILLE · 20,500 servedActive
- LICK CREEK PWDBUNCOMBE · 2,365 servedActive
- LILLIAN WHITELILLIAN WHITE · 25 servedInactive
- LIMAURSA · 168 servedActive
- LIMESTONE-WALTERS PWDPEORIA · 2,023 servedActive
- LINCOLN CHRISTIAN COLLEGEWEST LINCOLN TWP · 500 servedInactive
- LINCOLN CORRECTIONAL CENTERLINCOLN · 1,036 servedActive
- LINCOLN DVLCTRBROADWELL TWP · 750 servedInactive
- LINCOLN PLACE MHPSPRINGFIELD · 0 servedInactive
- LINCOLN PRAIRIE WATER COMPANYDIETERICH · 1,015 servedInactive
- LINCOLNSHIRELINCOLNSHIRE · 7,940 servedActive
- LINCOLNWOODLINCOLONWOOD · 13,463 servedActive
- LINDEN MANOR MHPLA VERNE · 84 servedActive
- LINDENHURSTLINDENHURST · 14,500 servedActive
- LINDENTREE TOWNHOMESGLENVIEW · 232 servedActive
- LINDENWOOD WATER ASSOCIATIONLINDENWOOD · 38 servedActive
- LINWAY ESTATES MHPBLUE ISLAND · 380 servedActive
- LISBON NORTH, INC.MORRIS · 25 servedActive
- LISLELISLE · 24,233 servedActive
- LISLE (OLD IL MUN)LISLE · 1,200 servedInactive
- LITCHFIELDLITCHFIELD · 6,648 servedActive
- LITTLE CITY FOUNDATIONPALATINE TWP · 250 servedInactive
- LITTLE FLOCK BAPTIST MHPLITTLE FLOCK BAPTIST MHP · 25 servedInactive
- LITTLE SWAN LAKE SDMONMOUTH · 438 servedActive
- LITTLE YORKLITTLE YORK · 304 servedActive
- LIVINGSTON COUNTY NURSING HOMELIVINGSTON COUNTY NURSING HOME · 25 servedInactive
- LOAMILOAMI · 812 servedActive
- LOCKPORTLOCKPORT · 23,100 servedActive
- LOCKPORT HEIGHTS SDLOCKPORT · 984 servedActive
- LOCKPORT TOWNSHIP WATER SYSTEMJOLIET · 2,610 servedInactive
- LOCKPORT TWSP NORTH WTR SYSLOCKPORT TWP · 795 servedInactive
- LOCKPORT TWSP SOUTH WTR SYSLOCKPORT TWP · 1,770 servedInactive
- LODAWESTVILLE · 398 servedActive
- LOGAN CORRECTIONAL CENTERLINCOLN · 1,500 servedActive
- LOGAN COUNTY HOUSIN AUTHORITYLINCOLN · 120 servedInactive
- LOMBARDLOMBARD · 44,476 servedActive
- LONDON MILLSLONDON MILLS · 500 servedActive
- LONG CREEK TOWNSHIP PWSDECATUR · 7,850 servedActive
- LONG GROVELONG GROVE · 70 servedActive
- LONG POINTUNSPEC PL IN CO · 313 servedInactive
- LONGACRE ESTATES MHPFARMINGTON HILLS · 375 servedActive
- LONGHOLLOW POINTGALENA · 25 servedInactive
- LONGVIEWLONGVIEW · 25 servedInactive
- LONGVIEWLONGVIEW · 146 servedActive
- LONGVIEW WELL 1RANDOLPH TWP · 25 servedInactive
- LORAINELORAINE · 300 servedActive
- LOST LAKE UTILITY DISTRICTDIXON · 704 servedActive
- LOSTANTLOSTANT · 463 servedActive
- LOUISVILLELOUISVILLE · 1,201 servedActive
- LOVES PARKLOVES PARK · 23,335 servedActive
- LOVINGTONARTHUR · 1,024 servedActive
- LOW POINT WATER DISTRICTLOWPOINT · 200 servedActive
- LOYOLA UNIV MED CNTRPROVISO TWP · 8,800 servedInactive
- LUDLOWLUDLOW · 330 servedActive
- LYNDONLYNDON · 537 servedActive
- LYNN WATER ASSOCIATION, INCLYNN CENTER · 100 servedActive
- LYNNWOOD WATER CORPORATIONPERU · 100 servedActive
- LYNWOODLYNWOOD · 9,149 servedActive
- LYNWOOD 1ST ADDN WELL 2HANNA TWP · 25 servedInactive
- LYNWOOD 3RD ADDITIONGENESEO · 100 servedActive
- LYONSLYONS · 10,304 servedActive
- M C L W SYSTEM, INC.MILAN · 98 servedActive
- MA CENTER CHICAGOELBURN · 70 servedActive
- MACEDONIABENTON · 155 servedActive
- MACKINAWMACKINAW · 3,399 servedActive
- MACOMBMACOMB · 15,051 servedActive
- MACONMACON · 1,205 servedActive
- MACOUPIN COUNTY BOLTS MHPMACOUPIN COUNTY BOLTS MHP · 66 servedInactive
- MAEYSTOWNMAEYSTOWN · 340 servedActive
- MAGNOLIAPERU · 244 servedActive
- MAHOMETMAHOMET · 6,580 servedActive
- MALDENMALDEN · 318 servedActive
- MALTAMALTA · 1,143 servedActive
- MANCHESTERROODHOUSE · 297 servedActive
- MANCUSO VILLAGE PARK MHPCLEARWATER · 325 servedActive
- MANHATTANMANHATTAN · 10,340 servedActive
- MANITOMANITO · 1,552 servedActive
- MANLIUSPERU · 298 servedActive
- MANSFIELDMANSFIELD · 939 servedActive
- MANTENOMANTENO · 6,414 servedInactive
- MANTENO MHPBLOOMFIELD HILLS · 144 servedActive
- MAPLE ACRES MHPPLAINFIELD · 260 servedActive
- MAPLE CREST CARE CENTER LLCBELVIDERE · 86 servedInactive
- MAPLE CREST MANOR MHPDENVER · 190 servedActive
- MAPLE HILL IMPRV ASSNDOWNERS GR TWP · 200 servedInactive
- MAPLE LEAF ESTATES WATER CORPORATIONNEW ATHENS · 0 servedInactive
- MAPLE LEAF MHPMAPLE LEAF MHP · 25 servedInactive
- MAPLE PARKMAPLE PARK · 1,484 servedActive
- MAPLE RIDGE MHPMANTENO · 120 servedInactive
- MAPLE VALLEY MHPELKHART · 382 servedInactive
- MAPLECREST SUBDIVISIONMAPLECREST SUBDIVISION · 25 servedInactive
- MAPLECREST SUBDIVISONMAPLECREST SUBDIVISON · 25 servedInactive
- MAPLETONMAPLETON · 261 servedActive
- MAPLEWOOD MAC LLCCROFTON · 270 servedActive
- MAQUONMAQUON · 218 servedActive
- MARENGOMARENGO · 7,572 servedActive
- MARENGO ESTS SBDVUNSPEC PL IN CO · 4,360 servedInactive
- MARGARETS HI-ACRE MHPAURORA · 300 servedActive
- MARGARETS PARK VIEW ESTATES MHPAURORA · 300 servedActive
- MARIETTAMARIETTA · 440 servedActive
- MARINEMARINE · 1,037 servedActive
- MARIONMARION · 16,855 servedActive
- MARION MOBILE HOME VILLAGECARBONDALE · 220 servedActive
- MARISSAFREEBURG · 1,921 servedActive
- MARKMARK · 555 servedActive
- MARKHAMMARKHAM · 12,500 servedActive
- MAROAMAROA · 1,700 servedActive
- MARQUETTE HEIGHTSMARQUETTE HEIGHTS · 2,974 servedActive
- MARSEILLESMARSEILLES · 5,061 servedActive
- MARSEILLES SOUTHMARSEILLES · 100 servedActive
- MARSHALLMARSHALL · 3,947 servedActive
- MARTIN MILLERMARTIN MILLER · 25 servedInactive
- MARTINSVILLEMARTINSVILLE · 1,200 servedActive
- MARTINTONMARTINTON · 375 servedActive
- MARYDEL MANORMARYDEL MANOR · 25 servedInactive
- MARYVILLEMARYVILLE · 10,150 servedActive
- MARYVILLE FARM CAMPUSDURAND · 0 servedInactive
- MASCOUTAHMASCOUTAH · 8,759 servedActive
- MASH CREEK WATER CORPORATIONOLNEY · 31 servedInactive
- MASONDIETERICH · 396 servedInactive
- MASON CITYMASON CITY · 2,558 servedActive
- MASON CO PRAIRIE TRAILS MHP300 servedInactive
- MASON COUNTY CLEARVIEW ESMASON COUNTY CLEARVIEW ES · 25 servedInactive
- MASON COUNTY EDGEWOOD TERMASON COUNTY EDGEWOOD TER · 30 servedInactive
- MASON COUNTY EDGEWOOD TERMASON COUNTY EDGEWOOD TER · 30 servedInactive
- MASON COUNTY EDGEWOOD TERMASON COUNTY EDGEWOOD TER · 30 servedInactive
- MASON COUNTY EDGEWOOD TERMASON COUNTY EDGEWOOD TER · 30 servedInactive
- MASON POINTSULLIVAN · 195 servedInactive
- MASON'S MOBILE MANOR MHPMASON'S MOBILE MANOR MHP · 25 servedInactive
- MATHERVILLEMATHERVILLE · 651 servedActive
- MATIASEKMATIASEK · 25 servedInactive
- MATTESONMATTESON · 18,293 servedActive
- MATTOONMATTOON · 19,500 servedActive
- MAYFAIR SUBDIVISIONMORTON · 98 servedActive
- MAYWOODMAYWOOD · 24,090 servedActive
- MAZONMAZON · 994 servedActive
- MC COOKMCCOOK · 280 servedActive
- MC HENRY COUNTY PISTAKEE HIGMC HENRY COUNTY PISTAKEE HIG · 2,156 servedInactive
- MC HENRY COUNTY SUNSET VIEWMC HENRY COUNTY SUNSET VIEW · 110 servedInactive
- MC LEANMC LEAN · 791 servedActive
- MC LEAN COUNTY MOBILE LANDMC LEAN COUNTY MOBILE LAND · 705 servedInactive
- MCCLURE-EAST CAPE PWDMCCLURE · 910 servedActive
- MCHENRYMCHENRY · 22,335 servedActive
- MCKINLEY MHPDECATUR TWP · 90 servedInactive
- MCLEANSBOROMCLEANSBORO · 2,812 servedActive
- MCNABBMCNABB · 258 servedActive
- MEADOWBROOK MH COMMUNITY, LLCFARMINGTON HILLS · 463 servedActive
- MEADOWBROOK PWDBETHALTO · 1,778 servedActive
- MEADOWOOD SBDVRADNOR TWP · 160 servedInactive
- MEADOWS MENNONITE HOMECHENOA · 140 servedActive
- MEADOWS MENNONITE HOMEMEADOWS MENNONITE HOME · 25 servedInactive
- MEADOWS OF BLOOMINGTON MHPTROY · 343 servedActive
- MEADOWS OF WEST BAY WATER TREATMENTWONDER LAKE · 108 servedInactive
- MECHANICSBURG-BUFFALO WATER COMMISSIONBUFFALO · 1,170 servedActive
- MEDIAMEDIA · 139 servedActive
- MEDINA MEADOWSMEDINA MEADOWS · 25 servedInactive
- MEDORAJERSEYVILLE · 484 servedActive
- MEL KAY MHPFELIX TWP · 88 servedInactive
- MELODY WELL WATER ASSNMELODY WELL WATER ASSN · 25 servedInactive
- MELROSE PARKMELROSE PARK · 24,206 servedActive
- MELROSE RENTALAURORA · 38 servedInactive
- MELTON SUBDIVISIONMELTON SUBDIVISION · 25 servedInactive
- MELVINMELVIN · 465 servedActive
- MENARD CORRECTIONAL CENTERMENARD · 2,950 servedActive
- MENARD COUNTY WEST ATHENSMENARD COUNTY WEST ATHENS · 73 servedInactive
- MENARD RURAL WATER COOPPETERSBURG · 753 servedActive
- MENDONMENDON · 953 servedActive
- MENDOTAMENDOTA · 6,926 servedActive
- MENDOTA ESTATES MHPPERU · 110 servedActive
- MENNONITE CHURCH OF NORMAL25 servedInactive
- MERCER COUNTY ASH SUBD WEMERCER COUNTY ASH SUBD WE · 28 servedInactive
- MERCER COUNTY SW ASHLANDMERCER COUNTY SW ASHLAND · 28 servedInactive
- MEREDOSIAMEREDOSIA · 1,075 servedActive
- MERIDAN MANOR MHPMERIDAN MANOR MHP · 25 servedInactive
- MERIDIAN MHPPOPLAR GROVE · 78 servedActive
- MERIDIAN VILLAGEGLEN CARBON · 339 servedActive
- MERRIONETTE PARKMERRIONETTE PARK · 1,969 servedActive
- MERRY OAKS 1ST ADD WELL #1MERRY OAKS 1ST ADD WELL #1 · 25 servedInactive
- MERRY OAKS 1ST ADD WELL #2MERRY OAKS 1ST ADD WELL #2 · 25 servedInactive
- MERRY OAKS 1ST ADDN WELL #11HAMPTON TWP · 25 servedInactive
- MERRY OAKS 2ND & 3RD ADD WELLMERRY OAKS 2ND & 3RD ADD WELL · 25 servedInactive
- MERRY OAKS 2ND ADD WELL #3MERRY OAKS 2ND ADD WELL #3 · 25 servedInactive
- MERRY OAKS 2ND ADDN WELL #1HAMPTON TWP · 25 servedInactive
- MERRY OAKS 3RD ADD WELL #5MERRY OAKS 3RD ADD WELL #5 · 25 servedInactive
- MERRY OAKS 3RD ADD WELL #6MERRY OAKS 3RD ADD WELL #6 · 25 servedInactive
- METAMORAMETAMORA · 3,895 servedActive
- METCALFMETCALF · 200 servedActive
- METROPOLISMETROPOLIS · 6,309 servedActive
- MID-MARK WATER COMMISSIONMARKHAM · 25 servedActive
- MIDDLETOWNMIDDLETON · 434 servedActive
- MIDLOTHIANMIDLOTHIAN · 14,819 servedActive
- MIDWAY COUNTRY VILLAGE MHPDOUGLAS TWP · 40 servedInactive
- MIDWAY MANOR APTSMIDWAY MANOR APTS · 25 servedInactive
- MIDWAY TRAILER COURTMIDWAY TRAILER COURT · 25 servedInactive
- MIDWEST ESTS SBDVUNSPEC PL IN CO · 25 servedInactive
- MILANMILAN · 4,945 servedActive
- MILFORDMILFORD · 1,306 servedActive
- MILL CREEK MANOR WELL #1MILL CREEK MANOR WELL #1 · 25 servedInactive
- MILL CREEK MANOR WELL 2BLACKHAWK TWP · 32 servedInactive
- MILL CREEK PWDQUINCY · 5,755 servedActive
- MILL CREEK WATER RECLAMATION DISTRICTGENEVA · 8,000 servedActive
- MILL POINT MHPEAST PEORIA · 200 servedActive
- MILL SHOALSMILL SHOALS · 224 servedActive
- MILLEDGEVILLEMILLEDGEVILLE · 989 servedActive
- MILLER SBDVSHELBYVILLE TWP · 25 servedInactive
- MILLSTADTSWANSEA · 4,071 servedActive
- MILLSTONE PWDNASHVILLE · 5,565 servedActive
- MILTONMILTON · 271 servedActive
- MILTON MANOR MHPLA VERNE · 154 servedActive
- MINERALMINERAL · 250 servedActive
- MINIERMINIER · 1,180 servedActive
- MINONKMINONK · 1,928 servedActive
- MINOOKAMINOOKA · 12,800 servedActive
- MISSION BROOK SDNORTHBROOK · 2,852 servedActive
- MISSISSIPPI MANUFACTURED HOME COMMUNITYTROY · 503 servedActive
- MITCHELL PWDGRANITE CITY · 5,253 servedActive
- MITCHELLSVILLE PWDHARRISBURG · 1,970 servedActive
- MOBILE HOME PARKMOBILE HOME PARK · 25 servedInactive
- MODERN MHPJOLIET TWP · 65 servedInactive
- MODESTOMODESTO · 182 servedActive
- MOKENAMOKENA · 19,887 servedActive
- MOLINEMOLINE · 44,500 servedActive
- MOMENCEMOMENCE · 3,075 servedActive
- MONEEMONEE · 5,148 servedActive
- MONFORT'S CAMPER STOPMONFORT'S CAMPER STOP · 25 servedInactive
- MONMOUTHMONMOUTH · 8,902 servedActive
- MONROE COUNTY MONROE CO WTMONROE COUNTY MONROE CO WT · 315 servedInactive
- MONTGOMERYMONTGOMERY · 28,956 servedActive
- MONTGOMERY COUNTY KAMPER COMPAMONTGOMERY COUNTY KAMPER COMPA · 42 servedInactive
- MONTICELLOMONTICELLO · 5,548 servedActive
- MOORES PRAIRIE TOWNSHIP WATER COMPANYBELLE RIVE · 213 servedActive
- MOORINGS HLTH CTRWHEELING TWP · 135 servedInactive
- MOOSEHEARTMOOSEHEART · 272 servedActive
- MOREL DR WTR ASSNBLOOMINGTON TWP · 28 servedInactive
- MORGAN CREEKYORKVILLE · 66 servedActive
- MORNINGSIDE MOBILE ESTATES MHPWAYNESVILLE · 34 servedActive
- MORO PWDMORO · 723 servedActive
- MORRISMORRIS · 14,775 servedActive
- MORRISONMORRISON · 4,188 servedActive
- MORRISONVILLEMORRISONVILLE · 1,068 servedActive
- MORTONMORTON · 17,111 servedActive
- MORTON GROVEMORTON GROVE · 25,297 servedActive
- MORTON GROVE - NILES WATER COMMISSIONNILES · 0 servedActive
- MOULTRIE COUNTY RWDSULLIVAN · 2,600 servedActive
- MOUND CITYMOUND CITY · 526 servedActive
- MOUND PWDCOLLINSVILLE · 1,500 servedActive
- MOUND STATIONMT. STERLING · 122 servedActive
- MOUNDSMOUNDS · 1,135 servedActive
- MOUNT AUBURNMT. AUBURN · 480 servedActive
- MOUNT CARMELMT CARMEL · 7,015 servedActive
- MOUNT CARROLLMT CARROLL · 1,479 servedActive
- MOUNT CLAREGILLESPIE · 311 servedActive
- MOUNT ERIEMOUNT ERIE · 128 servedActive
- MOUNT GILEAD SHLCRHMWOODVILLE TWP · 30 servedInactive
- MOUNT MORRISMT. MORRIS · 2,861 servedActive
- MOUNT MORRIS ESTATES MHPLIMA · 395 servedActive
- MOUNT OLIVEAVISTON · 2,193 servedActive
- MOUNT PROSPECTMOUNT PROSPECT · 41,000 servedActive
- MOUNT SHELTER CARE HOMEMOUNT SHELTER CARE HOME · 25 servedInactive
- MOUNT ST JOSEPH SCHOOL ICFVOLO · 125 servedActive
- MOUNT STERLINGMT. STERLING · 3,271 servedActive
- MOUNT VERNONMOUNT VERNON · 15,793 servedActive
- MOUNT VERNON ASSOCIATION INCEAST DUBUQUE · 438 servedActive
- MOUNT ZIONMOUNT ZION · 5,833 servedActive
- MOWEAQUAMOWEAQUA · 1,785 servedActive
- MT MORRIS ESTATES MHPMT MORRIS ESTATES MHP · 25 servedInactive
- MUDDYMUDDY · 171 servedActive
- MULBERRY GROVEMULBERRY GROVE · 548 servedActive
- MULKEYTOWN PWDMULKEYTOWN · 328 servedActive
- MUNDELEINMUNDELEIN · 31,500 servedActive
- MURDALE PWDMURPHYSBORO · 4,963 servedActive
- MURPHYSBOROMURPHYSBORO · 10,241 servedActive
- MURPHYSBORO LSRCPINCKNEYVILLE · 167 servedActive
- MURRAYVILLE-WOODSON WATER COMMISSIONMURRAYVILLE · 1,403 servedActive
- N E LAWSONN E LAWSON · 25 servedInactive
- NACHUSA LUTHERAN HOMENACHUSA · 24 servedInactive
- NANCYS MHPDAVENPORT · 77 servedActive
- NAPERVILLENAPERVILLE · 156,406 servedActive
- NAPLATEOTTAWA · 465 servedActive
- NASHVILLENASHVILLE · 3,230 servedActive
- NASONBENTON · 207 servedActive
- NATURAL GAS PIPELINE COMPANYPILOT TWP · 75 servedInactive
- NAUVOONAUVOO · 1,200 servedActive
- NEARTOWN MHPROCKFORD · 20 servedInactive
- NEARTOWN MHPNICKY J APARTMENTS · 25 servedInactive
- NEBONEBO · 280 servedActive
- NEOGANEOGA · 1,636 servedActive
- NEPONSETNEPONSET · 450 servedActive
- NEW ATHENSNEW ATHENS · 1,970 servedActive
- NEW BADENNEW BADEN · 4,178 servedActive
- NEW BEDFORDNEW BEDFORD · 25 servedInactive
- NEW BERLINNEW BERLIN · 1,380 servedActive
- NEW BOSTONNEW BOSTON · 613 servedActive
- NEW CANTONNEW CANTON · 359 servedActive
- NEW CHERRY LAKE CLUBDUQUOIN · 96 servedInactive
- NEW HAVENNEW HAVEN · 424 servedActive
- NEW HOLLANDSAN JOSE · 275 servedActive
- NEW HOPE WATERWORKS CORPFAIRFIELD · 1,285 servedActive
- NEW LENOXNEW LENOX · 27,690 servedActive
- NEW LENOX-LARAWAYNEW LENOX TWP · 2,465 servedInactive
- NEW MEMPHIS PWDNEW MEMPHIS · 805 servedActive
- NEW MINDENNEW MINDEN · 343 servedActive
- NEW PERSPECTIVE SENIOR LIVINGINGLESIDE · 62 servedActive
- NEW PIASA CHAUTAUQUA PWSNEBO · 335 servedActive
- NEW SALEM PWDADAIR · 451 servedActive
- NEW WINDSORNEW WINDSOR · 740 servedActive
- NEWARKNEWARK · 986 servedActive
- NEWBURGH LANDOWNERS WTR ASSNROCKFORD TWP · 80 servedInactive
- NEWMANNEWMAN · 836 servedActive
- NEWTONNEWTON · 2,977 servedActive
- NILESNILES · 29,350 servedActive
- NILES NURSING AND REHABILITATIONNILES · 304 servedInactive
- NILWOODMODESTO · 1,394 servedActive
- NOBLENOBLE · 805 servedActive
- NOKOMISNOKOMIS · 2,370 servedActive
- NORMALNORMAL · 52,736 servedActive
- NORRIDGENORRIDGE · 15,251 servedActive
- NORRISNORRIS · 358 servedActive
- NORRIS CITYNORRIS CITY · 2,155 servedActive
- NORTH AURORANORTH AURORA · 18,261 servedActive
- NORTH CHICAGONORTH CHICAGO · 16,813 servedActive
- NORTH CITYCOELLO · 772 servedActive
- NORTH EAST CENTRAL PWDEDWARDSVILLE · 3,975 servedActive
- NORTH EAST MARION COUNTY WATER CMPNYSALEM · 3,220 servedActive
- NORTH EASTERN AVENORTH EASTERN AVE · 25 servedInactive
- NORTH FORK WELL ASSNBLOUNT TWP · 25 servedInactive
- NORTH GATE ESTATES INC MHPNORTH GATE ESTATES INC MHP · 25 servedInactive
- NORTH GLENVIEW MHPNORTH GLENVIEW MHP · 25 servedInactive
- NORTH GLENVIEW MHPGLENVIEW · 150 servedInactive
- NORTH HAZELWOOD SBDVGENESEO · 100 servedActive
- NORTH HENDERSONNORTH HENDERSON · 172 servedActive
- NORTH LAKE SBDVASTORIA TWP · 25 servedInactive
- NORTH MEADOW VILLAGE MHPNORMAL · 495 servedActive
- NORTH MORGAN WATER COOPJACKSONVILLE · 2,763 servedActive
- NORTH PARK PWDMACHESNEY PARK · 35,580 servedActive
- NORTH PEKINNORTH PEKIN · 1,478 servedActive
- NORTH REGIONAL WATER FACDARIEN · 770 servedActive
- NORTH RIVERSIDENORTH RIVERSIDE · 7,071 servedActive
- NORTH TAZEWELL PWDEAST PEORIA · 8,300 servedActive
- NORTH UTICAUTICA · 1,323 servedActive
- NORTHBROOKNORTHBROOK · 34,407 servedActive
- NORTHBROOK MHCSPFLD · 220 servedActive
- NORTHEAST HARTMAN SUBDIVISIONNORTHEAST HARTMAN SUBDIVISION · 25 servedInactive
- NORTHEAST MOUNT VERNON WATER COMPANYMT VERNON · 5,483 servedActive
- NORTHERN BREESE WATER ASSOCIATIONBREESE · 92 servedInactive
- NORTHERN ILLINOIS UNIVERSITY-DEKALBDEKALB · 6,500 servedActive
- NORTHFIELDNORTHFIELD · 5,470 servedActive
- NORTHFIELD MHPNORTHFIELD MHP · 25 servedInactive
- NORTHGATE ESTATES MHPROCKFORD · 100 servedActive
- NORTHLAKENORTH LAKE · 12,840 servedActive
- NORTHSIDE PETERSON WLFNDBLOOMINGDALE TWP · 25 servedInactive
- NORTHWEST BELMONT IMPROVEMENT ASSOCIATIODOWNERS GROVE · 75 servedInactive
- NORTHWEST SUBURBAN MUNICIPAL JAWAELK GROVE VILLAGE · 1 servedActive
- NORTHWEST WATER ASSOCIATION OF RUSHVILLERUSHVILLE · 71 servedInactive
- NORTHWEST WATER COMMISSIONDES PLAINES · 1 servedActive
- NORTHWOOD & ISLAND LANE ASSNNORTHWOOD & ISLAND LANE ASSN · 25 servedInactive
- NORTHWOOD & ISLAND LN WTR ASSNUNSPEC PL IN CO · 75 servedInactive
- NUTWOOD WATER DISTRICTFIELDON · 87 servedInactive
- O FALLONO'FALLON · 46,603 servedActive
- O'HARE AIR RSRV FORCES FCLTYMAINE TWP · 1,500 servedInactive
- OAK BROOKOAK BROOK · 9,400 servedActive
- OAK FORESTOAK FOREST · 27,478 servedActive
- OAK FOREST HEALTH CENTERCHICAGO · 1,500 servedInactive
- OAK GLEN NURSING HOMECOAL VALLEY · 0 servedInactive
- OAK GROVE MHPAURORA TWP · 230 servedInactive
- OAK GROVE MHPOTEGO TWP · 55 servedInactive
- OAK GROVE MHP - MADISON COUNTYFARMINGTON HILLS · 138 servedActive
- OAK GROVE MHP - ROCK ISLAND COUNTYBETTENDORF · 138 servedActive
- OAK GROVE VILLAGEFARMINGTON HILLS · 362 servedActive
- OAK HILLOAK HILL · 25 servedInactive
- OAK HILL ESTATESOAK HILL ESTATES · 25 servedInactive
- OAK HILL ESTATESOAK HILL ESTATES · 25 servedInactive
- OAK HILL WELLOAK HILL WELL · 25 servedInactive
- OAK LANE ACRES SUBDIVISIONMORTON · 120 servedActive
- OAK LANE MHCDENVER · 388 servedActive
- OAK LANE MHPOAK LANE MHP · 25 servedInactive
- OAK LAWNOAK LAWN · 58,362 servedActive
- OAK LAWN MHPPOPLAR GROVE · 450 servedActive
- OAK PARKOAK PARK · 54,583 servedActive
- OAK PARK ESTATESPERU · 185 servedActive
- OAK RIDGE MHPMANTENO · 75 servedInactive
- OAK RIDGE SANITARY DISTRICTMETAMORA · 300 servedActive
- OAK VIEW ESTATESCOAL VALLEY · 95 servedActive
- OAKBROOK ESTATES MHPNORTHBROOK · 1,012 servedActive
- OAKBROOK TERRACEOAKBROOK TERRACE · 1,440 servedActive
- OAKDALE ACRES SBDVLIMESTONE TWP · 313 servedInactive
- OAKFORDOAKFORD · 234 servedActive
- OAKHAVEN SBDVMORTON TWP · 26 servedInactive
- OAKLANDOAKLAND · 739 servedActive
- OAKLANE SBDVOTTAWA · 63 servedActive
- OAKRIDGE SUBDIVISIONOAKRIDGE SUBDIVISION · 25 servedInactive
- OAKWOOD ESTATESSPRINGFIELD · 420 servedActive
- OAKWOOD PLACE SUBDIVISIONCOAL VALLEY · 40 servedInactive
- OAKWOOD WEST SUBDIVISIONCOAL VALLEY · 57 servedActive
- OASIS MHPNORMAL · 25 servedInactive
- OASIS MHPNORTHBROOK · 3,000 servedActive
- OBLONGOBLONG · 2,321 servedActive
- ODELLODELL · 1,014 servedActive
- ODINODIN · 2,543 servedActive
- OGDENOGDEN · 750 servedActive
- OGDEN GARDENS MIDDLEEASTOGDEN GARDENS MIDDLEEAST · 25 servedInactive
- OGDEN GARDENS SUBDIVISIONAURORA · 420 servedActive
- OGLE COUNTY HILL HAVEN MOGLE COUNTY HILL HAVEN M · 40 servedInactive
- OGLESBYOGLESBY · 4,500 servedActive
- OHIOOHIO · 465 servedActive
- OKAWVILLEOKAWVILLE · 1,521 servedActive
- OLD DUQUOIN PWDMARION · 785 servedInactive
- OLD HICKORY WTR ASSNHUDSON TWP · 230 servedInactive
- OLD MAZON MHPMAZON TWP · 25 servedInactive
- OLD SALEM CHAUTAUQUAPETERSBURG · 128 servedActive
- OLD SHAWNEETOWNSHAWNEETOWN · 195 servedActive
- OLIVET NAZARENE UNIVERSITYBOURBONNAIS · 1,050 servedInactive
- OLIVET PWDGEORGETOWN · 300 servedActive
- OLMSTEDOLMSTED · 435 servedActive
- OLNEYOLNEY · 8,877 servedActive
- OLYMPIA FIELDSOLYMPIA FIELDS · 4,922 servedActive
- OLYMPIA FIELDS COUNTRY CLUBOLYMPIA FIELDS · 61 servedInactive
- OMAHAOMAHA · 234 servedActive
- ONARGAONARGA · 1,409 servedActive
- ONE LAND MARK PLAZAUNSPEC PL IN CO · 25 servedInactive
- ONEIDAONEIDA · 644 servedActive
- OPHIEM PWSALPHA · 110 servedActive
- OPPY SUBDIVISIONOPPY SUBDIVISION · 25 servedInactive
- OQUAWKAOQUAWKA · 1,125 servedActive
- ORANGEVILLEORANGEVILLE · 780 servedActive
- ORAVILLE WATER DISTRICTAVA · 1,108 servedActive
- ORCHARD VIEW REHAB & HEALTH CARE CENTERPRINCETON · 237 servedInactive
- OREANAFORSYTH · 892 servedActive
- OREGONOREGON · 3,449 servedActive
- ORIENTORIENT · 362 servedActive
- ORIONORION · 1,754 servedActive
- ORLAND HILL SBDVORLAND TWP · 140 servedInactive
- ORLAND PARKORLAND PARK · 58,020 servedActive
- OSCO MUTUAL WATER SUPPLY COMPANY, INC.OSCO · 80 servedActive
- OSWEGOOSWEGO · 38,169 servedActive
- OTHO WILLIAMS RANCHOTHO WILLIAMS RANCH · 25 servedInactive
- OTTAWAOTTAWA · 18,097 servedActive
- OTTAWA ESTATES MHP (FORMERLY DATTIS MHP)LAKE FOREST · 70 servedActive
- OTTER CREEK LAKE UTILITIES DISTRICTDAVIS · 2,342 servedActive
- OTTER CREEK WATER RECLAIMATION DISTRICTBURR RIDGE · 5,025 servedInactive
- OTTER LAKE WATER COMMISSIONVIRDEN · 1,318 servedActive
- OWANECOOWANECO · 245 servedInactive
- OWENS APTSOWENS APTS · 25 servedInactive
- OXBOW-WESTRIDGE WTR DSTRCT SYSROAD DIST 53 · 161 servedInactive
- PALATINEPALATINE · 70,875 servedActive
- PALM GARDENS MHPQUINCY · 1 servedInactive
- PALMERPALMER · 250 servedActive
- PALMYRAPALMYRA · 605 servedActive
- PALMYRA GRANGE HALLPALMYRA GRANGE HALL · 25 servedInactive
- PALMYRA-MODESTO WATER COMMISSIONMODESTO · 110 servedActive
- PALOS HEIGHTSPALOS HEIGHTS · 15,500 servedActive
- PALOS HILLSPALOS HILLS · 18,530 servedActive
- PALOS PARKPALOS PARK · 4,873 servedActive
- PALOS PARK (WTR ASSN)PALOS PARK (WTR ASSN) · 160 servedInactive
- PALOS PARK BROOKSIDE SPALOS PARK BROOKSIDE S · 40 servedInactive
- PALOS PARK THE COMMONSPALOS PARK THE COMMONS · 350 servedInactive
- PANAPANA · 5,800 servedActive
- PANAMAAVISTON · 343 servedActive
- PAPINEAUPAPINEAU · 25 servedInactive
- PARADISE LANEPARADISE LANE · 25 servedInactive
- PARADISE LANE MHPRIVERSIDE TWP · 97 servedInactive
- PARADISE MANOR MHPPERU · 200 servedActive
- PARADISE MHPPHOENIX · 460 servedActive
- PARADISE TRAILER PARKPARADISE TRAILER PARK · 25 servedInactive
- PARISPARIS · 9,100 servedActive
- PARK CITYPARK CITY · 5,425 servedActive
- PARK CITY MHPPARK CITY · 2,460 servedActive
- PARK CREST WTR CMPNYHARLEM TWP · 1,100 servedInactive
- PARK FORESTPARK FOREST · 21,687 servedActive
- PARK HILL ESTATES WATER CO #1PARK HILL ESTATES WATER CO #1 · 25 servedInactive
- PARK HILL ESTATES WATER CO #3PARK HILL ESTATES WATER CO #3 · 25 servedInactive
- PARK HILL ESTS WELL 1BLACKHAWK TWP · 25 servedInactive
- PARK HILL ESTS WELL 2BLACKHAWK TWP · 25 servedInactive
- PARK MEADOWLAND WEST MHPGARDEN CITY · 100 servedActive
- PARK RIDGEPARK RIDGE · 39,800 servedActive
- PARK RIDGE MHCSARASOTA · 116 servedActive
- PARK ROAD WATER ASSOCIATIONJOLIET · 30 servedInactive
- PARK VIEW WATER CORPORATIONAURORA · 150 servedInactive
- PARKBROOK LANEPARKBROOK LANE · 25 servedInactive
- PARKBROOK LANEPARKBROOK LANE · 25 servedInactive
- PARKBROOK LANE LOT 34 WELLSOUTH MOLINE TWP · 32 servedInactive
- PARKERSBURGPARKERSBURG · 356 servedActive
- PARKSIDE HILLPARKSIDE HILL · 25 servedInactive
- PARKVIEW MHPNEW LENOX TWP · 32 servedInactive
- PARKVIEW MHPO FALLON TWP · 35 servedInactive
- PATCH PLACE MHCSPRINGFIELD · 47 servedActive
- PATOKAPATOKA · 603 servedActive
- PATRIOTS LANDINGUNSPEC PL IN CO · 1,700 servedInactive
- PATTERSON (INC AS WILMINGTON)PATTERSON · 320 servedActive
- PATTERSON MHPAURORA · 24 servedInactive
- PAUL JAMES MHPPAUL JAMES MHP · 25 servedInactive
- PAULS MHPPERU · 38 servedActive
- PAW PAWPAW PAW · 830 servedActive
- PAWNEEPAWNEE · 2,739 servedActive
- PAXTONPAXTON · 4,200 servedActive
- PAYSONPAYSON · 1,386 servedActive
- PEARLNEBO · 166 servedActive
- PEARL CITYPEARL CITY · 790 servedActive
- PECATONICAPECATONICA · 2,195 servedActive
- PEKIN FED CORRECTIONAL INST AND PRSNCMPPEKIN · 1,635 servedActive
- PEMBROKE TOWNSHIPHOPKINS PARK · 1,410 servedActive
- PENFIELD PWDPENFIELD · 150 servedActive
- PEORIA CO GIDEONSEN MHPPEORIA · 146 servedInactive
- PEORIA HEIGHTSPEORIA HEIGHTS · 5,908 servedActive
- PERCYPERCY · 961 servedActive
- PERE MARQUETTE STATE PARKGRAFTON · 25 servedInactive
- PERRYPERRY · 388 servedActive
- PERUPERU · 10,300 servedActive
- PESOTUMPESOTUM · 0 servedInactive
- PETERSBURGPETERSBURG · 4,725 servedActive
- PETROLIA PWDBRIDGEPORT · 1,275 servedActive
- PHEASANT KNOLLS SBDVELA TWP · 130 servedInactive
- PHEASANT LAKE ESTATES MHPBEECHER · 1,528 servedActive
- PHEASANT RUN MHPCOLDWATER · 350 servedActive
- PHIL-AIRE ESTATES MHPROCKTON · 80 servedActive
- PHOENIXPHOENIX · 1,994 servedActive
- PIATT COUNTY NURSING HOMEMONTICELLO · 93 servedActive
- PIERRONPIERRON · 1,709 servedActive
- PIKE COUNTY PWD 1PITTSFIELD · 5,375 servedActive
- PINCKNEYVILLEPINCKNEYVILLE · 5,804 servedActive
- PINCKNEYVILLE CORRECTIONAL CENTERPINCKNEYVILLE · 2,470 servedActive
- PINE RIDGE UTL INCGENESEO TWP · 25 servedInactive
- PINE SHORE APARTMENTSCARBONDALE · 100 servedInactive
- PINE VIEW APARTMENTSGLENVIEW · 36 servedInactive
- PINELANDS SUBDIVISIONPINELANDS SUBDIVISION · 25 servedInactive
- PINEWOOD ESTATES MHPMEDINA TWP · 450 servedInactive
- PINGREE GROVEPINGREE GROVE · 10,365 servedActive
- PIPER CITYPIPER CITY · 875 servedActive
- PITTSBURGPITTSBURG · 2,948 servedActive
- PITTSFIELDPITTSFIELD · 4,697 servedActive
- PLAINFIELDPLAINFIELD · 50,000 servedActive
- PLAINVILLEBARRY · 264 servedActive
- PLANOPLANO · 12,600 servedActive
- PLEASANT GROVE WATER SUPPLY CORPORATIONBUNCOMBE · 91 servedInactive
- PLEASANT HILLPLEASANT HILL · 1,004 servedActive
- PLEASANT HILL RDPLEASANT HILL RD · 25 servedInactive
- PLEASANT MEADOWS NURSING HOMEPLEASANT MEADOWS NURSING HOME · 25 servedInactive
- PLEASANT PLAINSPLEASANT PLAINS · 1,508 servedActive
- PLEASANT PLAINS MHPPALESTINE · 42 servedInactive
- PLEASANT RIDGE MHPCHICAGO · 284 servedActive
- PLEASANT VALLEY PWDPEORIA · 3,783 servedActive
- PLEASANT VIEW MHPPLEASANT VIEW MHP · 25 servedInactive
- PLUM CREEK CONDOSWHEELING · 570 servedInactive
- PLUM GROVE CONDOSLIBERTYVILLE · 250 servedInactive
- PLUMFIELD WATER DISTRICTWEST FRANKFORT · 460 servedActive
- PLYMOUTHPLYMOUTH · 460 servedActive
- POCAHONTASAVISTON · 697 servedActive
- POLOPOLO · 2,355 servedActive
- POLO DR AND SADDLE RD SUBDIVISIONWHEATON · 93 servedActive
- PONTIAC CORRECTIONAL CENTERPONTIAC · 1,665 servedActive
- PONTOON BAPTIST CHURCHNAMEOKI TWP · 30 servedInactive
- PONTOON BEACH PWDGRANITE CITY · 3,325 servedActive
- POOR CLARES MONASTERYPALOS PARK · 6 servedInactive
- POPLAR GROVEPOPLAR GROVE · 2,372 servedActive
- POPLAR GROVE OAKLAWN MHPPOPLAR GROVE OAKLAWN MHP · 25 servedInactive
- POPLAR GROVE SOUTHPOPLAR GROVE · 1,877 servedActive
- POPLAR GROVE WEST-COUNTRYSIDEPOPLAR GROVE · 790 servedActive
- PORT BYRONPORT BYRON · 1,678 servedActive
- PORT OF CALLUNSPEC PL IN CO · 485 servedInactive
- PORTS SULLIVAN LAKE OWNERS ASSOCIATIONLAKEMOOR · 293 servedActive
- POSENPOSEN · 5,331 servedActive
- POSSUM BRANCH WTR ASSOCIATIONPINCKNEYVILLE · 182 servedInactive
- POTOMACPOTOMAC · 685 servedActive
- POWERS WATER CO, INC.FOX RIVER GROVE · 216 servedActive
- PRAIRIE CITYPRAIRIE CITY · 425 servedActive
- PRAIRIE DU ROCHERPRAIRIE DU ROCHER · 759 servedActive
- PRAIRIE DUPONT PWDEAST CARONDELET · 1,863 servedActive
- PRAIRIE KNOLLS SUBDIVISION0 servedInactive
- PRAIRIE OAKS ESTS HOMEOWNERS ASSNCOAL CITY · 107 servedActive
- PRAIRIE PATH -PORT BARRINGTON SHORESMCHENRY · 67 servedActive
- PRAIRIE PATH WATER CO-COVENTRY CREEKMCHENRY · 270 servedActive
- PRAIRIE PATH WATER CO-WHISPERING HILLSMCHENRY · 8,300 servedActive
- PRAIRIE PATH WATER COMPANY-APPLE CANYONGALENA · 931 servedActive
- PRAIRIE PATH WATER COMPANY-CAMELOTST. CHARLES · 777 servedActive
- PRAIRIE PATH WATER COMPANY-CEDAR WATEROAKWOOD · 172 servedActive
- PRAIRIE PATH WATER COMPANY-CHAR-MARMCHENRY · 186 servedActive
- PRAIRIE PATH WATER COMPANY-CHERRY HILLST. CHARLES · 833 servedActive
- PRAIRIE PATH WATER COMPANY-CLARENDONST. CHARLES · 850 servedActive
- PRAIRIE PATH WATER COMPANY-COVENTRY HILLMCHENRY · 608 servedActive
- PRAIRIE PATH WATER COMPANY-DEL-MARMCHENRY · 300 servedActive
- PRAIRIE PATH WATER COMPANY-FERSON CREEKST. CHARLES · 1,134 servedActive
- PRAIRIE PATH WATER COMPANY-GALENAGALENA · 2,294 servedActive
- PRAIRIE PATH WATER COMPANY-HARBOR RIDGEMCHENRY · 1,064 servedActive
- PRAIRIE PATH WATER COMPANY-HOLIDAY HILLSMCHENRY · 868 servedActive
- PRAIRIE PATH WATER COMPANY-KILLARNEYMCHENRY · 1,232 servedActive
- PRAIRIE PATH WATER COMPANY-LAKE HOLIDAYST. CHARLES · 4,750 servedActive
- PRAIRIE PATH WATER COMPANY-LAKE MARIANMCHENRY · 1,022 servedActive
- PRAIRIE PATH WATER COMPANY-LAKE WILDWOODOAKWOOD · 1,295 servedActive
- PRAIRIE PATH WATER COMPANY-NORTHERN HILLMCHENRY · 600 servedActive
- PRAIRIE PATH WATER COMPANY-OAKWOODMCHENRY · 1,600 servedActive
- PRAIRIE PATH WATER COMPANY-ROCKVALEMCHENRY · 298 servedActive
- PRAIRIE PATH WATER COMPANY-VALENTINEMCHENRY · 252 servedActive
- PRAIRIE PATH WATER COMPANY-WALK UP WOODSMCHENRY · 775 servedActive
- PRAIRIE PATH WATER COMPANY-WESTLAKEMCHENRY · 1,493 servedActive
- PRAIRIE PATH WATER COMPANY-WILDWOODMCHENRY · 490 servedActive
- PRAIRIE PATH WATER-BAHL WATER COMPANYGALENA · 700 servedActive
- PRAIRIE RIDGE ASSOCIATIONSCHAUMBURG · 148 servedActive
- PRAIRIE ROAD PUMP CORPORATIONROCKFORD · 150 servedActive
- PRAIRIE TRAILS OF LONG GROVELONG GROVE · 189 servedActive
- PRAIRIE VIEW ACRES MHPTUSCOLA TWP · 25 servedInactive
- PRAIRIE VIEW WATER ASSOCIATIONWASHINGTON · 21 servedInactive
- PRAIRIETOWN RD WTR ASSNDORCHESTER TWP · 135 servedInactive
- PRAIRIEVIEW LUTHERAN HOMEDANFORTH · 113 servedActive
- PRICE MHPHAMPTON TWP · 75 servedInactive
- PRICE'S BREEZY ACRESPRICE'S BREEZY ACRES · 25 servedInactive
- PRINCETONPRINCETON · 7,832 servedActive
- PRINCEVILLEPRINCEVILLE · 1,901 servedActive
- PROMONTORY POINTE HOMEOWNERS ASSOCIATIONLAKE ZURICH · 78 servedActive
- PROPHETSTOWNPROPHETSTOWN · 2,100 servedActive
- PROSPECT HEIGHTSPROSPECT HEIGHTS · 2,280 servedActive
- PROSPECT WATER DISTRICTHARRISBURG · 1,140 servedActive
- PROVIDENCE AT PAINTED LAKESLAKE VILLA · 1,650 servedInactive
- PULASKIPULASKI · 202 servedActive
- PUTNAM WTR ASSNSENACHWINE TWP · 35 servedInactive
- QUAD-CITY AIRPORTCOAL VALLEY TWP · 50 servedInactive
- QUAIL RUN MOBILE HOME PARKEDWARDSVILLE · 168 servedActive
- QUAIL RUN SUBDIVISIONQUAIL RUN SUBDIVISION · 25 servedInactive
- QUAIL RUN WELL ASSNBLACKHAWK TWP · 28 servedInactive
- QUANTUM CHEM CORP-USI DVNGARRETT TWP · 1,175 servedInactive
- QUINCYQUINCY · 42,000 servedActive
- RACCOON WATER COMPANYCENTRALIA · 7,080 servedActive
- RADOMNASHVILLE · 193 servedActive
- RAINBOW LANE MHPROCKFORD · 83 servedActive
- RAINBOW RIDGEMILAN · 91 servedActive
- RALEIGH WATER DISTRICTRALEIGH · 605 servedActive
- RAMSEYRAMSEY · 966 servedActive
- RAND ESTS SBDVLAKE ZURICH · 78 servedInactive
- RANGELAND PARK MHPO FALLON TWP · 55 servedInactive
- RANKINRANKIN · 500 servedActive
- RANTOULRANTOUL · 13,000 servedActive
- RAPIDS CITYRAPIDS CITY · 962 servedActive
- RARITANRARITAN · 180 servedActive
- RAY ANDERSONRAY ANDERSON · 25 servedInactive
- RAYMONDRAYMOND · 974 servedActive
- RE WATER CORPORATIONDIETERICH · 1,513 servedInactive
- RECOVERY CENTERS OF AMERICAST. CHARLES · 130 servedActive
- RED BUDRED BUD · 3,804 servedActive
- REDDICKPERU · 196 servedActive
- REDMONREDMON · 199 servedInactive
- REMOLE SBDVDANVILLE TWP · 95 servedInactive
- REND CITY PWDUNSPEC PL IN CO · 61 servedInactive
- REND LAKE INTER-CITY WATER SYSTEMBENTON · 3,650 servedActive
- REND LAKE MOBILE HOME PARKFORT MILL · 65 servedActive
- RETZ ADDN IMPROVEMENT ASSOCIATIONOTTAWA · 168 servedActive
- REUL'S MHPREUL'S MHP · 25 servedInactive
- REYNOLDSREYNOLDS · 508 servedActive
- RICHARD'S APTSRICHARD'S APTS · 25 servedInactive
- RICHARD'S APTSRICHARD'S APTS · 25 servedInactive
- RICHMONDRICHMOND · 2,089 servedActive
- RICHTON PARKRICHTON PARK · 12,504 servedActive
- RICHVIEWRICHVIEW · 251 servedActive
- RICHWOOD MANOR MHPUNSPEC PL IN CO · 120 servedInactive
- RIDGE FARMRIDGE FARM · 973 servedActive
- RIDGE VILLAGE MHPSPRINGFIELD · 120 servedActive
- RIDGECREST NORTH SUBDIVISIONMORRIS · 60 servedActive
- RIDGEVIEW MHPCLINTON · 40 servedInactive
- RIDGEWOOD LEDGES WATER ASSOCIATIONMILAN · 300 servedActive
- RIDGEWOOD SUBDIVISIONJOLIET · 250 servedInactive
- RIDGWAYRIDGWAY · 874 servedActive
- RINGO MHPRINGO MHP · 25 servedInactive
- RIORIO · 265 servedActive
- RIPLEYRIPLEY · 250 servedActive
- RIVER CREST MHPRIVER CREST MHP · 25 servedInactive
- RIVER EAST VILLAGE MHPVERNON HILLS · 65 servedActive
- RIVER FORESTRIVER FOREST · 11,717 servedActive
- RIVER GROVERIVER GROVE · 10,282 servedActive
- RIVER OAKS ESTATES MHPBLOOMFIELD HILLS · 677 servedActive
- RIVER OAKS MHPSPRINGFIELD · 0 servedInactive
- RIVER ROAD MHPFREEPORT · 1 servedInactive
- RIVER ROAD MHPRIVER ROAD MHP · 25 servedInactive
- RIVERCREST MHPCHEBANSE · 17 servedInactive
- RIVERDALERIVERDALE · 10,266 servedActive
- RIVERSIDERIVERSIDE · 9,298 servedActive
- RIVERSIDE ESTATES MHPCOLORADO SPRINGS · 120 servedActive
- RIVERSIDE MHPWILMINGTON TWP · 25 servedInactive
- RIVERTONRIVERTON · 4,279 servedActive
- RIVERVIEW MHP (HENRY COUNTY)GENESEO · 21 servedInactive
- RIVERVIEW MHP (WINNEBAG0)ROCKFORD · 214 servedInactive
- RIVERWOODSVERNON HILLS · 3,618 servedActive
- RIVERWOODS SPECIAL SERVICE DISTRICT 3RIVERWOODS · 234 servedInactive
- RIVERWOODS-SPCL SRVC DSTRCT 17RIVERWOODS · 45 servedInactive
- ROANOKEROANOKE · 2,000 servedActive
- ROBBINSROBBINS · 5,415 servedActive
- ROBERT ORWIGROBERT ORWIG · 25 servedInactive
- ROBERT RUDEROBERT RUDE · 25 servedInactive
- ROBERTSROBERTS · 367 servedActive
- ROBIN HOOD WOODSROBIN HOOD WOODS · 25 servedInactive
- ROBINSON CORRECTIONAL CENTERDIETERICH · 1,085 servedActive
- ROBINSON-PALESTINE WATER COMMISSIONROBINSON · 11,331 servedActive
- ROCCO MULETTO APT COMPLEXROCCO MULETTO APT COMPLEX · 25 servedInactive
- ROCHELLEROCHELLE · 9,446 servedActive
- ROCHESTERROCHESTER · 3,856 servedActive
- ROCK CITYROCK CITY · 313 servedActive
- ROCK CUT MHPROCK CUT MHP · 25 servedInactive
- ROCK FALLSROCK FALLS · 8,620 servedActive
- ROCK ISLANDROCK ISLAND · 39,018 servedActive
- ROCK ISLAND ARSENAL, US ARMYROCK ISLAND · 7,800 servedActive
- ROCK ISLAND CO BLKHWK VILL28 servedInactive
- ROCK ISLAND CO CREST VIEW DR 132 servedInactive
- ROCK ISLAND CO CREST VIEW DR 232 servedInactive
- ROCK ISLAND CO FORREST VIEW 132 servedInactive
- ROCK ISLAND CO FORREST VIEW 232 servedInactive
- ROCK ISLAND CO INDIAN BLFS 132 servedInactive
- ROCK ISLAND CO INDIAN BLFS 232 servedInactive
- ROCK ISLAND CO MERRY OAKS 3 W632 servedInactive
- ROCK ISLAND CO RIVER EST 1ST32 servedInactive
- ROCK ISLAND COUNTY BALCEAN 3RDROCK ISLAND COUNTY BALCEAN 3RD · 28 servedInactive
- ROCK ISLAND COUNTY BLACKHAWK AROCK ISLAND COUNTY BLACKHAWK A · 32 servedInactive
- ROCK ISLAND COUNTY BLACKHAWK WROCK ISLAND COUNTY BLACKHAWK W · 32 servedInactive
- ROCK ISLAND COUNTY M.F.&B. WELROCK ISLAND COUNTY M.F.&B. WEL · 60 servedInactive
- ROCK ISLAND COUNTY MILL CREEKROCK ISLAND COUNTY MILL CREEK · 28 servedInactive
- ROCK ISLAND COUNTY OAK HEIGHTSROCK ISLAND COUNTY OAK HEIGHTS · 25 servedInactive
- ROCK ISLAND COUNTY PARKBROOK LROCK ISLAND COUNTY PARKBROOK L · 31 servedInactive
- ROCK ISLAND COUNTY RIVER EDGEROCK ISLAND COUNTY RIVER EDGE · 25 servedInactive
- ROCK ISLAND COUNTY TINDALLS 1SROCK ISLAND COUNTY TINDALLS 1S · 32 servedInactive
- ROCK ISLAND COUNTY WITTER'S 1SROCK ISLAND COUNTY WITTER'S 1S · 32 servedInactive
- ROCK RIVER ESTATES MHPDIXON · 400 servedActive
- ROCKBRIDGEROCKBRIDGE · 180 servedActive
- ROCKDALEROCKDALE · 2,012 servedActive
- ROCKFORDROCKFORD · 147,051 servedActive
- ROCKLAND TRAILER PK SALESROCKLAND TRAILER PK SALES · 25 servedInactive
- ROCKTONROCKTON · 7,685 servedActive
- ROCKY HOLLOW WATER DISTRICTBUTLER · 40 servedInactive
- ROGERS MHPCHARLESTON TWP · 25 servedInactive
- ROLLING ACRES MHPBUCKHEART TWP · 25 servedInactive
- ROLLING ACRES SBDVUNSPEC PL IN CO · 25 servedInactive
- ROLLING GREEN ESTATES MHPCHICAGO · 191 servedActive
- ROLLING MEADOWSROLLING MEADOWS · 23,329 servedActive
- ROLLING MEADOWS MHCCLEARWATER · 447 servedActive
- ROLLING MEADOWS MHC (JEFFERSON CO)DESTIN · 218 servedActive
- ROLLING MEADOWS-FOXGLOVECLEARWATER · 70 servedActive
- ROME FARMS #9CHILLICOTHE TWP · 200 servedInactive
- ROMEOVILLEROMEOVILLE · 50,458 servedActive
- ROODHOUSEROODHOUSE · 1,753 servedActive
- ROSEBUD MHPBRIDGEVIEW · 2,250 servedInactive
- ROSELLEROSELLE · 22,897 servedActive
- ROSEMONTROSEMONT · 3,952 servedActive
- ROSEVILLEROSEVILLE · 915 servedActive
- ROSEWOOD TRACE SBDVDOWNERS GR TWP · 5,500 servedInactive
- ROSICLAREBELLEVILLE · 1,387 servedInactive
- ROSING LAKEVIEW WATER ASSOCIATIONANTIOCH · 1 servedInactive
- ROSSVILLEROSSVILLE · 1,331 servedActive
- ROUND LAKEROUND LAKE · 18,430 servedActive
- ROUND LAKE BEACHROUND LAKE BEACH · 27,200 servedActive
- ROUND LAKE HEIGHTSROUND LAKE HEIGHTS · 2,622 servedActive
- ROUND LAKE PARKROUND LAKE PARK · 4,900 servedActive
- ROUND PRAIRIE WATER COOPDIETERICH · 813 servedActive
- ROXANAROXANA · 1,509 servedActive
- ROYALROYAL · 273 servedActive
- ROYAL LAKE WATER DISTRICTMULBERRY GROVE · 150 servedInactive
- ROYAL LAKESROYAL LAKES · 235 servedActive
- ROYAL MELBOURNE HOMEOWNERS ASNSCHAUMBURG · 382 servedActive
- ROYAL OAKS ESTATESPEORIA · 865 servedInactive
- ROYAL OAKS MHPCHICAGO · 170 servedActive
- ROYALTONROYALTON · 1,118 servedActive
- RR1-IL WTR ASSNSTAUNTON TWP · 87 servedInactive
- RUMARUMA · 341 servedActive
- RURAL WABASH COUNTY WATER DISTRICTLANCASTER · 1,877 servedActive
- RUSHVILLEEAST PEORIA · 3,375 servedActive
- RUSK HAVEN HOMERUSK HAVEN HOME · 25 servedInactive
- RUSTIC ACRES WATER ASSOCIATIONCOLONA · 260 servedActive
- RUTLANDRUTLAND · 259 servedActive
- RYANS HOMESRYANS HOMES · 25 servedInactive
- S JACKSON ST COMMUNITY WELLS JACKSON ST COMMUNITY WELL · 25 servedInactive
- S L M WATER COMMISSIONMASCOUTAH · 385 servedActive
- SADDLEBROOK ESTATES SUBDIVISIONWASHINGTON · 62 servedInactive
- SADDLEBROOK FARMSGRAYSLAKE · 2,558 servedActive
- SAFARI CAMPGROUNDSSAFARI CAMPGROUNDS · 25 servedInactive
- SAILOR SPRINGS (EJ WTR CORP)SAILOR SPRINGS · 136 servedInactive
- SAINTE MARIEDIETERICH · 243 servedActive
- SALEMSALEM · 7,905 servedActive
- SALEM CHILDRENS HMNEBRASKA TWP · 44 servedInactive
- SALEM CHILDRENS HOMESALEM CHILDRENS HOME · 25 servedInactive
- SALINE VALLEY CONSERVANCY DISTRICTELDORADO · 3,921 servedActive
- SAN JOSESAN JOSE · 479 servedActive
- SANDOVALSANDOVAL · 1,528 servedActive
- SANDWICHSANDWICH · 7,156 servedActive
- SANDWICH DUN-ROVIN MHPSANDWICH DUN-ROVIN MHP · 25 servedInactive
- SANDWICH ESTATES MHPCHICAGO · 90 servedActive
- SANDWICH MHPSANDWICH MHP · 25 servedInactive
- SANGAMON VALLEY PWDMAHOMET · 5,300 servedActive
- SANTA FE ESTATES WATER ASSOCIATIONCHILLICOTHE · 68 servedActive
- SANTA FE MNPLYONS TWP · 88 servedInactive
- SANTA FE RANCHSANTA FE RANCH · 25 servedInactive
- SAUKSAUK VILLAGE · 9,921 servedActive
- SAUK VALLEY STUDENT HOUSINGDIXON · 75 servedInactive
- SAVANNASAVANNA · 3,020 servedActive
- SAVANNA ARMY DEPOTSAVANNA TWP · 25 servedInactive
- SAVE SITEFREEBURG TWP · 400 servedInactive
- SAWYERVILLESAWYERVILLE · 578 servedActive
- SAYBROOKSAYBROOK · 679 servedActive
- SCALES MOUNDSCALES MOUND · 436 servedActive
- SCARBORO ELEVATORSCARBORO ELEVATOR · 25 servedInactive
- SCHAUMBURGSCHAUMBURG · 75,750 servedActive
- SCHILLER PARKSCHILLER PARK · 11,709 servedActive
- SCHMID LAKE SUBDIVISIONSUGAR LOAF TWP · 43 servedInactive
- SCHRAM CITYHILLSBORO · 563 servedActive
- SCHULTZ LOT WATER SYSTEMSCHULTZ LOT WATER SYSTEM · 25 servedInactive
- SCHWERMANNS 2ND AND 3RD WTR BRDMUNDELEIN · 285 servedActive
- SCIOTASCIOTA · 180 servedActive
- SCOTT AFB PROPERTIES LLC3,765 servedInactive
- SCOTT COUNTY RURAL WATER CO-OPWINCHESTER · 493 servedActive
- SCOTTSSCOTTS · 25 servedInactive
- SCOTTS MHPHAVANA TWP · 30 servedInactive
- SCOTTSDALE MHCSPRINGFIELD · 114 servedActive
- SCOTTVILLE RURAL WATER COMPANY, INC.PALMYRA · 695 servedActive
- SCRIBNER STREET SBDVJOLIET TWP · 87 servedInactive
- SEATONMUSCATINE · 214 servedActive
- SEATONVILLESEATONVILLE · 321 servedActive
- SECORSECOR · 351 servedActive
- SEDAM-HEGEMAN ADD WELL #1SEDAM-HEGEMAN ADD WELL #1 · 25 servedInactive
- SEDAM-HEGEMAN ADD WELL #2SEDAM-HEGEMAN ADD WELL #2 · 25 servedInactive
- SEDAMS GOLDEN ACRE WELLSEDAMS GOLDEN ACRE WELL · 25 servedInactive
- SEDGEBROOK DVLPINGREE GROVE · 1,200 servedInactive
- SENECASENECA · 2,353 servedActive
- SENECA MOBILE HOMES LLCMORRIS · 10 servedActive
- SENESAC & SONS MHPBOURBONNAIS TWP · 30 servedInactive
- SESSERSESSER · 2,556 servedActive
- SEYMOUR WATER DISTRICTSEYMOUR · 392 servedActive
- SHABBONASHABBONA · 913 servedActive
- SHADOW LAKES RESORTREED TWP · 1,200 servedInactive
- SHADOW WOOD MHPCHAMPAIGN · 680 servedActive
- SHADY GROVE MHPWEST LINCOLN TWP · 0 servedInactive
- SHADY KNOLL MHPBLOOMINGTON TWP · 25 servedInactive
- SHADY KNOLL MHPSHADY KNOLL MHP · 25 servedInactive
- SHADY LANE MHPSHADY LANE MHP · 25 servedInactive
- SHADY NOOKSTERLING TWP · 25 servedInactive
- SHADY OAKS MHPCHICAGO · 912 servedActive
- SHAMEL MANORSHAMEL MANOR · 25 servedInactive
- SHANGRI-LA MHPBARRINGTON · 475 servedActive
- SHANNONSHANNON · 801 servedActive
- SHARPSBURG AND NEIGHBORING AREA WATER SYSTONINGTON · 868 servedActive
- SHAWNEE CORRECTIONAL CENTERDIETERICH · 1,617 servedActive
- SHAWNEE SHELTER CARESHAWNEE SHELTER CARE · 25 servedInactive
- SHAWNEE VALLEY PWDWOLF LAKE · 738 servedActive
- SHAWNEETOWNSHAWNEETOWN · 1,054 servedActive
- SHAWNITA TRC WATER ASSOCIATIONJOLIET · 135 servedInactive
- SHEFFIELDKEWANEE · 821 servedActive
- SHELBYVILLESHELBYVILLE · 5,600 servedActive
- SHELDONSHELDON · 900 servedActive
- SHERIDAN CORRECTIONAL CENTERSHERIDAN · 1,670 servedActive
- SHERMAN (VILLA VIANNY)30 servedInactive
- SHERRARDSHERRARD · 785 servedActive
- SHILOHSHILOH · 4,000 servedInactive
- SHIPMANSHIPMAN · 541 servedActive
- SHO-DEEN SBDVBLACKBERRY TWP · 11,200 servedInactive
- SHORELINE TERRACE MHPSHORELINE TERRACE MHP · 25 servedInactive
- SHORELINE TRC MHPCHICAGO · 504 servedActive
- SHOREWOODSHOREWOOD · 18,645 servedActive
- SHUMWAYUNSPEC PL IN CO · 278 servedInactive
- SIBLEYSIBLEY · 245 servedActive
- SIDELLSIDELL · 557 servedActive
- SIDNEYSIDNEY · 1,250 servedInactive
- SIGELALTAMONT · 386 servedActive
- SIKKEMA #1 MHPSIKKEMA #1 MHP · 25 servedInactive
- SIKKEMA #2 MHPSIKKEMA #2 MHP · 25 servedInactive
- SILO MHPLYNWOOD · 25 servedInactive
- SILVER GLEN HOMEOWNER'S ASSOCIATIONST. CHARLES · 595 servedActive
- SILVISSILVIS · 7,473 servedActive
- SILVIS HEIGHTS WATER CORPSILVIS · 1,450 servedActive
- SIMSSIMS · 244 servedActive
- SIMS MHPSIMS MHP · 25 servedInactive
- SINGER MHCROCKFORD TWP · 500 servedInactive
- SIU PROPERTIES VIA CARBONDALECARBONDALE TWP · 6,354 servedInactive
- SIU SCH DENTAL MEDICINE-ALTONALTON · 375 servedInactive
- SIX OAKS MHPWHEATON · 48 servedActive
- SKOKIESKOKIE · 66,422 servedActive
- SKYVIEW ESTATESMOMENCE · 56 servedActive
- SLEEPY HOLLOWSLEEPY HOLLOW · 3,100 servedActive
- SLEEPY HOLLOW WATER CORPSLEEPY HOLLOW WATER CORP · 1,543 servedInactive
- SMG - LYNNVILLEWINCHESTER · 130 servedActive
- SMG WATER COOPWINCHESTER · 3,110 servedActive
- SMITHBOROSMITHBORO · 188 servedActive
- SMITHFIELDSMITHFIELD · 375 servedActive
- SMITHTONSMITHTON · 4,006 servedActive
- SNAKE TRAIL WTR ASSNTEUTOPOLIS · 120 servedActive
- SOMONAUKSOMONAUK · 1,860 servedActive
- SORENTOAVISTON · 429 servedActive
- SOUTH BARRINGTONGENEVA · 1,175 servedActive
- SOUTH BLUFF MHPSANDY · 507 servedActive
- SOUTH BURDETTE WTRBLOOMINGDALE TWP · 25 servedInactive
- SOUTH CHICAGO HEIGHTSSOUTH CHICAGO HEIGHTS · 3,924 servedActive
- SOUTH CRIPPLE CREEK WTR ASSNROAD DIST 53 · 99 servedInactive
- SOUTH DALE SUBDIVISIONSOUTH DALE SUBDIVISION · 25 servedInactive
- SOUTH ELGINSOUTH ELGIN · 23,648 servedActive
- SOUTH FULTON WATER DISTRICTASTORIA · 1,430 servedActive
- SOUTH GROVE SBDVDOWNERS GR TWP · 40 servedInactive
- SOUTH HIGHWAY PWDMAKANDA · 4,972 servedActive
- SOUTH HOLLANDSOUTH HOLLAND · 22,000 servedActive
- SOUTH JACKSONVILLESOUTH JACKSONVILLE · 3,508 servedActive
- SOUTH LAWRENCE WATER CORPSUMNER · 1,195 servedActive
- SOUTH PALMYRA WATER COMMISSIONPALMYRA · 838 servedActive
- SOUTH PALOS TWSP SANITARY DISTPALOS PARK · 2,800 servedActive
- SOUTH PEKINSOUTH PEKIN · 996 servedActive
- SOUTH RIDGE MHCJOLIET · 96 servedActive
- SOUTH ROXANASOUTH ROXANA · 1,891 servedActive
- SOUTH SANGAMON WATER COMMISSIONROCHESTER · 134 servedActive
- SOUTH STICKNY SDBURBANK · 30,000 servedActive
- SOUTH WELL 16BLACKHAWK TWP · 32 servedInactive
- SOUTH WILMINGTONSOUTH WILMINGTON · 700 servedActive
- SOUTHEAST JOLIET SDJOLIET · 2,000 servedActive
- SOUTHEAST REGIONAL WATER FACILITYDARIEN · 6,940 servedActive
- SOUTHEASTERN ILLINOIS COLLEGE25 servedInactive
- SOUTHERN IL UNIVERSITY-EDWARDSVILLEEDWARDSVILLE · 2,817 servedActive
- SOUTHGATE ESTATES MHC996 servedInactive
- SOUTHLAND MHPMELROSE TWP · 36 servedInactive
- SOUTHWATER INCTAMMS · 2,185 servedActive
- SOUTHWESTERN IL CORRECTIONAL CENTEREAST ST. LOUIS · 563 servedActive
- SOUTHWIND MOBILE ESTATESKEWANEE · 200 servedInactive
- SPARLANDSPARLAND · 358 servedActive
- SPARTASPARTA · 4,395 servedActive
- SPENCE MORRISSPENCE MORRIS · 25 servedInactive
- SPIN LAKE HOMEOWNERS ASSOCIATION, INC.DANVERS · 200 servedActive
- SPOON RIVER COLLEGE25 servedInactive
- SPRING ACRESSPRING ACRES · 25 servedInactive
- SPRING BLUFF SBDVUNSPEC PL IN CO · 25 servedInactive
- SPRING CREEK WTR ASSNCAHOKIA TWP · 72 servedInactive
- SPRING LAKE CNTRYCLBRIVERSIDE TWP · 75 servedInactive
- SPRING LAKES MHPELGIN · 904 servedActive
- SPRING VALLEYSPRING VALLEY · 5,582 servedActive
- SPRING VALLEY MHPSHILOH VAL TWP · 40 servedInactive
- SPRINGCREEK CAMPGROUND,II, INCDANFORTH TWP · 34 servedInactive
- SPRINGERTONSPRINGERTON · 176 servedActive
- SPRINGFIELDSPRINGFIELD · 117,444 servedActive
- SRY MHPSRY MHP · 25 servedInactive
- ST ANNEST ANNE · 1,200 servedActive
- ST AUGUSTINEMONMOUTH · 119 servedActive
- ST CHARLESST. CHARLES · 33,103 servedActive
- ST CHARLES CMNTY WLFND 2BLOOMINGDALE TWP · 30 servedInactive
- ST CHARLES COMMSSION WELLFUND 3CAROL STREAM · 24 servedInactive
- ST CHARLES COMMUNITY WELL FUNDST CHARLES COMMUNITY WELL FUND · 25 servedInactive
- ST CHARLES COMMUNITY WELL FUNDST CHARLES COMMUNITY WELL FUND · 25 servedInactive
- ST CHARLES COMMUNITY WELL FUNDST CHARLES COMMUNITY WELL FUND · 25 servedInactive
- ST CHARLES COMMUNITY WELL FUNDST CHARLES COMMUNITY WELL FUND · 25 servedInactive
- ST CHARLES COMMUNITY WELL FUNDST CHARLES COMMUNITY WELL FUND · 25 servedInactive
- ST CHARLES COMMUNITY WELL FUNDST CHARLES COMMUNITY WELL FUND · 25 servedInactive
- ST CHARLES COMMUNITY WELL FUNDST CHARLES COMMUNITY WELL FUND · 25 servedInactive
- ST CLAIR COUNTY COZY ACRESST CLAIR COUNTY COZY ACRES · 56 servedInactive
- ST DAVIDST DAVID · 950 servedInactive
- ST ELMOST ELMO · 1,272 servedActive
- ST FRANCISVILLEST. FRANCISVILLE · 583 servedActive
- ST JACOBST. JACOB · 1,835 servedActive
- ST JOSEPHST JOSEPH · 2,391 servedInactive
- ST LIBORYSWANSEA · 628 servedActive
- ST OF ILL CHESTER M H CENTER500 servedInactive
- ST OF ILL CHI CIRCLE CAMPUS20,000 servedInactive
- ST OF ILL CHI MH MED CTR COMPL1,000 servedInactive
- ST OF ILL CHI STATE UNIV6,800 servedInactive
- ST OF ILL J'VLLE M H CENTER889 servedInactive
- ST OF ILL MADDEN MH CENTER1,000 servedInactive
- ST OF ILL MCFARLAND M H CENTER560 servedInactive
- ST OF ILL MEYER MH CENTER250 servedInactive
- ST OF ILL NORTHEASTERN IL UNIV10,000 servedInactive
- ST OF ILL SANGAMON ST UNIVSPRINFFIELD · 150 servedInactive
- ST OF ILL SCH FOR THE DEAF820 servedInactive
- ST OF ILL SCH FOR VIS IMPAIRED280 servedInactive
- ST OF ILL SIU E ST LOUIS780 servedInactive
- ST OF ILL SIU PROP CARTERVL25 servedInactive
- ST OF ILL SIU PROP SO HIGHWAY5,800 servedInactive
- ST OF ILL UOFI DRUG HORT EXPT25 servedInactive
- ST OF ILL UOFI MED CENTER CAMP5,000 servedInactive
- ST PETERST PETER · 483 servedActive
- ST ROSE PWDST ROSE · 1,688 servedActive
- STANDARDSTANDARD · 203 servedActive
- STANFORDSTANFORD · 600 servedActive
- STARK COUNTY CASTLETONSTARK COUNTY CASTLETON · 38 servedInactive
- STATE OF ILLINOIS BISHOP HILLSTATE OF ILLINOIS · 0 servedInactive
- STATE OF ILLINOIS E LUDEMAN DESTATE OF ILLINOIS E LUDEMAN DE · 1,000 servedInactive
- STATE OF ILLINOIS FT CHARTRESSTATE OF ILLINOIS · 0 servedInactive
- STATE OF ILLINOIS FT KASKASKISTATE OF ILLINOIS · 0 servedInactive
- STATE OF ILLINOIS MARKET HOUSSTATE OF ILLINOIS · 0 servedInactive
- STATE OF ILLINOIS PEORIA COMMSTATE OF ILLINOIS PEORIA COMM · 61 servedInactive
- STATE OF ILLINOIS SHAPIRO DEVESTATE OF ILLINOIS SHAPIRO DEVE · 1,200 servedInactive
- STATE OF ILLINOIS SHAWNEETOWNSTATE OF ILLINOIS · 0 servedInactive
- STATE OF ILLINOIS ULYSSES S GSTATE OF ILLINOIS · 0 servedInactive
- STATE OF ILLINOIS VANDALIA STSTATE OF ILLINOIS · 0 servedInactive
- STATE OF ILLINOIS WARREN G. MUSTATE OF ILLINOIS WARREN G. MU · 100 servedInactive
- STATE OF ILLINOIS WAUKEGAN DEVSTATE OF ILLINOIS WAUKEGAN DEV · 710 servedInactive
- STATEVILLE CORRECTIONAL CENTERCREST HILL · 992 servedActive
- STAUNTONSTAUNTON · 5,756 servedActive
- STAUNTON RESERVOIR ROAD WATER COOPSTAUNTON · 63 servedInactive
- STEELEVILLESTEELEVILLE · 1,960 servedActive
- STEEPLE RUN SBDVDARIEN · 1,931 servedActive
- STEGERMANTENO · 9,700 servedActive
- STELLE COMMUNITY ASSNCABERY · 100 servedActive
- STEPHENSON MOBILE ESTATESFREEPORT · 128 servedActive
- STERLING ESTATES MHPFARMINGTON HILLS · 1,954 servedActive
- STEVE BERRYSTEVE BERRY · 25 servedInactive
- STEVER DISTRICT IMPROVEMENT ASSOCIATIONWEST PEORIA · 170 servedInactive
- STEWARDSTEWARD · 238 servedActive
- STEWARDSONSTEWARDSON · 747 servedActive
- STICKNEYSTICKNEY · 6,902 servedActive
- STILLMAN VALLEYSTILLMAN VALLEY · 1,200 servedActive
- STILLWATER PUMP ADDITIONSTILLWATER PUMP ADDITION · 25 servedInactive
- STOCKTONSTOCKTON · 1,728 servedActive
- STONE PARKWEST CHICAGO · 4,576 servedActive
- STONEFORTSTONEFORT · 234 servedActive
- STONETOWN EDGEWOOD TERRACE, LLCBLUE ISLAND · 248 servedActive
- STONETOWN OAKS MHP LLCGLENDALE · 280 servedActive
- STONINGTONSTONINGTON · 932 servedActive
- STOREY MANORUNSPEC PL IN CO · 25 servedInactive
- STORYBOOK HIGHLANDSBRISTOL · 100 servedActive
- STOYSTOY · 25 servedInactive
- STRASBURGSTRASBURG · 603 servedInactive
- STRATFORD WEST ASSOCIATION, INC.MACOMB · 44 servedActive
- STRAWBERRY 1MUNDELEIN · 0 servedInactive
- STRAWNSTRAWN · 133 servedActive
- STREAMWOODSTREAMWOOD · 39,577 servedActive
- STRONGHURSTSTRONGHURST · 950 servedActive
- STURM SBDVLAKE ZURICH · 54 servedInactive
- SUBLETTESUBLETTE · 426 servedActive
- SUBURBAN APARTMENTS (DE KALB UNIV DVL)OAK BROOK · 1,050 servedActive
- SUBURBAN HEIGHTS SUBDIVISIONMILAN · 75 servedActive
- SUGAR CREEK MANUFACTURED HOME COMM., LLCMILFORD · 115 servedActive
- SUGAR CREEK WTR DSTRCTUNSPEC PL IN CO · 25 servedInactive
- SUGAR CRK PWDSPRINGFIELD · 754 servedActive
- SUGAR GROVESUGAR GROVE · 11,243 servedActive
- SUGAR GROVE - DUGAN WOODSSUGAR GROVE TWP · 293 servedInactive
- SUGAR GROVE - PRESTBURYSUGAR GROVE TWP · 1,700 servedInactive
- SULLIVANSULLIVAN · 4,729 servedActive
- SUMMERFIELDSUMMERFIELD · 347 servedActive
- SUMMERLAND APTSSUMMERLAND APTS · 25 servedInactive
- SUMMITSUMMIT · 10,875 servedActive
- SUMMIT HOMEOWNERS ASSOCIATIONLAKE ZURICH · 19 servedInactive
- SUMNERNEWTON · 921 servedActive
- SUNNY ACRES MHPCHICAGO · 750 servedActive
- SUNNY ACRES NURSING HOMESUNNY ACRES NURSING HOME · 25 servedInactive
- SUNNY HILL ESTATES SUBDIVISIONORION · 375 servedActive
- SUNNYLAND SUBDIVISIONJOLIET · 300 servedActive
- SUNNYSIDESUNNYSIDE · 306 servedInactive
- SUNNYSIDE WTR CO.SUNNYSIDE WTR CO. · 347 servedInactive
- SUNRISE SENIOR LIVINGPROSPECT HEIGHTS · 100 servedActive
- SUNSET LAKESUNSET LAKE · 25 servedInactive
- SUNSET MHPNORTHBROOK · 1,400 servedActive
- SUNSET TRAILS APTSNEW LENOX · 25 servedInactive
- SUNSET VIEW HOMEOWNERS ASSNSUNSET VIEW HOMEOWNERS ASSN · 25 servedInactive
- SUNSET VIEW MHP ASUNSET VIEW MHP A · 25 servedInactive
- SUNSET VIEW MHP BSUNSET VIEW MHP B · 25 servedInactive
- SUTPHEN DR SBDVEARL TWP · 25 servedInactive
- SWANSEASWANSEA · 5,432 servedInactive
- SWEDONA WATER ASSOCIATIONSHERRARD · 109 servedActive
- SYCAMORESYCAMORE · 18,500 servedActive
- SYLMAR WATER CORPORTIONPEKIN · 0 servedInactive
- SYLVAN LAKE 1ST SUBDIVISIONMUNDELEIN · 210 servedActive
- T AND C MOBILE ESTATES MHPQUINCY · 225 servedInactive
- T-L RURAL WATER DISTRICTGLASFORD · 2,243 servedActive
- TABLE GROVETABLE GROVE · 353 servedActive
- TALLULATALLULA · 868 servedActive
- TAMAROADUQUOIN · 2,197 servedActive
- TAMMSTAMMS · 653 servedActive
- TAMPICOTAMPICO · 689 servedActive
- TANGLEWOOD SUBDTANGLEWOOD SUBD · 25 servedInactive
- TANNERON BAY HOMEOWNERS ASSOCIATIONVERNON HILLS · 256 servedActive
- TAYLOR SPRINGSTAYLOR SPRINGS · 724 servedActive
- TAYLORVILLETAYLORVILLE · 12,806 servedActive
- TAYLORVILLE CORRECTIONAL CENTERTAYLORVILLE · 1,300 servedActive
- TAZEWELL COUNTY PRAIRIE VIEWTAZEWELL COUNTY PRAIRIE VIEW · 33 servedInactive
- TAZEWELL COUNTY ROCK-ADAIR STAZEWELL COUNTY ROCK-ADAIR S · 240 servedInactive
- TAZEWELL COUNTY VALLEY VIEWTAZEWELL COUNTY · 140 servedInactive
- TEE AND GREEN SUBDIVISIONWHEATON · 0 servedInactive
- TEMPEL FARMSNEWPORT TWP · 25 servedInactive
- TEN MILE VIEW SUBDIVISIONEAST PEORIA · 21 servedInactive
- TENNANTS SHADY OAKS SUBDIVISIONMILAN · 44 servedActive
- TENNESSEETENNESSEE · 55 servedInactive
- TERRA COTTA REALTYNUNDA TWP · 42 servedInactive
- TERRACE OAK APARTMENTSGURNEE · 58 servedInactive
- TEUTOPOLISTEUTOPOLIS · 1,599 servedActive
- THAWVILLETHAWVILLE · 270 servedActive
- THAYERTHAYER · 721 servedActive
- THE ADMIRAL AT THE LAKE25 servedInactive
- THE BOARDWALKBLOOMINGTON TWP · 25 servedInactive
- THE GROVE MHPPRINCETON · 0 servedInactive
- THE LANDINGS ESTATES MHPNORMAL TWP · 250 servedInactive
- THE MEADOWSDENVER · 238 servedActive
- THE MILLOWEN TWP · 90 servedInactive
- THE ORCHARDS MHCCARTERVILLE · 253 servedActive
- THE PRESERVE AT LONG GROVEELGIN · 204 servedActive
- THEBESTHEBES · 213 servedActive
- THEODORE BEEVERTHEODORE BEEVER · 25 servedInactive
- THOMASBOROTHOMASBORO · 1,066 servedActive
- THOMPSONVILLETHOMPSONVILLE · 486 servedActive
- THOMSONPERU · 580 servedActive
- THOMSON MAXIMUM SECURITY CENTERTHOMSON · 2,166 servedActive
- THOMSON MHPTHOMSON · 63 servedInactive
- THORNTONTHORNTON · 2,333 servedActive
- THORNWOOD HMOWNRS ASSNELGIN TWP · 2,045 servedInactive
- THREE COUNTY PWDNEW DOUGLAS · 3,575 servedActive
- THUNDERBIRD WTR WELL ASSNOAKWOOD TWP · 51 servedInactive
- TILDENTILDEN · 740 servedActive
- TIMBER BROOK ESTATESGENESEO · 120 servedActive
- TIMBER CREEK MHP/FORMERLY TIMBERLANE MHPROCKFORD · 45 servedInactive
- TIMBER RIDGETIMBER RIDGE · 25 servedInactive
- TIMBER RIDGE MHPTIMBER RIDGE MHP · 25 servedInactive
- TIMBER RIDGE MOBILE ESTATESFREEPORT · 150 servedActive
- TIMBER RIDGE SBDVCOAL VALLEY · 90 servedActive
- TIMBER RIDGE SUBDIVISIONTIMBER RIDGE SUBDIVISION · 25 servedInactive
- TIMBERLAKE SUBDIVISIONTIMBERLAKE SUBDIVISION · 25 servedInactive
- TIMBERLAKES HOMEOWNERS ASSOCIATIONWATERLOO · 99 servedInactive
- TIMBERLAN SUBDIVISIONMETAMORA · 93 servedActive
- TIMBERLINE MHPNEWTON · 120 servedActive
- TINDALLS 4TH & 5TH ADDNBOWLING TWP · 32 servedInactive
- TINDALLS ADDITIONTINDALLS ADDITION · 25 servedInactive
- TINDALLS ADDN WTR SYSBOWLING TWP · 25 servedInactive
- TINDALS 3 & 6 ADDNBOWLING TWP · 25 servedInactive
- TINLEY PARKTINLEY PARK · 56,703 servedActive
- TINLEY PARK MHCTINLEY PARK · 300 servedInactive
- TISKILWATISKILWA · 740 servedActive
- TOFT ACRESRURAL TWP · 25 servedInactive
- TOLEDOTOLEDO · 1,278 servedActive
- TOLUCATOLUCA · 1,348 servedActive
- TONICATONICA · 705 servedActive
- TOULONTOULON · 1,193 servedActive
- TOVEYTOVEY · 512 servedActive
- TOWANDATOWANDA · 480 servedActive
- TOWER HILLTOWER HILL · 500 servedActive
- TOWER LAKESVOLO · 1,372 servedActive
- TOWER LAKES-COUNTRY CLUBTOWER LAKES · 1,200 servedInactive
- TOWER RIDGE SUBDIVISIONMILAN · 77 servedActive
- TOWN & COUNTRY MHPTOWN & COUNTRY MHP · 25 servedInactive
- TOWNERS SUBDIVISIONMUNDELEIN · 206 servedActive
- TOWNSEND MHP & MOTELTOWNSEND MHP & MOTEL · 25 servedInactive
- TRAILER PARKTRAILER PARK · 25 servedInactive
- TREASURE ISLAND MHPCHANNAHON · 240 servedInactive
- TREMONTTREMONT · 2,114 servedActive
- TRENTONTRENTON · 2,742 servedActive
- TRI-STATE VILLAGEHINSDALE · 636 servedInactive
- TRIANGLE MANUFACTURED HOME COMMUNITYARLINGTON HEIGHTS · 124 servedActive
- TRIANGLE MHPHERSEY · 90 servedInactive
- TRIANGLE MHPTRIANGLE MHP · 25 servedInactive
- TRIANGLE MHPTRIANGLE MHP · 25 servedInactive
- TRIMBLE WATER COMPANYROBINSON · 539 servedInactive
- TRITOWNSHIP WATER DISTRICTTRENTON · 3,470 servedActive
- TRIVOLI PWDTRIVOLI · 320 servedInactive
- TROUT VALLEY ASSOCIATIONCARY · 18 servedInactive
- TROYTROY · 16,962 servedActive
- TUCKAWAY PEORIA LLCGERMANTOWN HILLS · 98 servedActive
- TULLOCK WOODS WELL 1OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 10OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 11OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 12OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 13OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 14OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 15OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 16OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 17OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 18OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 19OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 2OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 3OWEN TWP · 27 servedInactive
- TULLOCK WOODS WELL 4OWEN TWP · 27 servedInactive
- TULLOCK WOODS WELL 5OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 6OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 7OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 8OWEN TWP · 25 servedInactive
- TULLOCK WOODS WELL 9OWEN TWP · 25 servedInactive
- TURKEY HOLLOW WELL CORPBLACKHAWK TWP · 25 servedInactive
- TUSCOLATUSCOLA · 4,875 servedActive
- U OF I-CHAMPAIGNCHAMPAIGN · 13,000 servedActive
- UAW SENIOR CITIZENS CENTERPEKIN · 240 servedActive
- ULLINULLIN · 496 servedActive
- UNIONUNION · 594 servedActive
- UNION PACIFIC RAILROADDOLTON · 1,500 servedInactive
- UNION-YORK WATER DISTRICTWEST UNION · 600 servedActive
- UNITED REGIONAL WATER COOPDIETERICH · 25 servedActive
- UNITY WATER CORPORATIONSHERRARD · 93 servedActive
- UNIVERSITY FLATS MHPWASHINGTON · 203 servedActive
- UNIVERSITY ST MARY OF THE LAKEMUNDELEIN · 365 servedInactive
- URSAURSA · 626 servedActive
- US ARMY FT SHERIDANHIGHWOOD · 3,500 servedInactive
- UTL INC-COUNTY LINE WATER COMPANYMCHENRY · 366 servedInactive
- VALENTINE COMMUNITY WELLVALENTINE COMMUNITY WELL · 25 servedInactive
- VALIERVALIER · 1,182 servedActive
- VALLEY HI NURSINGVALLEY HI NURSING · 25 servedInactive
- VALLEY HI NURSING HOMEVOLO · 125 servedActive
- VALLEY RUN MHPDANVILLE TWP · 25 servedInactive
- VALLEY VIEWVALLEY VIEW · 25 servedInactive
- VALLEY VIEW ESTATESFARMINGTON HILLS · 580 servedActive
- VALLEY VIEW MANORRANTOUL · 120 servedActive
- VALLEY VIEW MHPAMITY TWP · 25 servedInactive
- VALLEY VIEW MUTUAL WTR CMPNYFONDULAC TWP · 66 servedInactive
- VALLEY VIEW SUBDIVISION (DEKALB)KINGSTON · 120 servedActive
- VALLEY VIEW SUBDIVISION (WOODFORD)EAST PEORIA · 100 servedActive
- VALMEYERVALMEYER · 1,263 servedActive
- VAN ORIN WATER COMPANYVAN ORIN · 100 servedActive
- VANDALIAVANDALIA · 7,616 servedActive
- VANDALIA CORRECTIONAL CENTERVANDALIA · 700 servedActive
- VANDERHEYDEN SBDVCOAL VALLEY TWP · 25 servedInactive
- VARNAPERU · 342 servedActive
- VENADO LAKES-ARGYLL WATER ASSOCIATIONDELAVAN · 215 servedActive
- VERGENNESVERGENNES · 648 servedActive
- VERMILIONVERMILION · 250 servedActive
- VERMILION CO GUNFLINT SUBD70 servedInactive
- VERMILION COUNTY BOB WHITE MHVERMILION COUNTY BOB WHITE MH · 27 servedInactive
- VERMILION COUNTY CRAMERS MHPVERMILION COUNTY CRAMERS MHP · 36 servedInactive
- VERMILION GROVE WATERWORKSRIDGE FARM · 160 servedActive
- VERMILION HLS ESTSDANVILLE TWP · 200 servedInactive
- VERMILION MNRCATLIN TWP · 245 servedInactive
- VERMONTVERMONT · 738 servedActive
- VERNIE WESTVERNIE WEST · 25 servedInactive
- VERNONVERNON · 129 servedInactive
- VERNON HILLS - LAKE CO PWLIBERTYVILLE · 33,207 servedActive
- VERSAILLESVERSAILLES · 478 servedActive
- VET'S PLACE SBDVCHILLICOTHE TWP · 85 servedInactive
- VICTORIAVICTORIA · 268 servedActive
- VIENNAVIENNA · 1,618 servedActive
- VIENNA CORRECTIONAL CENTERVIENNA · 501 servedActive
- VILLA PARKVILLA PARK · 22,263 servedActive
- VILLAGE GREEN MOBILE HOME PARKCROFTON · 220 servedActive
- VILLAGE MHCTMECHANICSBG TWP · 69 servedInactive
- VILLAGE OF LEEVILLAGE OF LEE · 25 servedInactive
- VILLAGE PARK MHPVILLAGE PARK MHP · 25 servedInactive
- VIOLAVIOLA · 970 servedActive
- VIRDENVIRDEN · 3,274 servedActive
- VIRGINIAVIRGINIA · 1,514 servedActive
- VISTA HGTSVISTA HGTS · 25 servedInactive
- VOLOVOLO · 6,629 servedActive
- W G MURRAY DEVELOPMENT CENTERCENTRALIA · 290 servedActive
- W R HILSENHOFF WATER SYSTEMW R HILSENHOFF WATER SYSTEM · 25 servedInactive
- WADSWORTH OAKS SUBDIVISIONWADSWORTH · 185 servedActive
- WADSWORTH VALLEY VIEWWADSWORTH VALLEY VIEW · 25 servedInactive
- WAGGONERWAGGONER · 186 servedActive
- WALL'S MHPYORK TWP · 25 servedInactive
- WALNUTWALNUT · 1,311 servedActive
- WALNUT GROVE MHCMARION · 40 servedActive
- WALNUT HILLCENTRALIA · 1,180 servedActive
- WALNUT HILL WELL ASSNBLOUNT TWP · 25 servedInactive
- WALTER WELLMANWALTER WELLMAN · 25 servedInactive
- WALTONVILLEMT. VERNON · 1,901 servedActive
- WAMACCENTRALIA · 1,030 servedActive
- WAPELLAWAPELLA · 513 servedActive
- WARRENWARREN · 1,323 servedActive
- WARRENSBURGWARRENSBURG · 1,230 servedActive
- WARRENVILLEWARRENVILLE · 12,350 servedActive
- WARRENVILLE ALBRIGHT STWARRENVILLE · 60 servedInactive
- WARRENVILLE IL MUN WTRWARRENVILLE IL MUN WTR · 1,650 servedInactive
- WARRENVILLE RAY STRWARRENVILLE · 93 servedInactive
- WARRENVILLE WELL 6WARRENVILLE · 240 servedInactive
- WARSAWWARSAW · 1,480 servedActive
- WASCO SDWASCO · 4,000 servedActive
- WASHBURNWASHBURN · 1,032 servedActive
- WASHBURN MHPSHARON TWP · 25 servedInactive
- WASHINGTONWASHINGTON · 14,793 servedActive
- WASHINGTON COUNTY WATER COMPANYNASHVILLE · 11,374 servedActive
- WASHINGTON HGTSWASHINGTON HGTS · 25 servedInactive
- WATAGAWATAGA · 965 servedActive
- WATCH E KEE MANUFACTURED HOME COMMUNITYMILFORD · 138 servedActive
- WATER WERKSCOAL VALLEY · 43 servedActive
- WATERGATE SUBDIVISIONDIETERICH · 101 servedInactive
- WATERLOOWATERLOO · 10,190 servedActive
- WATERMANWATERMAN · 1,497 servedActive
- WATSEKAWATSEKA · 5,500 servedActive
- WAUCONDAWAUCONDA · 14,084 servedActive
- WAUKEGANWAUKEGAN · 87,149 servedActive
- WAVERLYWAVERLY · 1,194 servedActive
- WAYNE CITYWAYNE CITY · 1,239 servedActive
- WAYNESVILLEWAYNESVILLE · 381 servedActive
- WAYSIDE MHPRIVERSIDE TWP · 58 servedInactive
- WEATHERSTONE LAKES MHPPHOENIX · 221 servedActive
- WEE-MA-TUK WATER DISTRICTCUBA · 863 servedActive
- WELDONWELDON · 404 servedActive
- WELLINGTONMILFORD · 222 servedActive
- WELTON DRIVE COMMUNITY WELLWELTON DRIVE COMMUNITY WELL · 25 servedInactive
- WENONAWENONA · 974 servedActive
- WERNER GOER'S SUBDIVISIONWERNER GOER'S SUBDIVISION · 25 servedInactive
- WERNER GOERS SBDVMOUNDS TWP · 25 servedInactive
- WEST BROOKLYNWEST BROOKLYN · 131 servedActive
- WEST CHICAGOWEST CHICAGO · 25,166 servedActive
- WEST CITYWEST CITY · 664 servedActive
- WEST DUNDEEWEST DUNDEE · 7,845 servedActive
- WEST FRANKFORTWEST FRANKFORT · 8,650 servedActive
- WEST LIBERTY-DUNDAS WATER DISTRICTDUNDAS · 484 servedActive
- WEST MORGAN WATER CORPORATIONWINCHESTER · 53 servedActive
- WEST POINTWEST POINT · 248 servedActive
- WEST PRAIRIE WATER CO-OPMACOMB · 2,395 servedActive
- WEST PRAIRIE WATER COMPANYARTHUR · 4,800 servedActive
- WEST SALEMWEST SALEM · 819 servedActive
- WEST SHORE PARK SUBDIVISIONMUNDELEIN · 590 servedActive
- WEST SHORELAND SUBDIVISIONMUNDELEIN · 189 servedActive
- WEST SIDE MHPWEST SIDE MHP · 25 servedInactive
- WEST SIDE MHPCLINTON · 100 servedActive
- WEST TOWN MHPWEST TOWN MHP · 25 servedInactive
- WESTCHESTERWESTCHESTER · 16,241 servedActive
- WESTERN IL CORRECTIONAL CENTERMT. STERLING · 1,600 servedActive
- WESTERN ILLINOIS UNIVERSITYMACOMB · 8,000 servedActive
- WESTERN OAKS SBDVUNSPEC PL IN CO · 25 servedInactive
- WESTERN SPRINGSWESTERN SPRINGS · 13,274 servedActive
- WESTERN WAYNE WATER DISTRICTWAYNE CITY · 3,516 servedActive
- WESTFIELDWESTFIELD · 678 servedActive
- WESTMONTWESTMONT · 24,161 servedActive
- WESTPORT VILLAGE APARTMENT LPLIBERTYVILLE · 200 servedInactive
- WESTPORT WATER MUTUALOTTAWA · 61 servedInactive
- WESTVIEW MANOR MHPSCOTT TWP · 25 servedInactive
- WESTVILLEWESTVILLE · 3,917 servedActive
- WESTWIND ESTATESPONTIAC · 120 servedActive
- WESTWOODSPRINGFIELD · 44 servedActive
- WESTWOOD PLACESPRINGFIELD · 152 servedActive
- WHEATONWHEATON · 53,970 servedActive
- WHEELINGWHEELING · 39,725 servedActive
- WHISPERING HILLS MHPMOLINE · 100 servedActive
- WHISPERING LAKES WATER SYSTEM, INC.NORTHBROOK · 375 servedActive
- WHISPERING PINES MHP-LOAMILOAMI · 0 servedInactive
- WHITE CITYMT. OLIVE · 433 servedActive
- WHITE HALLWHITE HALL · 2,313 servedActive
- WHITE HEATH WATERWORKSWHITE HEATH · 685 servedActive
- WHITE OAKS ESTATES WATER ASSOC., INC.DIXON · 410 servedActive
- WHITE SQUIRREL TRAILER PARKWHITE SQUIRREL TRAILER PARK · 25 servedInactive
- WHITES ADDN WELL 1HAMPTON TWP · 25 servedInactive
- WHITES CMNTY WELL 2HAMPTON TWP · 32 servedInactive
- WIENEN ESTATESGALENA · 95 servedActive
- WILDWOOD ESTATESOREM · 1,001 servedActive
- WILDWOOD SUBDIVISION - LAKE CO PWLIBERTYVILLE · 14,832 servedActive
- WILL COUNTY C AND GWILL COUNTY C AND G · 40 servedInactive
- WILLARD COTHRAN APTSWILLARD COTHRAN APTS · 25 servedInactive
- WILLIAM BLAYLOCKWILLIAM BLAYLOCK · 25 servedInactive
- WILLIAM HESTERWILLIAM HESTER · 25 servedInactive
- WILLIAMSFIELDWILLIAMSFIELD · 575 servedActive
- WILLIAMSONSTAUNTON · 340 servedInactive
- WILLIAMSVILLEWILLIAMSVILLE · 6,198 servedActive
- WILLIAMSVILLE-SHERMAN WTR CMSNUNSPEC PL IN CO · 3,890 servedInactive
- WILLISVILLEWILLISVILLE · 799 servedActive
- WILLOW CREEK NORTH MHPBLOOMINGTON · 250 servedActive
- WILLOW HAVEN MHPNEW YORK · 270 servedActive
- WILLOW HILLWILLOW HILL · 309 servedActive
- WILLOW LAKE ESTATES MHPELGIN · 920 servedActive
- WILLOW WAY TERRACEWILLOW WAY TERRACE · 25 servedInactive
- WILLOWAY TERRACE MHPCHICAGO · 900 servedActive
- WILLOWBROOKWILLOWBROOK · 9,000 servedActive
- WILMETTEWILMETTE · 27,087 servedActive
- WILMINGTONWILMINGTON · 5,700 servedActive
- WILSON ADDITIONWILSON ADDITION · 25 servedInactive
- WILSONVILLEWILSONVILLE · 536 servedActive
- WINCHESTERWINCHESTER · 1,589 servedActive
- WINDCREST SUBDIVISIONCOAL VALLEY · 49 servedActive
- WINDGATE COUNTY ESTATESWINDGATE COUNTY ESTATES · 25 servedInactive
- WINDGATE HOMEWINDGATE HOME · 25 servedInactive
- WINDING CREEK ESTATESTAYLOR RIDGE · 120 servedActive
- WINDMILL ESTATESMOMENCE · 65 servedActive
- WINDSORWINDSOR · 1,200 servedActive
- WINDWOOD WATER SYSTEM, INC.GALESBURG · 185 servedActive
- WINFIELDWINFIELD · 9,835 servedActive
- WINNEBAGOWINNEBAGO · 3,000 servedActive
- WINNEBAGO CO CHECKA MHP28 servedInactive
- WINNEBAGO CO CHERRYVALE DEVEL25 servedInactive
- WINNEBAGO CO LEANNA LAKESIDE 632 servedInactive
- WINNEBAGO CO LEANNA LAKESIDE 732 servedInactive
- WINNEBAGO COUNTY LEANNA LAKESWINNEBAGO COUNTY LEANNA LAKES · 28 servedInactive
- WINNEBAGO COUNTY SOUTH BLUFFWINNEBAGO COUNTY SOUTH BLUFF · 380 servedInactive
- WINNETKAWINNETKA · 12,475 servedActive
- WINSLOWFREEPORT · 350 servedActive
- WINTHROP HARBORWINTHROP HARBOR · 6,565 servedActive
- WM W FOX DEVELOPMENT CENTERDWIGHT · 174 servedActive
- WME WATER COMMISSIONUNION TWP · 150 servedInactive
- WOLF RIDGE WELL CORPORATIONCOLONA · 95 servedActive
- WONDER LAKEWONDER LAKE · 3,870 servedActive
- WONDER LAKE (NIU)WONDER LAKE · 1,950 servedActive
- WOOD DALEWOOD DALE · 14,012 servedActive
- WOOD DALE ESTATESMELROSE PARK · 145 servedActive
- WOOD LAND MHPWOOD LAND MHP · 25 servedInactive
- WOOD PARK WATER CORPANDALUSIA TWP · 25 servedInactive
- WOOD RIVERWOOD RIVER · 10,464 servedActive
- WOODCREEK MHPJOLIET · 85 servedInactive
- WOODFORD CO WOODFORD HETS SUBDMETAMORA · 27 servedInactive
- WOODFORD COUNTY RIVERVIEW HWOODFORD COUNTY RIVERVIEW H · 25 servedInactive
- WOODHAVENSUBLETTE · 4,100 servedActive
- WOODHULLWOODHULL · 771 servedActive
- WOODLANDWOODLAND · 319 servedActive
- WOODLAND A AND B MHPDIXON · 490 servedActive
- WOODLAND ACRES MHCBLUE ISLAND · 230 servedActive
- WOODLAND ACRES MHPERLANGER · 464 servedActive
- WOODLAND ESTATES WATER SYSTEMWOODLAND ESTATES WATER SYSTEM · 25 servedInactive
- WOODLAND ESTATES WATER SYSTEMWOODLAND ESTATES WATER SYSTEM · 25 servedInactive
- WOODLAND HEIGHTS ESTATES SUBDIVISIONEDELSTEIN · 0 servedInactive
- WOODLAND MHPROCKFORD TWP · 200 servedInactive
- WOODLAND VALLEYHANOVER TWP · 4 servedInactive
- WOODLAWNWOODLAWN · 3,587 servedActive
- WOODRIDGEWOODRIDGE · 33,566 servedActive
- WOODRIDGE ESTATES 1 EASTFREEPORT · 0 servedInactive
- WOODRIDGE ESTATES 1 WESTFREEPORT · 0 servedInactive
- WOODRIDGE ESTATES 2FREEPORT · 1 servedInactive
- WOODRIDGE-FARMINGDALEDOWNERS GR TWP · 2,865 servedInactive
- WOODS CREEK WATER SUPPLYWONDER LAKE · 1,000 servedInactive
- WOODS MHPGEORGETOWN TWP · 25 servedInactive
- WOODSMOKE RANCH ASSN WELL 3MANLIUS TWP · 100 servedInactive
- WOODSMOKE RANCH ASSOCIATIONSENECA · 23 servedInactive
- WOODSTOCKWOODSTOCK · 25,630 servedActive
- WOODWAY COURT SBDVGROVELAND TWP · 47 servedInactive
- WORDENWORDEN · 1,096 servedActive
- WORTHWORTH · 10,970 servedActive
- WTR XIVBLACKHAWK TWP · 32 servedInactive
- WYANETWYANET · 886 servedActive
- WYE PWDMARION · 0 servedInactive
- WYNSTONE WATER COMPANYGENEVA · 1,424 servedActive
- WYOMINGWYOMING · 1,300 servedActive
- XENIAXENIA · 542 servedActive
- YARBOROUGH TRAILER COURTYARBOROUGH TRAILER COURT · 25 servedInactive
- YATES CITYYATES CITY · 828 servedActive
- YORK CENTER COOPDARIEN · 212 servedInactive
- YORK TOWNSHIP WATER SYSTEMDARIEN · 1,423 servedActive
- YORKVILLEYORKVILLE · 23,000 servedActive
- YOUNGS HILLCREST MHPLUDLOW · 34 servedActive
- YOUNGS MHPSCOTT TWP · 25 servedInactive
- ZEIGLERZEIGLER · 1,774 servedActive
- ZELLER MHCPEORIA TWP · 604 servedInactive
- ZIONZION · 24,442 servedActive
| System name | City | Population served | Status |
|---|---|---|---|
| 114 TOWNCREST DR APTS | NEW LENOX | 52 | Inactive |
| 11TH STREET A WELL | SOUTH MOLINE TWP | 0 | Inactive |
| 15TH STR B WTR CORP | SOUTH MOLINE TWP | 32 | Inactive |
| 176TH AVE W CMNTY WTR SYS | EDGINGTON TWP | 25 | Inactive |
| 1ST AVENUE NORTH APTS | HAMPTON TWP | 32 | Inactive |
| 2800 APTS | ROCKFORD TWP | 25 | Inactive |
| 2ND STREET WATER ASSOCIATION | ANTIOCH | 24 | Inactive |
| A.C. MOBILE HOME PARK | MANTENO TWP | 25 | Inactive |
| ABINGDON | MONMOUTH | 3,275 | Active |
| ABS WATER COOP | CLAYTON | 6,858 | Active |
| ACORN ACRES MHP | STEVENS POINT | 52 | Active |
| ACORN ACRES SUBDIVISION | LAKE ZURICH | 240 | Inactive |
| ADAMS COUNTY WATER DISTRICT NO 1 | PALOMA | 833 | Active |
| ADDISON | ADDISON | 38,017 | Active |
| AFFORDABLE LIVING CONCEPTS | WHEELING TWP | 173 | Inactive |
| AIR VIEW MHP | MOLINE | 200 | Active |
| AKIN WATER DISTRICT | THOMPSONVILLE | 2,368 | Active |
| ALBANY | ALBANY | 846 | Active |
| ALBANY MHP | ALBANY MHP | 25 | Inactive |
| ALBERS | ALBERS | 1,231 | Active |
| ALBION | ALBION | 2,839 | Active |
| ALDEN LONG GROVE NURSING CENTER | INGLESIDE | 218 | Active |
| ALEDO | ALEDO | 3,470 | Active |
| ALEXANDER WATER DISTRICT | ALEXANDER | 442 | Active |
| ALEXIS | ALEXIS | 836 | Active |
| ALFRED BELKWITH | ALFRED BELKWITH | 25 | Inactive |
| ALGONQUIN | ALGONQUIN | 30,700 | Active |
| ALHAMBRA | ALHAMBRA | 755 | Active |
| ALLEN EVANS | ALLEN EVANS | 25 | Inactive |
| ALLENDALE | ALLENDALE | 458 | Active |
| ALLENDALE ASSOCIATION | LAKE VILLA | 400 | Active |
| ALLERTON | ALLERTON | 304 | Active |
| ALLMENDINGER SUBDIVISION #3 | ALLMENDINGER SUBDIVISION #3 | 25 | Inactive |
| ALMA | ALMA | 336 | Active |
| ALPHA | ALPHA | 626 | Active |
| ALPINE VILLAGE MHP | PHOENIX | 994 | Active |
| ALSEY-GLASGOW WATER COMMISSION | WINCHESTER | 475 | Active |
| ALSIP | ALSIP | 19,063 | Active |
| ALTAMONT | ALTAMONT | 2,300 | Active |
| ALTO PASS | ALTO PASS | 1,032 | Inactive |
| ALTO PASS WATER DISTRICT | ALTO PASS | 1,015 | Active |
| ALTON MHC | WOOD RIVER TWP | 320 | Inactive |
| ALTONA | ALTONA | 483 | Active |
| ALVIN | ALVIN | 270 | Active |
| AMBOY | AMBOY | 2,500 | Active |
| AMERICAN WATER OPER AND MAINTENANCE, LLC | SCOTT AIR FORCE BASE | 6,779 | Active |
| ANCHOR | ANCHOR | 160 | Active |
| ANDOVER | ANDOVER | 565 | Active |
| ANGAMON CO RAIL GOLF CLUB | — | 25 | Inactive |
| ANNA | ANNA | 4,910 | Active |
| ANNA-JONESBORO WATER COMMISSION | JONESBORO | 26 | Active |
| ANNAWAN | PERU | 843 | Active |
| ANNS MHP | ROCKFORD | 12 | Inactive |
| ANTIOCH | ANTIOCH | 14,175 | Active |
| APOLLO ACRES | APOLLO ACRES | 25 | Inactive |
| APPLE CANYON STATE PARK | RUSH TWP | 0 | Inactive |
| APPLE CREEK WATER COOP | JACKSONVILLE | 968 | Active |
| APPLE RIVER | APPLE RIVER | 347 | Active |
| AQUA ILLINOIS-CANDLEWICK DVN | KANKAKEE | 6,426 | Active |
| AQUA ILLINOIS-CRYSTAL CLEAR WATER CO. | KANKAKEE | 855 | Active |
| AQUA ILLINOIS-EASTWOOD MANOR | KANKAKEE | 728 | Active |
| AQUA ILLINOIS-FAIRHAVEN ESTATES | KANKAKEE | 225 | Active |
| AQUA ILLINOIS-HAWTHORN WDS COUNTRY CLUB | — | 1 | Inactive |
| AQUA ILLINOIS-HAWTHORN WOODS | KANKAKEE | 3,065 | Active |
| AQUA ILLINOIS-HIGHLAND ESTATES | KANKAKEE | 171 | Active |
| AQUA ILLINOIS-INDIANOLA | KANKAKEE | 224 | Active |
| AQUA ILLINOIS-IVANHOE | KANKAKEE | 650 | Active |
| AQUA ILLINOIS-KANKAKEE | KANKAKEE | 80,000 | Active |
| AQUA ILLINOIS-MCHENRY SHORES | KANKAKEE | 1,862 | Active |
| AQUA ILLINOIS-MOECHERVILLE | KANKAKEE | 920 | Active |
| AQUA ILLINOIS-NORDIC WOODS | KANKAKEE | 500 | Active |
| AQUA ILLINOIS-NORTH MAINE UTILITIES | KANKAKEE | 30,043 | Active |
| AQUA ILLINOIS-NUNDA | KANKAKEE | 485 | Active |
| AQUA ILLINOIS-OAK BROOK | KANKAKEE | 5,361 | Active |
| AQUA ILLINOIS-OAK RUN | KANKAKEE | 1,885 | Active |
| AQUA ILLINOIS-OAKVIEW | KANKAKEE | 312 | Active |
| AQUA ILLINOIS-PEOTONE | KANKAKEE | 4,182 | Active |
| AQUA ILLINOIS-PHILO | KANKAKEE | 1,378 | Active |
| AQUA ILLINOIS-RAVENNA | KANKAKEE | 267 | Active |
| AQUA ILLINOIS-ROCKWELL | KANKAKEE | 1,762 | Active |
| AQUA ILLINOIS-SHERIDAN GROVE | KANKAKEE | 120 | Active |
| AQUA ILLINOIS-SKYLINE | KANKAKEE | 249 | Active |
| AQUA ILLINOIS-SKYLINE (NORTHERN) | KANKAKEE | 1,200 | Active |
| AQUA ILLINOIS-SUMMERDALE | KANKAKEE | 145 | Active |
| AQUA ILLINOIS-SUN RIVER TERRACE | KANKAKEE | 498 | Active |
| AQUA ILLINOIS-TIMBER RIDGE | KANKAKEE | 2,322 | Active |
| AQUA ILLINOIS-UNIVERSITY PARK | KANKAKEE | 7,002 | Active |
| AQUA ILLINOIS-VAUGHNDALE MEADOWS | KANKAKEE | 330 | Inactive |
| AQUA ILLINOIS-VERMILION COUNTY | KANKAKEE | 30,106 | Active |
| AQUA ILLINOIS-VILLAGE WOODS | KANKAKEE | 800 | Active |
| AQUA ILLINOIS-WILLOWBROOK | KANKAKEE | 5,100 | Active |
| AQUA ILLINOIS-WOODLAWN | KANKAKEE | 375 | Active |
| ARAPAHO VILLAGE MHP | BELLEVILLE | 368 | Active |
| ARCHIE SIMMONS | ARCHIE SIMMONS | 25 | Inactive |
| ARCOLA | ARCOLA | 2,927 | Active |
| ARCOLA/TUSCOLA WATER TRANSMISSIOIN MAIN | TUSCOLA | 50 | Active |
| ARENZVILLE | ARENZVILLE | 419 | Active |
| ARENZVILLE RURAL WATER COOPERATIVE | ALEXANDER | 675 | Active |
| ARGENTA | ARGENTA | 900 | Active |
| ARLINGTON | ARLINGTON | 250 | Active |
| ARLINGTON HEIGHTS | ARLINGTON HEIGHTS | 73,320 | Active |
| ARLINGTON HEIGHTS APTS | NAMEOKI TWP | 200 | Inactive |
| ARLINGTON PARK RACE TRACK | ARLINGTON HEIGHTS | 0 | Inactive |
| ARLINGTON WTR DSTRCT | NAMEOKI TWP | 800 | Inactive |
| ARMINGTON | ARMINGTON | 310 | Active |
| AROMA PARK | KANKAKEE | 0 | Inactive |
| ARROW HEAD RANCH | MOLINE | 66 | Inactive |
| ARROW TRAILER PARK | ARROW TRAILER PARK | 25 | Inactive |
| ARROWHEAD ACRES SBDV | FONDULAC TWP | 40 | Inactive |
| ARROWSMITH | ARROWSMITH | 315 | Active |
| ARTHUR | ARTHUR | 2,300 | Active |
| ASH SUBDIVISION WATER SYSTEM A | ASH SUBDIVISION WATER SYSTEM A | 25 | Inactive |
| ASHKUM | ASHKUM | 724 | Active |
| ASHLAND | ASHLAND | 1,333 | Active |
| ASHLEY | ASHLEY | 565 | Active |
| ASHMORE | ASHMORE | 637 | Active |
| ASHMORE ESTATES | ASHMORE TWP | 25 | Inactive |
| ASHS WELL 2 SBDV | PREEMPTION TWP | 25 | Inactive |
| ASHS WELL 4 SBDV | PREEMPTION TWP | 32 | Inactive |
| ASHTON | ASHTON | 967 | Active |
| ASKVIG IMPRV ASSN | FLAGG TWP | 294 | Inactive |
| ASSUMPTION | ASSUMPTION | 1,315 | Active |
| ASTORIA | ASTORIA | 1,375 | Active |
| ATHENS | ATHENS | 4,575 | Active |
| ATKINSON | PERU | 955 | Active |
| ATLANTA | ATLANTA | 1,692 | Active |
| ATWOOD | ATWOOD | 1,155 | Active |
| AUBURN | AUBURN | 4,574 | Active |
| AUDN TRAILER PARK | AUDN TRAILER PARK | 25 | Inactive |
| AUGUSTA | AUGUSTA | 553 | Active |
| AURORA | AURORA | 183,000 | Active |
| AURORA COMMUNITY WATER ASSN | AURORA | 150 | Active |
| AUTUMN ACCOLADE SENIOR HOME | GREEN VALLEY | 16 | Inactive |
| AUTUMN RIDGE ESTATES | LOWELL | 68 | Active |
| AVA | AVA | 1,053 | Active |
| AVALON MHP | BENTON TWP | 73 | Inactive |
| AVANTARA LONG GROVE | LONG GROVE | 200 | Active |
| AVISTON | AVISTON | 2,545 | Active |
| AVON | BUSHNELL | 920 | Active |
| BAILEY RETREAT WTR SYS | RURAL TWP | 25 | Inactive |
| BAILEY SBDV | PRINCETON TWP | 25 | Inactive |
| BALCAEN 3RD ADDN WELL 4 | BLACKHAWK TWP | 25 | Inactive |
| BALCAEN 3RD ADDN WELL 5 | BLACKHAWK TWP | 25 | Inactive |
| BALCEANS SUBDIVISION | BALCEANS SUBDIVISION | 25 | Inactive |
| BALCEANS SUBDIVISION | BALCEANS SUBDIVISION | 25 | Inactive |
| BALDWIN | NASHVILLE | 601 | Active |
| BALMORAL HEIGHTS SUBDIVISION | CRETE | 400 | Active |
| BALMORAL WO | UNSPEC PL IN CO | 25 | Inactive |
| BANDOR ADDITION | BANDOR ADDITION | 25 | Inactive |
| BANNOCKBURN | BANNOCKBURN | 1,013 | Active |
| BARBER COLMAN CMPNY | LOVES PARK | 1,600 | Inactive |
| BARBERRY ACRES MHP | CHEBANSE | 50 | Active |
| BARDOLPH | BARDOLPH | 303 | Active |
| BARRETS MHP | ROCKFORD TWP | 118 | Inactive |
| BARRETTS MHP SUPPLY #2 | BARRETTS MHP SUPPLY #2 | 25 | Inactive |
| BARRINGTON | BARRINGTON | 10,327 | Active |
| BARRINGTON HILLS VILLAGE HALL | BARRINGTON HILLS VILLAGE HALL | 25 | Inactive |
| BARRINGTON WOODS MWA | PALATINE TWP | 210 | Inactive |
| BARRON SBDV | SPRING BAY TWP | 48 | Inactive |
| BARRY | BARRY | 1,318 | Active |
| BARTELSO | BARTELSO | 635 | Active |
| BARTLETT | BARTLETT | 41,500 | Active |
| BARTMANN HEALTH CARE CENTER | EMINENCE TWP | 90 | Inactive |
| BATAVIA | BATAVIA | 26,098 | Active |
| BATCHTOWN | BATCHTOWN | 290 | Active |
| BAYLES LAKE LOT OWNERS ASSOCIATION | LODA | 645 | Active |
| BAYLIS | BAYLIS | 180 | Active |
| BEACH MHP | DENVER | 624 | Active |
| BEACH PARK | BEACH PARK | 8,710 | Active |
| BEACH PARK NO.2 | BEACH PARK | 3,435 | Inactive |
| BEACON PAXTON LLC | PAXTON | 55 | Active |
| BEARDSTOWN | BEARDSTOWN | 5,951 | Active |
| BEASON CHESTNUT PWD | CHESTNUT | 435 | Active |
| BEAVER CREEK VILLAGE MHP | ST ANNE | 13 | Inactive |
| BEAVERVILLE | BEAVERVILLE | 450 | Active |
| BECKEMEYER | BECKEMEYER | 913 | Active |
| BECKWITH COMMUNITY ASSOCIATION | CRETE | 75 | Inactive |
| BEDFORD PARK | BEDFORD PARK | 602 | Active |
| BEECHER | BEECHER | 4,713 | Active |
| BEECHER CITY | BEECHER CITY | 500 | Active |
| BEL-AIR SBDV | JOLIET TWP | 25 | Inactive |
| BEL-ROCK MHP | MACHESNEY PARK | 14 | Inactive |
| BELGIUM | BELGIUM | 480 | Inactive |
| BELKNAP | BELKNAP | 516 | Active |
| BELLE RIVE | BELLE RIVE | 1,930 | Active |
| BELLFLOWER | BELLFLOWER | 343 | Active |
| BELLMONT | BELLMONT | 297 | Active |
| BELLWOOD | BELLWOOD | 19,156 | Active |
| BELMONT WATER INC | WATSEKA | 0 | Inactive |
| BELMONT-HIGHWOOD PWD | DOWNERS GR TWP | 498 | Inactive |
| BELVIDERE | BELVIDERE | 25,339 | Active |
| BEMENT | BEMENT | 1,661 | Active |
| BENLD | BENLD | 1,612 | Active |
| BENSENVILLE | BENSENVILLE | 18,537 | Active |
| BENSON | BENSON | 401 | Active |
| BENTON | BENTON | 8,104 | Active |
| BERKELEY | BERKELEY | 5,214 | Active |
| BERWYN | BERWYN | 57,250 | Active |
| BETHALTO | BETHALTO | 15,210 | Active |
| BETHANY | BETHANY | 1,475 | Active |
| BEVERLY MNR CENTRAL IMPRV ASSN | WASHINGTON TWP | 25 | Inactive |
| BEVERLY MNR-GRANT | WASHINGTON TWP | 25 | Inactive |
| BEVERLY MNR-MCGINLEY | WASHINGTON TWP | 25 | Inactive |
| BIG MUDDY RIVER CC | INA | 1,771 | Active |
| BIGGSVILLE | BIGGSVILLE | 273 | Active |
| BILL-MAR HEIGHTS MHP | ROCKFORD | 240 | Active |
| BIRDS PINKSTAFF WATER DISTRICT | LAWRENCVILLE | 920 | Active |
| BISHOP HILL | BISHOP HILL | 113 | Active |
| BISHOP MOBIL HOME PARK | BISHOP MOBIL HOME PARK | 25 | Inactive |
| BISHOP MOBILE COURT #2 | BISHOP MOBILE COURT #2 | 25 | Inactive |
| BISHOP MOBILE HOME PARK | BISHOP MOBILE HOME PARK | 25 | Inactive |
| BISMARCK COMMUNITY WATER DISTRICT | BISMARCK | 900 | Active |
| BISSELL VILLAGE MHC | SOUTHFIELD | 220 | Active |
| BLACK HAWK COLLEGE MOLINE CAMPUS | — | 25 | Inactive |
| BLACKHAWK COLLEGE EAST CAMPUS | GALVA | 80 | Active |
| BLACKHAWK ESTATES LLC | CHICAGO | 1,238 | Active |
| BLACKWELL CMNTY WELL | ELA TWP | 25 | Inactive |
| BLAIRSVILLE PWD | HURST | 807 | Active |
| BLAN MAR HILLS HOMEOWNERS ASSN | LIBERTYVILLE TWP | 25 | Inactive |
| BLANDINSVILLE | BLANDINSVILLE | 569 | Active |
| BLM GW MHP, LLC | ADDISON | 390 | Active |
| BLOOMINGDALE | BLOOMINGDALE | 22,018 | Active |
| BLOOMINGTON | BLOOMINGTON | 77,610 | Active |
| BLOOMINGTON TOWNSHIP PWD WEST PHASE | BLOOMINGTON | 1,800 | Active |
| BLOOMINGTON TOWNSHIP PWD-CRESTWICKE | BLOOMINGTON | 900 | Active |
| BLUE AND GOLD HOMEOWNERS ASSN | ROCKFORD TWP | 25 | Inactive |
| BLUE ISLAND | BLUE ISLAND | 21,494 | Active |
| BLUE MOUND | MOWEAQUA | 1,300 | Active |
| BLUFF LAKE LODGES, INC. | ANTIOCH | 24 | Active |
| BLUFF VIEW MHP | FALL CREEK TWP | 25 | Inactive |
| BLUFFS | BLUFFS | 748 | Active |
| BLUFORD | BLUFORD | 1,880 | Active |
| BOLEY MOBILE HOME PARK | BOLEY MOBILE HOME PARK | 25 | Inactive |
| BOLINGBROOK | WOODRIDGE | 15,404 | Inactive |
| BOLINGBROOK SYSTEM 2 | WOODRIDGE | 9,160 | Inactive |
| BOND CO CTRY LINE HOMEOWNERS | SORENTO | 36 | Inactive |
| BOND/MADISON WATER COMPANY | POCAHONTAS | 6,645 | Active |
| BONE GAP | BONE GAP | 207 | Active |
| BONNIE | BONNIE | 437 | Active |
| BONNIE BRAE FOREST MANOR SNDST | LOCKPORT | 1,338 | Active |
| BONNIE LANE WATER SUPPLY | YORKVILLE | 25 | Inactive |
| BOODY COMMUNITY WATER COMPANY | MACON | 232 | Active |
| BOOKWALTER WOODS MHP | GARDNER | 504 | Active |
| BOULDER HILL MHP | BOULDER HILL MHP | 25 | Inactive |
| BOURBON SQUARE APTS | PALATINE TWP | 1,224 | Inactive |
| BOURBONNAIS | BOURBONNAIS | 6,000 | Inactive |
| BOWEN | BOWEN | 494 | Active |
| BOYLESTON WATERWORKS CORP | FAIRFIELD | 948 | Active |
| BRACEVILLE | BRACEVILLE | 800 | Active |
| BRADFORD | BRADFORD | 676 | Active |
| BRADLEY | BRADLEY | 4,989 | Inactive |
| BRADLEY HEIGHTS SUBDIVISION | ROCKFORD | 82 | Active |
| BRADLEY ROAD SYSTEM - LAKE CO PW | LIBERTYVILLE | 612 | Inactive |
| BRAIDWOOD | BRAIDWOOD | 6,194 | Active |
| BREAZEALE MHP | AURORA | 154 | Inactive |
| BREESE | BREESE | 4,772 | Active |
| BREEZEWAY SBDV | FONDULAC TWP | 110 | Inactive |
| BREEZY BLUFF HOMEOWNERS ASSN | BREEZY BLUFF HOMEOWNERS ASSN | 25 | Inactive |
| BRIAR GARDEN APTS | ROCKFORD TWP | 60 | Inactive |
| BRIARCREST SBDV HOMEOWNERS ASSOCIATION | SCHAUMBURG | 207 | Active |
| BRIARWOOD ACRES SBDV | CORTLAND TWP | 110 | Inactive |
| BRIARWOOD SBDV | GROVELAND TWP | 30 | Inactive |
| BRIDGEPORT | BRIDGEPORT | 2,572 | Active |
| BRIDGEVIEW | BRIDGEVIEW | 16,467 | Active |
| BRIDGEVIEW SOUTHFIELD SBDV | BRIDGEVIEW | 2,200 | Inactive |
| BRIGHTON | BRIGHTON | 5,041 | Active |
| BRIGHTON POND HOMEOWNERS ASSOCIATION | ZION | 57 | Inactive |
| BRIMFIELD | BRIMFIELD | 856 | Active |
| BRINKMAN TRAILER PARK | BRINKMAN TRAILER PARK | 25 | Inactive |
| BROADVIEW | BROADVIEW | 7,847 | Active |
| BROADVIEW ACADEMY | BROADVIEW ACADEMY | 25 | Inactive |
| BROADVIEW ESTATES EAST PEORIA | EAST PEORIA | 89 | Active |
| BROADVIEW-WESTCHESTER JOINT WATER AGENCY | BROADVIEW | 1 | Active |
| BROADWAY HOMEOWNERS ASSOCIATION | GROVELAND | 30 | Inactive |
| BROADWELL | BROADWELL | 169 | Active |
| BROCTON | BROCTON | 288 | Active |
| BROOKDALE SENIOR LIVING - VERNON HILLS | VERNON HILLS | 225 | Active |
| BROOKFIELD | BROOKFIELD | 18,776 | Active |
| BROOKFIELD ZOOLOGICAL PARK | BROOKFIELD | 385 | Inactive |
| BROOKFIELD-NORTH RIVERSIDE WATER COMM. | BROOKFIELD | 1 | Active |
| BROOKPORT | BROOKPORT | 730 | Active |
| BROOKS CLARK COTTAGE | BROOKS CLARK COTTAGE | 25 | Inactive |
| BROOKVIEW SBDV | MEDINA TWP | 400 | Inactive |
| BROUGHTON WATER DISTRICT | BROUGHTON | 235 | Active |
| BROWNING | BROWNING | 117 | Active |
| BROWNSTOWN | BROWNSTOWN | 740 | Active |
| BROWNSVILLE WATER PROJECT, INC | CARMI | 800 | Active |
| BRUSSELS | BRUSSELS | 245 | Active |
| BRYANT | CUBA | 267 | Active |
| BUCK LAKE ESTATES SUBDIVISION | SOMONAUK | 150 | Active |
| BUCKHORN RANCH ESTATES MHP | DENVER | 702 | Active |
| BUCKINGHAM | BUCKINGHAM | 300 | Active |
| BUCKLEY | BUCKLEY | 600 | Active |
| BUCKNER | BUCKNER | 494 | Active |
| BUDA | PERU | 482 | Active |
| BUECHE MOBILE HOME PARK | BUECHE MOBILE HOME PARK | 25 | Inactive |
| BUECHE'S MOBILE HOME PARK | ELGIN TWP | 100 | Inactive |
| BUFFALO GROVE | BUFFALO GROVE | 43,212 | Active |
| BUFFALO HOLLOW FARMS WATER ASSOC | CHILLICOTHE | 45 | Active |
| BUNCOMBE WATER DISTRICT | CARBONDALE | 1,030 | Active |
| BUNKER HILL | BUNKER HILL | 1,760 | Active |
| BUREAU JUNCTION | PERU | 297 | Active |
| BURLINGTON | BURLINGTON | 535 | Active |
| BURNHAM | BURNHAM | 3,989 | Active |
| BURNSIDE PWD | NEW BURNSIDE | 2,702 | Active |
| BURNT PRAIRIE | BURNT PRAIRIE | 486 | Active |
| BURR RIDGE | BURR RIDGE | 11,192 | Active |
| BURT ESTATES MHC | DENVER | 543 | Active |
| BUSH | DESOTO | 285 | Active |
| BUSHNELL | BUSHNELL | 2,972 | Active |
| BUSY BEE MHP #1 | LEMONT | 25 | Active |
| BUSY BEE NO 2 MHP | LEMONT | 11 | Inactive |
| BUTLER | BUTLER | 253 | Active |
| BUYSSE SUBDIVISION | COAL VALLEY | 380 | Active |
| BYRON | BYRON | 4,743 | Active |
| BYRON HILLS PLAT 5 WELL 1 | BYRON TWP | 28 | Inactive |
| BYRON HILLS SUBD WELL #1 | BYRON HILLS SUBD WELL #1 | 25 | Inactive |
| BYRON HILLS SUBD WELL #2 | BYRON HILLS SUBD WELL #2 | 25 | Inactive |
| BYRON HILLS SUBD WELL #3 | BYRON HILLS SUBD WELL #3 | 25 | Inactive |
| BYRON HILLS SUBD WELL #4 | BYRON HILLS SUBD WELL #4 | 25 | Inactive |
| BYRON HILLS SUBD WELL #6 | BYRON HILLS SUBD WELL #6 | 25 | Inactive |
| BYRON HILLS SUBDIVISION WELL 3 | PORT BYRON | 15 | Inactive |
| BYRON HLS SBDV WELL 2 | COE TWP | 25 | Inactive |
| BYRON HLS SBDV WELL 4 | COE TWP | 25 | Inactive |
| BYRON HLS SBDV WELL 6 | COE TWP | 32 | Inactive |
| BYRON WOODS SUBDIVISION | PORT BYRON | 216 | Inactive |
| C AND A WTR CORP | NUNDA TWP | 25 | Inactive |
| CABERY | CABERY | 266 | Active |
| CAHOKIA | CAHOKIA | 4,150 | Inactive |
| CAHOKIA HEIGHTS | CAHOKIA HEIGHTS | 15,250 | Active |
| CALHOUN | CALHOUN | 172 | Active |
| CALHOUN COUNTY RWD | HARDIN | 4,675 | Active |
| CALHOUN HOUSING AUTHORITY | CALHOUN HOUSING AUTHORITY | 25 | Inactive |
| CALUMET CITY | CALUMET CITY | 37,000 | Active |
| CALUMET GARDENS-(UTILS UNLIM) | CRETE | 100 | Inactive |
| CALUMET PARK | CALUMET PARK | 8,442 | Active |
| CAMARGO | CAMARGO | 750 | Active |
| CAMBRIA | CAMBRIA | 1,727 | Active |
| CAMBRIDGE | CAMBRIDGE | 2,086 | Active |
| CAMBRIDGE COURTS MHP | NORTHBROOK | 658 | Active |
| CAMDEN-LITTLETON WATER COMMISSION | LITTLETON | 1,000 | Active |
| CAMELOT ESTATES MHP | HARWOOD TWP | 25 | Inactive |
| CAMP GROVE | CAMP GROVE | 146 | Active |
| CAMP POINT | CAMP POINT | 1,190 | Active |
| CAMPBELL HILL | CAMPBELL HILL | 414 | Active |
| CAMPBELLS WTR CORP 1 | PREEMPTION TWP | 70 | Inactive |
| CAMPUS | CAMPUS | 149 | Active |
| CANDLELIGHT VILLAGE MHP | FARMINGTON HILLS | 420 | Active |
| CANTON | CANTON | 16,748 | Active |
| CAPRON | CAPRON | 1,343 | Active |
| CAPRON MHP | WALWORTH | 90 | Active |
| CARBON CLIFF | CARBON CLIFF | 2,134 | Active |
| CARBON HILL | CARBON HILL | 370 | Active |
| CARBONDALE | CARBONDALE | 22,107 | Active |
| CARLINVILLE | CARLINVILLE | 6,598 | Active |
| CARLINVILLE HOLIDAY INN | CARLINVILLE | 25 | Inactive |
| CARLOCK | CARLOCK | 562 | Active |
| CARLYLE | CARLYLE | 3,373 | Active |
| CARLYLE NORTH WATER COMPANY, INC. | CARLYLE | 1,850 | Active |
| CARLYLE SOUTHWEST PWD | CENTRALIA | 1,815 | Active |
| CARMI | CARMI | 6,307 | Active |
| CAROL STREAM | CAROL STREAM | 39,854 | Active |
| CARPENTERSVILLE | CARPENTERSVILLE | 37,983 | Active |
| CARRIAGE WALK SBDV | UNSPEC PL IN CO | 25 | Inactive |
| CARRIER MILLS | CARRIER MILLS | 2,085 | Active |
| CARROLL HEIGHTS UTILITIES COMPANY | MT CARROLL | 80 | Active |
| CARROLLTON | CARROLLTON | 2,513 | Active |
| CARTERVILLE | CARTERVILLE | 6,484 | Active |
| CARTERVILLE WEST PWD | MARION | 231 | Inactive |
| CARTHAGE | CARTHAGE | 2,510 | Active |
| CARY | CARY | 17,826 | Active |
| CASEY | CASEY | 3,274 | Active |
| CASEYVILLE | CASEYVILLE | 13,798 | Active |
| CASS CO APALOOSA ACRES MHP | — | 25 | Inactive |
| CASS CO ROHNS MHP | — | 25 | Inactive |
| CASS RURAL WATER DISTRICT | ALEXANDER | 403 | Active |
| CASTLE PARK | CASTLE PARK | 25 | Inactive |
| CATERPILLAR TRAIL PWD | EAST PEORIA | 5,125 | Active |
| CATLIN | CATLIN | 2,380 | Active |
| CAVE-IN-ROCK | CAVE-IN-ROCK | 228 | Active |
| CEDAR BROOK ESTATES SUBDIVISION | EAST MOLINE | 450 | Active |
| CEDAR HLS HOMEOWNERS ASSN | WORTH TWP | 25 | Inactive |
| CEDAR POINT WATER COMPANY | HENNEPIN | 266 | Active |
| CEDARVILLE | CEDARVILLE | 663 | Active |
| CENTRAL ALEXANDER CNTY PWD | OLIVE BRANCH | 1,763 | Active |
| CENTRAL LAKE COUNTY JAWA | LAKE BLUFF | 0 | Active |
| CENTRAL MACOUPIN COUNTY RWD | CARLINVILLE | 1,883 | Active |
| CENTRAL STICKNEY SD | BURBANK | 2,400 | Active |
| CENTRALIA | CENTRALIA | 12,182 | Active |
| CENTRALIA CORRECTIONAL SITE | CENTRALIA | 1,397 | Active |
| CENTURY PINES APARTMENTS | MT CARROLL | 25 | Inactive |
| CERRO GORDO | CERRO GORDO | 1,433 | Active |
| CHADWICK | CHADWICK | 523 | Active |
| CHAIN-O-LAKES MHP | GRAYSLAKE | 84 | Active |
| CHAMPAIGN CO HIGH CROSS MHP | — | 25 | Inactive |
| CHAMPAIGN COUNTY LAKEWOOD GAR | CHAMPAIGN COUNTY LAKEWOOD GAR | 60 | Inactive |
| CHAMPAIGN COUNTY PLANNED COMM | CHAMPAIGN COUNTY PLANNED COMM | 153 | Inactive |
| CHAMPAIGN COUNTY PROCTOR MHP | CHAMPAIGN COUNTY PROCTOR MHP | 42 | Inactive |
| CHANDLERVILLE | CHANDLERVILLE | 838 | Active |
| CHANNAHON | CHANNAHON | 13,380 | Active |
| CHANNAHON EAST | CHANNAHON | 630 | Active |
| CHANNAHON PARKWAY STATE PARK | UNSPEC PL IN CO | 0 | Inactive |
| CHANNAHON WEST | CHANNAHON | 25 | Inactive |
| CHANNAHON-WEST(HIGHLANDS SUBDIVISION) | CHANNAHON | 0 | Inactive |
| CHANUTE AFB | RANTOUL | 100 | Inactive |
| CHAPIN | CHAPIN | 658 | Active |
| CHAPPEL SPRING | UNSPEC PL IN CO | 25 | Inactive |
| CHARLES CURTAL JR | CHARLES CURTAL JR | 25 | Inactive |
| CHARLES MELVIN PRICE SPRT CNTR | GRANITE CITY | 640 | Inactive |
| CHARLESTON | CHARLESTON | 17,286 | Active |
| CHARLOTTE HLS SBDV | ROAD DIST 53 | 62 | Inactive |
| CHATEAU ESTATES MHP | CHATEAU ESTATES MHP | 25 | Inactive |
| CHATHAM | CHATHAM | 16,423 | Active |
| CHATHAMS MOBILE HOME PARK | CHATHAMS MOBILE HOME PARK | 25 | Inactive |
| CHATSWORTH | CHATSWORTH | 1,256 | Active |
| CHEBANSE | CHEBANSE | 1,044 | Active |
| CHENOA | CHENOA | 1,785 | Active |
| CHERRY | PERU | 490 | Active |
| CHERRY ORCHARD APARTMENTS | GENEVA | 75 | Inactive |
| CHERRY VALE EAST APTS | ROCKFORD TWP | 180 | Inactive |
| CHERRY VALLEY | CHERRY VALLEY | 4,731 | Active |
| CHERRY VIEW APTS | ROCKFORD TWP | 60 | Inactive |
| CHERRYDALE SUBDIVISION | MILAN | 63 | Active |
| CHESTER | CHESTER | 8,407 | Active |
| CHESTERFIELD | CHESTERFIELD | 170 | Active |
| CHESTVIEW SUBDIVISION | CHESTVIEW SUBDIVISION | 25 | Inactive |
| CHEVY CHASE SWR & WTR CMPNY | VERNON TWP | 300 | Inactive |
| CHICAGO | CHICAGO | 2,746,388 | Active |
| CHICAGO HEIGHTS | CHICAGO HEIGHTS | 26,184 | Active |
| CHICAGO READ MHC | NORWOOD PARK TWP | 1,700 | Inactive |
| CHICAGO RIDGE | CHICAGO RIDGE | 14,130 | Active |
| CHIGAKWA PARK ESTATES | ILLINOIS CITY | 53 | Active |
| CHILLICOTHE | CHILLICOTHE | 5,996 | Active |
| CHILLION CHALET MOBILE HOMES P | CHILLION CHALET MOBILE HOMES P | 25 | Inactive |
| CHINQUAPIN RIDGE ESTATES HOMEOWNERS | ROCKVALE TWP | 24 | Inactive |
| CHOATE MHC | ANNA | 300 | Active |
| CHRISMAN | CHRISMAN | 1,273 | Active |
| CHRISTOPHER | CHRISTOPHER | 3,072 | Active |
| CHULEWINSKI F | CHULEWINSKI F | 25 | Inactive |
| CHURCH OF CHRIST | CHURCH OF CHRIST | 25 | Inactive |
| CICERO | CICERO | 83,000 | Active |
| CIPS-COFFEEN | EAST FORK TWP | 25 | Inactive |
| CISCO | CLINTON | 242 | Active |
| CISNE | CISNE | 634 | Active |
| CISSNA PARK | CISSNA PARK | 846 | Active |
| CLAREMONT | CLAREMONT | 190 | Active |
| CLARENDON HILLS | CLARENDON HILLS | 8,702 | Active |
| CLARK-EDGAR RWD | MARSHALL | 9,657 | Active |
| CLARKS MHP | ROCKFORD | 90 | Active |
| CLAY CITY | CLAY CITY | 957 | Active |
| CLAY COUNTY WATER INC | FLORA | 2,015 | Active |
| CLAYTON | CLAYTON | 709 | Active |
| CLAYTON WORK CAMP | MT. STERLING | 83 | Active |
| CLAYTON-CAMP POINT WATER COMMISSION | CAMP POINT | 2,470 | Active |
| CLEAR WATER SERVICE CORP | MATTOON | 8,900 | Active |
| CLEARVIEW SUBDIVISION | JOLIET | 305 | Inactive |
| CLIFTON | CLIFTON | 1,500 | Active |
| CLINTON | CLINTON | 7,200 | Active |
| CLINTON COUNTY EAST PWD | CENTRALIA | 1,980 | Active |
| CLINTON COUNTY KLOECKNER MH | CLINTON COUNTY KLOECKNER MH | 30 | Inactive |
| CLINTON COUNTY RENSING MHP | CLINTON COUNTY RENSING MHP | 20 | Inactive |
| CLOVER LEAF VILLAGE MHP | MOLINE | 732 | Active |
| CMNTY 1 LYNWOOD ADDN | HANNA TWP | 28 | Inactive |
| COAL CITY | COAL CITY | 5,749 | Active |
| COAL VALLEY | COAL VALLEY | 3,873 | Active |
| COAL VALLEY PWD | MARION | 3,960 | Active |
| COBDEN | COBDEN | 1,267 | Active |
| COFFEEN | AVISTON | 647 | Active |
| COLCHESTER | COLCHESTER | 1,395 | Active |
| COLEMAN TRI-CO SERVICES | COLEMAN TRI-CO SERVICES | 25 | Inactive |
| COLFAX | COLFAX | 989 | Active |
| COLLEGE VIEW SUBDIVISION | LOCKPORT | 570 | Active |
| COLLINSVILLE | COLLINSVILLE | 29,500 | Active |
| COLONA EAST | MOLINE | 2,501 | Active |
| COLONA PARK LLC - FORMERLY KERSHAW MHP | ROCKFORD | 250 | Active |
| COLONA WEST | MOLINE | 2,640 | Active |
| COLONIAL MEADOWS WATER COMPANY | BLOOMINGTON | 193 | Active |
| COLONIAL PARK APTS | WARREN TWP | 800 | Inactive |
| COLP | COLP | 506 | Active |
| COLUMBIA | COLUMBIA | 11,129 | Active |
| COMMONFIELDS OF CAHOKIA PWD | CAHOKIA | 11,030 | Inactive |
| COMMUNITY | COMMUNITY | 25 | Inactive |
| COMMUNITY WELL | COMMUNITY WELL | 25 | Inactive |
| COMPTON | COMPTON | 279 | Active |
| CONCORD | CONCORD | 295 | Active |
| CONCORD TERRACE WTR CMPNY INC | SCHAUMBURG TWP | 150 | Inactive |
| CONCORDIA WATER COOPERATIVE | JERSEYVILLE | 510 | Inactive |
| CONGERVILLE | CONGERVILLE | 497 | Active |
| CONSOLIDATED PWD | TAMAROA | 913 | Inactive |
| COOK CO COUNTRYSIDE PLAZA | — | 50 | Inactive |
| COOK CO FERNDALE HGTS SUBD | PALATINE | 11,724 | Inactive |
| COOK CO NO SHORE TOWERS CONDO | — | 180 | Inactive |
| COOK COUNTY EDGEWOOD AC | COOK COUNTY | 175 | Inactive |
| COOK COUNTY MOBILE HOMES | COOK COUNTY MOBILE HOMES | 25 | Inactive |
| COOKS MHP | OTTAWA TWP | 25 | Inactive |
| COOKS MILLS WATER ASSOCIATION | MATTOON | 720 | Active |
| COOKSVILLE | LEXINGTON | 157 | Active |
| COPELL APARTMENTS | COPELL APARTMENTS | 25 | Inactive |
| CORDIAL COURTS MHP | CORDIAL COURTS MHP | 25 | Inactive |
| CORDOVA | CORDOVA | 640 | Active |
| CORINTH PWD | PITTSBURG | 3,927 | Active |
| CORNELL | CORNELL | 500 | Active |
| CORNLAND COMM CENTER APTS | CORNLAND COMM CENTER APTS | 25 | Inactive |
| CORTLAND | CORTLAND | 4,398 | Active |
| CORTLAND CORNERS MHP | AURORA | 250 | Active |
| COTTONWOOD COVE MHP | SPELD | 358 | Active |
| COULTERVILLE | COULTERVILLE | 1,052 | Active |
| COUNTRY ACRES MHP (LA SALLE COUNTY) | DENVER | 222 | Active |
| COUNTRY ACRES MHP (WHITESIDE COUNTY) | ROCK FALLS | 232 | Active |
| COUNTRY ACRES MHP SUPPLY #2 | COUNTRY ACRES MHP SUPPLY #2 | 25 | Inactive |
| COUNTRY ACRES SUBD | COUNTRY ACRES SUBD | 25 | Inactive |
| COUNTRY AIRE MHP (JODAVIESS COUNTY) | — | 100 | Inactive |
| COUNTRY CLUB ESTATES SUBDIVISION | KEWANEE | 63 | Active |
| COUNTRY CLUB HILLS | COUNTRY CLUB HILLS | 16,500 | Active |
| COUNTRY CLUB LINE SBDV | CARLINVILLE TWP | 128 | Inactive |
| COUNTRY CLUB MANOR WELL #1 | COUNTRY CLUB MANOR WELL #1 | 25 | Inactive |
| COUNTRY CLUB MANOR WELL 1 | RURAL TWP | 25 | Inactive |
| COUNTRY CLUB MANOR WELL 2 | UNSPEC PL IN CO | 32 | Inactive |
| COUNTRY ESTATES | COUNTRY ESTATES | 25 | Inactive |
| COUNTRY ESTATES | COUNTRY ESTATES | 25 | Inactive |
| COUNTRY ESTATES SUBDIVISION | GENESEO | 188 | Active |
| COUNTRY HILLS WTR, INC. | HIGHLAND | 166 | Active |
| COUNTRY LANE MHP | DOWNS | 50 | Active |
| COUNTRY LIVING ESTATES, LLC | PORT BYRON | 50 | Inactive |
| COUNTRY LN | COUNTRY LN | 25 | Inactive |
| COUNTRY MANOR MOBILE HOME PK | COUNTRY MANOR MOBILE HOME PK | 25 | Inactive |
| COUNTRY OAKS | COUNTRY OAKS | 25 | Inactive |
| COUNTRY SIDE ESTATES MHP | DANVERS | 90 | Inactive |
| COUNTRY VIEW ESTATES | COUNTRY VIEW ESTATES | 25 | Inactive |
| COUNTRY VIEW ESTATES SUBDIVISION | LINDENWOOD | 125 | Active |
| COUNTRY VIEW ESTS MHP | URBANA | 97 | Active |
| COUNTRY VIEW MHC | PIERRON | 173 | Active |
| COUNTRYSIDE | COUNTRYSIDE | 6,420 | Active |
| COUNTRYSIDE ESTATES MHP | WHEATON | 158 | Active |
| COUNTRYSIDE LAKE SUBDIVISION -LAKE CO PW | LIBERTYVILLE | 1,287 | Active |
| COUNTRYSIDE MANOR SBDV- LAKE CO PW | LIBERTYVILLE | 1,518 | Inactive |
| COUNTRYSIDE MOBILE HOME ESTATES MHP | BLOOMFIELD HILLS | 200 | Active |
| COUNTRYSIDE WELL 2 | DOWNERS GR TWP | 30 | Inactive |
| COWDEN | COWDEN | 612 | Active |
| COX'S SUBDIVISION | COX'S SUBDIVISION | 25 | Inactive |
| COYNE CENTER COOP | MILAN | 150 | Active |
| CRAB ORCHARD ESTATES | CARBONDALE | 238 | Active |
| CRAB ORCHARD PWD | CARBONDALE | 1,773 | Inactive |
| CRAB ORCHARD REFUGE | MARION | 25 | Active |
| CRAINVILLE | CRAINVILLE | 1,711 | Active |
| CREAL SPRINGS | CREAL SPRINGS | 683 | Active |
| CRESCENT CITY | CRESCENT CITY | 650 | Active |
| CRESCENT MHP | ROCHESTER | 363 | Inactive |
| CRESCENT MOBILE ESTS MHP | HENRY TWP | 50 | Inactive |
| CREST HILL | CREST HILL | 21,169 | Active |
| CREST VIEW DR #1 | CREST VIEW DR #1 | 25 | Inactive |
| CREST VIEW DR 2 | CREST VIEW DR 2 | 25 | Inactive |
| CRESTON | CRESTON | 627 | Active |
| CRESTWICK EAST | CRESTWICK EAST | 25 | Inactive |
| CRESTWICK SOUTH | CRESTWICK SOUTH | 25 | Inactive |
| CRESTWICKE HGTS | CRESTWICKE HGTS | 25 | Inactive |
| CRESTWOOD | CRESTWOOD | 10,826 | Active |
| CRETE | CRETE | 8,275 | Active |
| CREVE COEUR | CREVE COEUR | 4,934 | Active |
| CRISWELL COURT MHP | JOLIET | 94 | Active |
| CROPPERS 1ST 4TH AND 5TH ADDITION | MILAN | 495 | Active |
| CROPPERS 2ND & 3RD ADDN | BLACKHAWK TWP | 25 | Inactive |
| CROPSEY MUTUAL WATER ASSOCIATION | LINCOLN | 65 | Active |
| CROSSROADS MHP | MATHER | 53 | Active |
| CROSSVILLE | CROSSVILLE | 1,091 | Active |
| CRYSTAL HEIGHTS ASSOCIATION | CRYSTAL LAKE | 0 | Inactive |
| CRYSTAL LAKE | CRYSTAL LAKE | 40,661 | Active |
| CRYSTAL LAWNS ADDITION IMPROVEMENT ASSOC | JOLIET | 1,435 | Active |
| CTZNS PLEASANT HILL DVN | MILTON TWP | 177 | Inactive |
| CUBA | CUBA | 1,184 | Active |
| CULES CO NEES SUBD | ASHAMORE | 34 | Inactive |
| CULLOM | CULLOM | 563 | Active |
| CUMBERLAND CO AGRO LAB | CUMBERLAND CO AGRO LAB | 25 | Inactive |
| CURRAN-GARDNER TOWNSHIP PWD | SPRINGFIELD | 6,651 | Active |
| CUTLER | CUTLER | 463 | Active |
| D AND R APTS | CHAMPAIGN | 25 | Inactive |
| DAHLGREN | DAHLGREN | 859 | Active |
| DAKOTA | DAKOTA | 500 | Active |
| DALE PWD | DALE | 325 | Inactive |
| DALLAS CITY | DALLAS CITY | 788 | Active |
| DALLAS RURAL WATER DISTRICT | HAMILTON | 6,370 | Active |
| DALTON CITY | DALTON CITY | 454 | Active |
| DALZELL | PERU | 663 | Active |
| DAMIANSVILLE | DAMIANSVILLE | 602 | Active |
| DANA/LONG POINT, READING, ANCONA RWD | BELLEVILLE | 126 | Inactive |
| DANFORTH | DANFORTH | 550 | Active |
| DANVERS | DANVERS | 1,183 | Active |
| DANVILLE CRCTNL CNTR | DANVILLE | 1,930 | Inactive |
| DARIEN | DARIEN | 21,751 | Active |
| DAVIS | DAVIS | 589 | Active |
| DAVIS JUNCTION | DAVIS JUNCTION | 2,344 | Active |
| DAWSON | DAWSON | 2,375 | Active |
| DAYSPRING BIBLE COLLEGE | LAKE ZURICH | 30 | Active |
| DAYTON VALLEY VIEW | DAYTON VALLEY VIEW | 25 | Inactive |
| DAYTONS VALLEY VIEW WELL 1 | COLONA TWP | 25 | Inactive |
| DE LAND | WESTVILLE | 446 | Active |
| DE PUE | DEPUE | 1,838 | Active |
| DE SOTO | DESOTO | 1,910 | Active |
| DE WITT | CLINTON | 175 | Active |
| DE WITT COUNTY NURSING HOME | DE WITT COUNTY NURSING HOME | 25 | Inactive |
| DE WITT COUNTY NURSING HOME | CLINTON | 83 | Inactive |
| DEAN'S FIRST ADDN SUBDIVISION | DEAN'S FIRST ADDN SUBDIVISION | 25 | Inactive |
| DEARBORN MHP | HINSDALE | 24 | Inactive |
| DECATUR | DECATUR | 76,122 | Active |
| DECATUR MHP, LLC | CEDAREDGE | 500 | Active |
| DECATUR TRAILOR RANCH MHP | DECATUR | 25 | Inactive |
| DEER CREEK | DEER CREEK | 647 | Active |
| DEER RIDGE | DEER RIDGE | 25 | Inactive |
| DEERFIELD | DEERFIELD | 19,196 | Active |
| DEERING OAKS SUBDIVISION | LIBERTYVILLE | 3 | Inactive |
| DEERWOOD ESTATES | INDIANOLA | 176 | Active |
| DEKALB | DEKALB | 45,000 | Active |
| DEL MONTE CORP-PLANT 109 | ROCHELLE | 25 | Inactive |
| DEL MONTE CORP-PLANT 199 | OGLE | 25 | Inactive |
| DELABAR STATE PARK | OQUAWKA TWP | 25 | Inactive |
| DELAVAN | DELAVAN | 1,743 | Active |
| DELUXE LAKE ESTATES MHP | FARMINGTON | 325 | Active |
| DELUXE MHP | PEORIA TWP | 97 | Inactive |
| DELUXE MOBILE HOME PARK B | DELUXE MOBILE HOME PARK B | 25 | Inactive |
| DELUXE MOBILE HOME PARK C | DELUXE MOBILE HOME PARK C | 25 | Inactive |
| DERBY GLEN HMOWNR ASSN | MILTON TWP | 25 | Inactive |
| DERRICKS ADDITION #1 | DERRICKS ADDITION #1 | 25 | Inactive |
| DES PLAINES | DES PLAINES | 60,675 | Active |
| DES PLAINES MHP | DESPLAINES | 405 | Active |
| DEVILS KITCHEN WATER DISTRICT | CARBONDALE | 1,428 | Active |
| DHS RUSHVILLE TREATMENT AND DETENTION | RUSHVILLE | 565 | Active |
| DIAMOND | DIAMOND | 2,508 | Active |
| DIAMOND LAKE MHP | MUNDELIN | 198 | Active |
| DIETERICH | DIETERICH | 900 | Active |
| DIVERNON | DIVERNON | 1,172 | Active |
| DIVINE WORD SEMINARY | NORTHFIELD TWP | 105 | Inactive |
| DIX-KELL WATER COMMSSION | DIX | 1,972 | Active |
| DIXIE DELLS | UNIVERSITY PARK | 558 | Inactive |
| DIXIE ESTATES SUBDIVISION | BEECHER | 180 | Active |
| DIXMOOR | DIXMOOR | 2,973 | Active |
| DIXON | DIXON | 15,096 | Active |
| DIXON CORRECTIONAL CENTER | DIXON | 1,038 | Active |
| DIXON MHP | DIXON MHP | 25 | Inactive |
| DIXON SPRINGS AGR CENTER | ROAD DIST 2 | 45 | Inactive |
| DIXON SPRINGS IMPACT INCAR PGM | ROAD DIST 2 | 170 | Inactive |
| DOLTON | DOLTON | 20,510 | Active |
| DON FORTNER SUBDIVISION | DON FORTNER SUBDIVISION | 25 | Inactive |
| DON RON TRAILER MHP | UNSPEC PL IN CO | 25 | Inactive |
| DONGOLA | DONGOLA | 752 | Active |
| DONMAR MOBILE HOME ACESSORIES | DONMAR MOBILE HOME ACESSORIES | 25 | Inactive |
| DONNELLSON | DONNELLSON | 213 | Active |
| DONNY BROOK ESTATES SUBDIVISION | DEKALB | 30 | Active |
| DONOVAN | DONOVAN | 279 | Active |
| DORCHESTER | DORCHESTER | 562 | Active |
| DOUBLE H MOBILE HOME PARK | DOUBLE H MOBILE HOME PARK | 25 | Inactive |
| DOUGLAS CO LAKEWOOD ESTS SUBD | — | 84 | Inactive |
| DOUGLAS COUNTY HOKE MHP | DOUGLAS COUNTY HOKE MHP | 27 | Inactive |
| DOUGLAS WOODS SBDV | UNSPEC PL IN CO | 25 | Inactive |
| DOVER | PRINCETON | 200 | Active |
| DOWELL | DOWELL | 1,188 | Active |
| DOWNERS GROVE | DOWNERS GROVE | 49,425 | Active |
| DOWNS | DOWNS | 1,201 | Active |
| DOYLES 1ST ADDN | BUFFALO PR TWP | 25 | Inactive |
| DU PAGE COUNTY BLACKHAWK H | DU PAGE COUNTY BLACKHAWK H | 1,020 | Inactive |
| DU PAGE COUNTY GARY AVENUE | DU PAGE COUNTY GARY AVENUE | 84 | Inactive |
| DU PAGE COUNTY TIMBER TRAI | DU PAGE COUNTY | 500 | Inactive |
| DU PAGE WATER COMMISSION | ELMHURST | 1 | Active |
| DUBOIS | NASHVILLE | 200 | Active |
| DUCK LAKE WELL OWNERS ASSOCIATION | INGLESIDE | 141 | Active |
| DUGAN RD COMMUNITY WELL | DUGAN RD COMMUNITY WELL | 25 | Inactive |
| DUNFERMLINE-ST DAVID WATER COMMISSION | ST DAVID | 850 | Active |
| DUNHILL SUBD | UNSPEC PL IN CO | 25 | Inactive |
| DUNLAP | DUNLAP | 1,603 | Active |
| DUNLAP WTR CMPNY | WABASH TWP | 104 | Inactive |
| DUPAGE CNTY CARE UNIT | UNSPEC PL IN CO | 25 | Inactive |
| DUPO | DUPO | 4,684 | Active |
| DUQUOIN | DUQUOIN | 7,169 | Active |
| DURAND | DURAND | 1,427 | Active |
| DURK'S | DURK'S | 2 | Inactive |
| DWIGHT | DWIGHT | 4,400 | Active |
| DWIGHT CORRECTIONAL CENTER | PONTIAC | 24 | Inactive |
| EAGARVILLE | EAGARVILLE | 127 | Active |
| EARL E FULLER | EARL E FULLER | 25 | Inactive |
| EARLS MOBILE HOME PARK | EARLS MOBILE HOME PARK | 25 | Inactive |
| EARLVILLE | EARLVILLE | 1,613 | Active |
| EARLVILLE MHP | EARL TWP | 78 | Inactive |
| EAST 30 MHP | CROFTON | 218 | Active |
| EAST ALTON | EAST ALTON | 5,786 | Active |
| EAST BROOKLYN | UNSPEC PL IN CO | 140 | Inactive |
| EAST DUBUQUE | EAST DUBUQUE | 1,565 | Active |
| EAST DUNDEE | EAST DUNDEE | 3,115 | Active |
| EAST END TRC VALLEY DR | — | 25 | Inactive |
| EAST END WATER ASSOCIATION | TAYLOR RIDGE | 40 | Active |
| EAST GALESBURG | EAST GALESBURG | 860 | Active |
| EAST HAZEL CREST | EAST HAZEL CREST | 1,500 | Active |
| EAST LAWN WATER ASSOCIATION | EAST MOLINE | 160 | Active |
| EAST LYNN COMMUNITY WATER SYSTEM | EAST LYNN | 112 | Active |
| EAST MOLINE | EAST MOLINE | 21,374 | Active |
| EAST MOLINE CORRECTIONAL CENTER | EAST MOLINE | 500 | Active |
| EAST MORELAND WATER CORPORATION | JOLIET | 135 | Inactive |
| EAST MORELAND WTR SERVICE ASSN | JOLIET | 1,320 | Active |
| EAST PEORIA | EAST PEORIA | 22,284 | Active |
| EAST PEORIA-VALLEY VIEW KNOLLS 4 AND 6 | EAST PEORIA | 230 | Inactive |
| EAST PORTAL WTR SYS | COLONA TWP | 795 | Inactive |
| EAST RIDGE APTS | ROCKFORD | 30 | Inactive |
| EAST SIDE MHP | RANTOUL | 79 | Active |
| EAST SIDE WTR ASSN | SALEM TWP | 155 | Inactive |
| EASTERN ILLINOIS UNIVERSITY | CHARLESTON | 5,500 | Active |
| EASTON | EASTON | 334 | Active |
| EASTSIDE WATER ASSOCIATION | ROAD DIST 4 | 25 | Inactive |
| EASY BREEZE MANUFACTURED HOME PARK | SANFORD | 108 | Active |
| EATON PWD | ANNAPOLIS | 1,655 | Active |
| EBERTS 2ND ADDN | BLACKHAWK TWP | 25 | Inactive |
| EBERTS 3RD ADDITION | MILAN | 99 | Active |
| ECHO LAKE BLOCK IV WTR ASSN | ELA TWP | 25 | Inactive |
| ECHO LAKE WATER SYSTEM BLOCK 7 | LAKE ZURICH | 40 | Inactive |
| ECKSTROMS 1ST ADDN | BOWLING TWP | 28 | Inactive |
| EDELSTEIN WATER COOP | EAST PEORIA | 113 | Active |
| EDEN PWD | SPARTA | 328 | Inactive |
| EDENFRUIT | POPLAR GROVE TWP | 24 | Inactive |
| EDGEBROOK MHP | EDGEBROOK MHP | 25 | Inactive |
| EDGEWOOD | EDGEWOOD | 440 | Active |
| EDGEWOOD MOBILE HOME COURT (MHC) | OVIEDO | 92 | Active |
| EDGINGTON WATER DISTRICT | TAYLOR RIDGE | 391 | Active |
| EDINBURG | EDINBURG | 1,068 | Active |
| EDWARD HINES JR V A HOSPITAL | HINES | 60 | Active |
| EDWARDSVILLE | EDWARDSVILLE | 26,808 | Active |
| EFFINGHAM | EFFINGHAM | 12,252 | Active |
| EFFINGHAM CO FUNNEMAN SUBD | TEUTOPOLIS | 42 | Inactive |
| EGYPTIAN TRAIL WATER CORP | ARTHUR | 64 | Active |
| EGYPTIAN WATER COMPANY | NASHVILLE | 2,330 | Active |
| EHLERS MHP | URBANA | 112 | Active |
| EILEEN | EILEEN | 569 | Inactive |
| EJ WATER COOPERATIVE | DIETERICH | 29,720 | Active |
| EJ WATER-COALTON | DIETERICH | 317 | Active |
| EJ WATER-DEWEY | DIETERICH | 350 | Active |
| EJ WATER-MCWC | DIETERICH | 2,075 | Active |
| EJ WATER-MONTROSE | DIETERICH | 201 | Active |
| EJ WATER-NIANTIC | DIETERICH | 648 | Active |
| EJ WATER-SANGCHRIS | DIETERICH | 1,025 | Active |
| EJ WATER-WATSON | DIETERICH | 754 | Active |
| EJ WATER-WITT | DIETERICH | 785 | Active |
| EKSTROMS SUBDIVISION | EKSTROMS SUBDIVISION | 25 | Inactive |
| EL PASO | EL PASO | 2,812 | Active |
| EL RANCHO VISTAESTS MHP | RIVERSIDE TWP | 224 | Inactive |
| ELBURN | ELBURN | 6,559 | Active |
| ELDORADO | ELDORADO | 4,715 | Active |
| ELDRED | ELDRED | 211 | Active |
| ELGIN | ELGIN | 114,797 | Active |
| ELGIN MHC | ELGIN TWP | 2,074 | Inactive |
| ELIZABETH | ELIZABETH | 802 | Active |
| ELIZABETHTOWN | ELIZABETHTOWN | 220 | Active |
| ELJR DEVELOPMENT CORP | ELJR DEVELOPMENT CORP | 25 | Inactive |
| ELK GROVE VILLAGE | ELK GROVE VILLAGE | 34,700 | Active |
| ELKHART | ELKHART | 565 | Active |
| ELKVILLE | ELKVILLE | 1,068 | Active |
| ELLERY WATER CORP | ALBION | 2,380 | Active |
| ELLIOTT | ELLIOTT | 269 | Active |
| ELLIS GROVE | ELLIS GROVE | 403 | Active |
| ELLSWORTH | ELLSWORTH | 200 | Active |
| ELM OAK MUTUAL WATER SYSTEM | LAKE FOREST | 50 | Active |
| ELMHURST | ELMHURST | 45,000 | Active |
| ELMWOOD | ELMWOOD | 2,058 | Active |
| ELMWOOD PARK | ELMWOOD PARK | 25,000 | Active |
| ELVASTON | ELVASTON | 165 | Active |
| ELVERADO WATER DISTRICT | VERGENNES | 763 | Active |
| ELWOOD | ELWOOD | 2,229 | Active |
| EMBARRAS AREA WATER DISTRICT | CHARLESTON | 3,750 | Active |
| EMDEN | EMDEN | 467 | Active |
| EMINGTON | EMINGTON | 120 | Active |
| ENCHANTED VILLAGE | FARMINGTON HILLS | 720 | Active |
| ENERGY | ENERGY | 984 | Active |
| ENFIELD | ENFIELD | 1,064 | Active |
| ENGLISH RIDGE DVLPMNT | ELA TWP | 500 | Inactive |
| EQUALITY | EQUALITY | 652 | Active |
| ERICKSON RACHAEL | ERICKSON RACHAEL | 25 | Inactive |
| ERIE | ERIE | 1,600 | Active |
| ESQUIRE ESTATES MHP | PEORIA | 9 | Inactive |
| EUREKA | EUREKA | 5,216 | Active |
| EVANSTON | EVANSTON | 74,486 | Active |
| EVANSVILLE | EVANSVILLE | 660 | Active |
| EVERGREEN MHP | DEKALB | 0 | Inactive |
| EVERGREEN PARK | EVERGREEN PARK | 19,943 | Active |
| EVERGREEN VILLAGE SUBDIVISION | EAST MOLINE | 56 | Active |
| EVERGREEN WILDWOOD MOBILE HOME PARK | PITTSBURGH | 230 | Active |
| EWING-INA WATER COMMISSION | WHITTINGTON | 2,393 | Active |
| EXETER-MERRITT WATER COOP | WINCHESTER | 820 | Active |
| EXPRESSWAY MHP | QUINCY | 98 | Active |
| F GLENN MINER | F GLENN MINER | 25 | Inactive |
| FAHNSTOCK COURT SUBDIVISION | PEORIA | 24 | Inactive |
| FAIR ACRES SUBDIVISION | JOLIET | 156 | Inactive |
| FAIRACRES ASSOCIATION | SILVIS | 200 | Inactive |
| FAIRBURY | FAIRBURY | 3,633 | Active |
| FAIRFIELD | FAIRFIELD | 6,202 | Active |
| FAIRFIELD ROAD ADDN | COE TWP | 25 | Inactive |
| FAIRMOUNT | FAIRMOUNT | 690 | Active |
| FAIRVIEW | CUBA | 588 | Active |
| FAIRVIEW HOUSE APTS | FAIRVIEW HOUSE APTS | 25 | Inactive |
| FAIRVIEW LOUNGE & MOTEL | FAIRVIEW LOUNGE & MOTEL | 25 | Inactive |
| FAIRWAY ESTS APTS | NAMEOKI TWP | 120 | Inactive |
| FAIRWAY GROVE APTS | LISLE TWP | 300 | Inactive |
| FALCON FARMS | PORT BYRON | 350 | Active |
| FAMILY MANUFACTURED HOME COMMUNITY, LLC | WINFIELD | 240 | Inactive |
| FAR HILLS SBDV | WAYNE TWP | 175 | Inactive |
| FARINA | FARINA | 540 | Active |
| FARMER CITY | FARMER CITY | 2,055 | Active |
| FARMERSVILLE | FARMERSVILLE | 784 | Active |
| FAWN HILLS SUBDIVISION | CHILLICOTHE | 183 | Active |
| FAYETTE WATER COMPANY | BROWNSTOWN | 5,608 | Active |
| FAYETTEVILLE | SWANSEA | 441 | Active |
| FCI-MARION | MARION | 1,544 | Active |
| FDL CRCTL INST & PRSN CMP | GREENVILLE | 1,300 | Inactive |
| FELLOWSHIP BAPTIST COLLEGE | UNSPEC PL IN CO | 25 | Inactive |
| FERGES WATER DISTRICT | MARION | 1,185 | Active |
| FERMI NTL ACCL LAB- D-0 AREA | WINFIELD TWP | 100 | Inactive |
| FERMI NTL ACCL LAB- MAIN SITE | WINFIELD TWP | 2,000 | Inactive |
| FERMI NTL ACCL LAB- VLG | WINFIELD TWP | 430 | Inactive |
| FERROUS WATER ASSOCIATION | COAL VALLEY | 23 | Inactive |
| FIELDON | FIELDON | 186 | Active |
| FIELDS HILL IMPROVEMENT ASSOCIATION | OTTAWA | 312 | Active |
| FIELDS OF LONG GROVE | LONG GROVE | 267 | Active |
| FILLMORE | FILLMORE | 313 | Active |
| FINDLAY | FINDLAY | 750 | Active |
| FITHIAN | FITHIAN | 485 | Active |
| FLANAGAN | FLANAGAN | 1,110 | Active |
| FLAT ROCK | FLAT ROCK | 325 | Active |
| FLORA | FLORA | 5,233 | Active |
| FLOSSMOOR | FLOSSMOOR | 9,371 | Active |
| FLYING W ESTATES | FLYING W ESTATES | 25 | Inactive |
| FLYING W ESTS WTR ASSN | EMPIRE TWP | 26 | Inactive |
| FMC WATER COMPANY | ODIN | 2,945 | Active |
| FORD HEIGHTS | FORD HEIGHTS | 1,813 | Active |
| FOREST CITY | GREEN VALLEY | 222 | Active |
| FOREST HLS SBDV | CARLINVILLE TWP | 114 | Inactive |
| FOREST HOMES-MAPLE PARK PWD | COTTAGE HILLS | 2,000 | Inactive |
| FOREST LAKE ADDITION - LAKE CO PW | LIBERTYVILLE | 225 | Active |
| FOREST PARK | FOREST PARK | 14,340 | Active |
| FOREST VIEW | FOREST VIEW | 800 | Active |
| FOREST VIEW MHP | LOVES PARK | 650 | Active |
| FOREST VIEW WATER SYSTEM | FOREST VIEW WATER SYSTEM | 25 | Inactive |
| FOREST VIEW WATER SYSTEM | FOREST VIEW WATER SYSTEM | 25 | Inactive |
| FORGE AT THE LAKE | METAMORE | 387 | Active |
| FORMOSA PLASTICS | ILLIOPOLIS | 1 | Inactive |
| FORREST | FORREST | 1,225 | Active |
| FORREST PARK MHP | SPELD | 352 | Active |
| FORRESTON | FORRESTON | 1,338 | Active |
| FORSYTH | FORSYTH | 3,490 | Active |
| FORT MASSAC PWD | METROPOLIS | 6,290 | Active |
| FOSSIL ROCK RECREATION AREA | CHICAGO | 0 | Inactive |
| FOSTERBURG PWD | ALTON | 7,940 | Active |
| FOUNTAIN VALLEY MHP | RANTOUL | 375 | Active |
| FOUNTAIN WATER DISTRICT | VALMEYER | 3,650 | Active |
| FOUR LAKES SUBDIVISION | MARSEILLES | 12 | Inactive |
| FOUR LAKES VLG CONDO ASSN 1 | LISLE TWP | 1,200 | Inactive |
| FOUR LAKES VLG SBDV | LISLE TWP | 2,600 | Inactive |
| FOUR SEASONS 2000 ADDN | BELVIDERE | 578 | Inactive |
| FOUR SEASONS MHP | PROVO | 1,468 | Active |
| FOUR SEASONS MHP | PEORIA | 270 | Inactive |
| FOUR SEASONS MHP | LIMESTONE TWP | 150 | Inactive |
| FOUR STAR CAMPGROUND | MARSEILLES | 250 | Active |
| FOX CREEK FARMS WATER COMPANY | BRIMFIELD | 203 | Active |
| FOX LAKE | INGLESIDE | 11,780 | Active |
| FOX LAKE HILLS SUBDIVISION - LAKE CO PW | LIBERTYVILLE | 2,628 | Active |
| FOX LAKE PLANT 2 | CARY | 3,600 | Inactive |
| FOX LAWN HOMEOWNERS WATER ASSOCIATION | YORKVILLE | 167 | Active |
| FOX POINT MOBILE HOME PARK | FOX POINT MOBILE HOME PARK | 25 | Inactive |
| FOX RIVER GROVE | FOX RIVER GROVE | 4,702 | Active |
| FRANCISCAN SISTERS OF CHICAGO | LEMONT | 505 | Active |
| FRANK DUNBAR | FRANK DUNBAR | 25 | Inactive |
| FRANKFORT | FRANKFORT | 24,000 | Active |
| FRANKFORT E HICKORY CRK BASIN | FRANKFORT TWP | 10,900 | Inactive |
| FRANKFORT SQUARE SBDV | FRANKFORT TWP | 6,200 | Inactive |
| FRANKLIN | FRANKLIN | 800 | Active |
| FRANKLIN GROVE | FRANKLIN GROVE | 896 | Active |
| FRANKLIN GROVE HLTH CARE CNTR | CHINA TWP | 170 | Inactive |
| FRANKLIN PARK | FRANKLIN PARK | 18,467 | Active |
| FRAZIER ACRES MHP | SCOTT TWP | 35 | Inactive |
| FREEBURG | FREEBURG | 4,707 | Active |
| FREEMAN SPUR | FREEMAN SPUR | 373 | Active |
| FREEMAN UNITED CROWN MINE 2 | FREEMAN UNITED CROWN MINE 2 | 25 | Inactive |
| FREEPORT | FREEPORT | 23,930 | Active |
| FRENTRESS LAKE | EAST DUBUQUE | 233 | Active |
| FRIENDLY CORNERS WTR ASSN | BOWLING TWP | 32 | Inactive |
| FRIENDSHIP FARM RD WELL #1 | FRIENDSHIP FARM RD WELL #1 | 25 | Inactive |
| FRIENDSHIP FARM RD WELL #2 | FRIENDSHIP FARM RD WELL #2 | 25 | Inactive |
| FSH WATER COMMISSION | FREEBURG | 313 | Active |
| FULTON | FULTON | 3,346 | Active |
| FULTON COUNTY SCEINIC VIEW | FULTON COUNTY SCEINIC VIEW | 90 | Inactive |
| FUNNEMAN SUBDIVISION | FUNNEMAN SUBDIVISION | 25 | Inactive |
| FYRE LAKE WATER COMPANY | SHERRARD | 760 | Active |
| G W HARTMAN FIRST ADDN | URBANA | 25 | Inactive |
| GALATIA | GALATIA | 887 | Active |
| GALENA | GALENA | 3,308 | Active |
| GALENA KNOLLS SBDV | MEDINA TWP | 273 | Inactive |
| GALESBURG | GALESBURG | 31,620 | Active |
| GALESBURG MHC | — | 2,015 | Inactive |
| GALLATIN-WHITE WATER DISTRICT | NORRIS CITY | 1,370 | Active |
| GALVA | GALVA | 2,449 | Active |
| GANGL | GANGL | 25 | Inactive |
| GARDEN HOME SD | GARDEN HOMES | 1,472 | Active |
| GARDEN STREET IMPROVEMENT ASSOCIATION | JOLIET | 54 | Active |
| GARDNER | GARDNER | 1,361 | Active |
| GARRETT | ATWOOD | 198 | Active |
| GASLITE COURT MHC | ENGLEWOOD | 148 | Active |
| GATEWAY MHP | FRANKFORT | 884 | Active |
| GATEWAY REGIONAL WATER COMPANY | SANDOVAL | 1 | Active |
| GENDA FORREST VIEW MHP | GENDA FORREST VIEW MHP | 25 | Inactive |
| GENESEO | GENESEO | 6,539 | Active |
| GENESEO HICKORY HILLS HOA | GENESEO | 83 | Active |
| GENESEO HILLS SUBDIVISION | GENESEO | 500 | Active |
| GENEVA | GENEVA | 21,247 | Active |
| GENOA | GENOA | 5,298 | Active |
| GEORGE HANKS | GEORGE HANKS | 25 | Inactive |
| GEORGETOWN | GEORGETOWN | 4,200 | Active |
| GERALD CURRY | GERALD CURRY | 25 | Inactive |
| GERMAN VALLEY | GERMAN VALLEY | 463 | Active |
| GERMANTOWN | GERMANTOWN | 1,537 | Active |
| GIANNIS MHP | CRETE | 11 | Inactive |
| GIBSON CITY | GIBSON CITY | 3,500 | Active |
| GIDEONSEN'S MOBILE HOME COURT | GIDEONSEN'S MOBILE HOME COURT | 25 | Inactive |
| GIFFORD | GIFFORD | 911 | Active |
| GILBERTS | GILBERTS | 8,366 | Active |
| GILLESPIE | GILLESPIE | 3,737 | Active |
| GILMAN | GILMAN | 1,793 | Active |
| GIRARD | GIRARD | 1,885 | Active |
| GLADSTONE | GLADSTONE | 387 | Active |
| GLEN ACRES TRAILER PARK | GLEN ACRES TRAILER PARK | 25 | Inactive |
| GLEN CARBON | GLEN CARBON | 12,618 | Active |
| GLEN EDEN ESTATES HOMEOWNERS ASSOCIATION | NORWOOD PARK TOWNSHIP | 312 | Active |
| GLEN ELLYN | GLEN ELLYN | 28,850 | Active |
| GLEN ELLYN HEIGHTS SUBDIVISION | DARIEN | 1,931 | Active |
| GLENBROOK SD | TECHNY | 822 | Active |
| GLENCOE | GLENCOE | 8,849 | Active |
| GLENDALE HEIGHTS | GLENDALE HEIGHTS | 33,176 | Active |
| GLENDALE MHP | DANVILLE TWP | 0 | Inactive |
| GLENDALE WATER ASSOCIATION | SILVIS | 0 | Inactive |
| GLENKIRK CAMPUS SOUTH | FREMONT TWP | 25 | Inactive |
| GLENSTONE SBDV HOA | LONG GROVE | 65 | Active |
| GLENVIEW | GLENVIEW | 47,856 | Active |
| GLENVIEW NAVAL AIR STATION | NORTHFIELD TWP | 1,500 | Inactive |
| GLENWOOD | GLENWOOD | 8,956 | Active |
| GLENWOOD - OUTBACK | MARSEILLES | 25 | Inactive |
| GLORIANE ACRES WTR ASSN | CINCINNATI TWP | 198 | Inactive |
| GODAIR HOMES | DOWNERS GR TWP | 230 | Inactive |
| GODLEY PUBLIC WATER DISTRICT | GODLEY | 566 | Active |
| GODLOWSKI RON | GODLOWSKI RON | 25 | Inactive |
| GOLCONDA | GOLCONDA | 630 | Active |
| GOLDEN | GOLDEN | 620 | Active |
| GOLDEN ACRES WELL 1 | BLACKHAWK TWP | 25 | Inactive |
| GOLDEN GATE | GOLDEN GATE | 71 | Inactive |
| GOLDIE B FLOBERG CNTR | ROCKTON TWP | 55 | Inactive |
| GOLF | GOLF | 497 | Active |
| GOLF GREENWOOD IMPROVEMENT ASSOCIATION | DES PLAINES | 219 | Inactive |
| GOOD HOPE | GOOD HOPE | 536 | Active |
| GOOD SAMARITAN PONTIAC | PONTIAC | 118 | Inactive |
| GOOD SAMARITAN RETREAT CENTER | GOOD SAMARITAN RETREAT CENTER | 25 | Inactive |
| GOOD SHEPHERD MANOR | MOMENCE | 12 | Inactive |
| GOODFIELD | GOODFIELD | 936 | Active |
| GOREVILLE | GOREVILLE | 1,068 | Active |
| GORHAM | GORHAM | 1,143 | Active |
| GRAFTON | GRAFTON | 775 | Inactive |
| GRAHAM CORRECTIONAL SITE | TAYLORVILLE | 2,155 | Active |
| GRAND RIDGE | GRAND RIDGE | 515 | Active |
| GRAND TOWER | GRAND TOWER | 559 | Active |
| GRAND VALLEY VILLAGE MHP | SPRINGFIELD | 912 | Active |
| GRANDVIEW | SPRINGFIELD | 1,405 | Active |
| GRANDWOOD PARK SUBDIVISION - LAKE CO PW | LIBERTYVILLE | 5,751 | Active |
| GRANT PARK | KANKAKEE | 1,400 | Inactive |
| GRANTFORK | HIGHLAND | 1,766 | Active |
| GRANVILLE | GRANVILLE | 1,359 | Active |
| GRAYSLAKE | GRAYSLAKE | 21,248 | Active |
| GRAYVILLE | GRAYVILLE | 1,613 | Active |
| GREAT LAKES NAVAL TRAINING STATION | GREAT LAKES | 23,000 | Active |
| GREAT OAKS AND BEACON HILLS APARTMENTS | BLOOMFIELD HILLS | 2,420 | Inactive |
| GREEN ACRES APTS | GREEN ACRES APTS | 25 | Inactive |
| GREEN ACRES MHP | COLORADO SPRINGS | 170 | Active |
| GREEN ACRES SUBDIVISION | GREEN ACRES SUBDIVISION | 25 | Inactive |
| GREEN GIANT PACKING CMPNY | BELVIDERE | 25 | Inactive |
| GREEN MEADOW ESTATES OF ROCKFORD LLC | KNOXVILLE | 250 | Active |
| GREEN OAKS | GREEN OAKS | 1,470 | Active |
| GREEN RIVER WELL 5 | COLONA TWP | 25 | Inactive |
| GREEN VALLEY | GREEN VALLEY | 638 | Active |
| GREENE CNTY WORK CAMP | WHITE HALL | 2,800 | Inactive |
| GREENE COUNTY RWD | CARROLLTON | 3,786 | Active |
| GREENFIELD | GREENFIELD | 1,097 | Active |
| GREENFIELD CMNTY WELL CMPNY | JOLIET TWP | 25 | Inactive |
| GREENUP | GREENUP | 1,513 | Active |
| GREENVIEW | GREENVIEW | 778 | Active |
| GREENVIEW ESTATES MHP | BELVIDERE | 710 | Active |
| GREENVILLE | GREENVILLE | 8,310 | Active |
| GREENWOOD-CREEK NATION WATER COMPANY | MULKEYTOWN | 2,530 | Active |
| GRIDLEY | GRIDLEY | 1,411 | Active |
| GRIGGSVILLE | GRIGGSVILLE | 1,097 | Active |
| GROVELAND TOWNSHIP WATER DISTRICT | GROVELAND | 2,185 | Active |
| GRUNDY COUNTY RIDGECREST | GRUNDY COUNTY RIDGECREST | 65 | Inactive |
| GUNFLINT SBDV | BLOUNT TWP | 25 | Inactive |
| GUNFLINT SUBDIVISION | GUNFLINT SUBDIVISION | 25 | Inactive |
| GURNEE | GURNEE | 30,193 | Active |
| H CARLSON | H CARLSON | 25 | Inactive |
| H T WTR CORP | JUBILEE TWP | 25 | Inactive |
| HAFER WATER DISTRICT SYSTEM | FREEMAN SPUR | 226 | Inactive |
| HAINESVILLE | VOLO | 3,528 | Active |
| HALEN HTS ADDN | BLACKHAWK TWP | 25 | Inactive |
| HAMEL | HAMEL | 1,087 | Active |
| HAMILTON | HAMILTON | 2,753 | Active |
| HAMILTON COUNTY WATER DISTRICT | MCLEANSBORO | 3,958 | Active |
| HAMMOND | HAMMOND | 478 | Active |
| HAMPSHIRE | HAMPSHIRE | 7,758 | Active |
| HAMPTON | HAMPTON | 1,863 | Active |
| HANAFORD | LOGAN | 883 | Active |
| HANNA CITY | HANNA CITY | 1,253 | Active |
| HANNA CITY WORK CAMP | ROSEFIELD TWP | 285 | Inactive |
| HANOVER | HANOVER | 863 | Active |
| HANOVER PARK | HANOVER PARK | 37,470 | Active |
| HARBOR LITES-PISTAKEE FSHG CL | CHICAGO | 132 | Active |
| HARBOR POINT ESTATES MHP | NORTHBROOK | 950 | Active |
| HARDIN CNTY PBLC WORK PRGM | UNSPEC PL IN CO | 200 | Inactive |
| HARDIN COUNTY WATER DISTRICT NO.1 | CAVE IN ROCK | 843 | Active |
| HARDING ROAD APARTMENTS | — | 25 | Inactive |
| HARDINVILLE WATER COMPANY | ROBINSON | 3,403 | Active |
| HARMON | HARMON | 111 | Active |
| HARMONY ACRES MHP | CHALMERS TWP | 25 | Inactive |
| HARRISBURG | HARRISBURG | 8,524 | Active |
| HARRISTOWN | DECATUR | 1,320 | Active |
| HARTFORD | HARTFORD | 1,260 | Active |
| HARTSBURG | HARTSBURG | 262 | Active |
| HARVARD | HARVARD | 9,469 | Active |
| HARVARD HILLS WATER CORPORATION | WASHINGTON | 215 | Active |
| HARVEL | HARVEL | 191 | Active |
| HARVEST ESTATES (FORMERLY BILLS MHP) | DENVER | 40 | Active |
| HARVEY | HARVEY | 25,000 | Active |
| HARWOOD HEIGHTS | HARDWOOD HEIGHTS | 9,065 | Active |
| HAVANA | HAVANA | 2,963 | Active |
| HAWTHORN ESTATES SUBDIVISION | MORRIS | 49 | Active |
| HAZEL CREST | HAZEL CREST | 13,098 | Active |
| HAZELCREST SUBDIVISION WELL #1 | HAZELCREST SUBDIVISION WELL #1 | 25 | Inactive |
| HAZELWOOD 1ST ADDN WELL 2 | PHENIX TWP | 25 | Inactive |
| HAZELWOOD 1ST ADDN WELL 3 | PHENIX TWP | 25 | Inactive |
| HAZELWOOD 1ST ADDN WELL 5 | PHENIX TWP | 32 | Inactive |
| HAZELWOOD 2ND ADDN WELL 1 | PHENIX TWP | 25 | Inactive |
| HAZELWOOD 2ND ADDN WELL 2 | PHENIX TWP | 25 | Inactive |
| HAZELWOOD 2ND ADDN WELL 3 | PHENIX TWP | 32 | Inactive |
| HAZELWOOD 3RD ADDN WELL 1 | PHENIX TWP | 32 | Inactive |
| HAZELWOOD 4TH ADDITION | GENESEO | 140 | Active |
| HAZELWOOD HEIGHTS SUBDIVISION | GENESEO | 235 | Active |
| HAZELWOOD WEST SUBDIVISION | GENESEO | 70 | Active |
| HEAP APTS | EMMET TWP | 64 | Inactive |
| HEARTVILLE PWD | DIETERICH | 1,092 | Active |
| HEATHER LYNN MOBILE HOME PARK | — | 25 | Inactive |
| HEATHERFIELD SUBDIVISION | MORRIS | 90 | Active |
| HEBRON | HEBRON | 1,368 | Active |
| HEBRON PWD | UNSPEC PL IN CO | 10,800 | Inactive |
| HECKER | HECKER | 429 | Active |
| HEIDEN GARDENS CONDOS | LAKE BLUFF | 217 | Active |
| HEIMERDINGER DAIRY FARM | JEFFERSON TWP | 25 | Inactive |
| HENDERSON | HENDERSON | 375 | Active |
| HENDERSON PWD | CARLINVILLE | 2,045 | Active |
| HENNEPIN | HENNEPIN | 650 | Inactive |
| HENNEPIN PWD | HENNEPIN | 750 | Active |
| HENRY | HENRY | 2,230 | Active |
| HENRY CO HAZELWOOD 1ST WELL 4 | — | 28 | Inactive |
| HENRY CO HAZELWOOD 1ST WELL 6 | — | 32 | Inactive |
| HENRY CO ROCK RIVERVIEW WELL1 | — | 32 | Inactive |
| HENRY COUNTY DAYTON'S VAL | HENRY COUNTY DAYTON'S VAL | 28 | Inactive |
| HENRY COUNTY HAZELWOOD 1S | HENRY COUNTY HAZELWOOD 1S | 28 | Inactive |
| HENRY LEADY TRAILER PARK | HENRY LEADY TRAILER PARK | 25 | Inactive |
| HERITAGE LAKES SUBDIVISION | MACKINAW TWP | 1,341 | Inactive |
| HERITAGE OF RANTOUL | CROFTON | 500 | Active |
| HERRICK | HERRICK | 358 | Active |
| HERRICK HS | HANOVER TWP | 57 | Inactive |
| HERRIN | HERRIN | 12,747 | Active |
| HERRON MOBILE HOME PARK | HERRON MOBILE HOME PARK | 25 | Inactive |
| HERSCHEL SPORTSMANS CLUB, INC. | NORTON TWP | 0 | Inactive |
| HERSCHER | HERSCHER | 1,600 | Active |
| HETTICK | HETTICK | 174 | Active |
| HEYWORTH | HEYWORTH | 2,853 | Active |
| HICKORY ACRES WTR ASSN | CARLINVILLE TWP | 42 | Inactive |
| HICKORY HILLS | HICKORY HILLS | 14,505 | Active |
| HICKORY HILLS 2ND ADDITION | TAYLOR RIDGE | 42 | Active |
| HICKORY HLS SBDV ASSN 1 | HOPEDALE TWP | 25 | Inactive |
| HICKORY HLS SBDV ASSN 2 | HOPEDALE TWP | 25 | Inactive |
| HICKORY HLS SBDV WELL 1 | BLACKHAWK TWP | 32 | Inactive |
| HICKORY HTS SBDV | PINE ROCK TWP | 25 | Inactive |
| HICKORY LN HOMEOWNERS ASSN | PROVISO TWP | 25 | Inactive |
| HICKORY RIDGE | HICKORY RIDGE | 25 | Inactive |
| HICKORY-KERTON WTR COOP | RUSHVILLE | 2,358 | Active |
| HIDDEN INN MHP | RIVERSIDE TWP | 32 | Inactive |
| HIDDEN MEADOWS | TAYLOR RIDGE | 70 | Inactive |
| HIDDEN MEADOWS SBDV | UNSPEC PL IN CO | 25 | Inactive |
| HIDDEN VALLEY CREEK APARTMENTS | NAPERVILLE | 80 | Inactive |
| HIDE-A-WAY LAKES | YORKVILLE | 50 | Inactive |
| HIGH CLIFF ESTATES | DENVER | 448 | Active |
| HIGHLAND | HIGHLAND | 10,674 | Active |
| HIGHLAND ESTS | ELGIN | 385 | Inactive |
| HIGHLAND HILLS SD | DARIEN | 1,071 | Inactive |
| HIGHLAND LAKE WATER COMPANY | LIBERTYVILLE | 36 | Inactive |
| HIGHLAND PARK | HIGHLAND PARK | 30,176 | Active |
| HIGHLAND SHORES WATER COMPANY | WONDER LAKE | 1,000 | Inactive |
| HIGHLAND SUBDIVISION | ST. CHARLES | 50 | Active |
| HIGHVIEW MHP | HIGHVIEW MHP | 25 | Inactive |
| HIGHWAY 37 NORTH PWD | MARION | 1,065 | Active |
| HIGHWOOD | HIGHWOOD | 5,335 | Active |
| HILL CITY WATER DISTRICT | BENTON | 452 | Active |
| HILL CRCTL CTR | GALESBURG TWP | 1,300 | Inactive |
| HILL TOP SAN | HILL TOP SAN | 25 | Inactive |
| HILL-N-DALE | HILL-N-DALE | 25 | Inactive |
| HILLCREST | ROCHELLE | 1,224 | Active |
| HILLCREST COURT 2ND ADDITION | TAYLOR RIDGE | 66 | Active |
| HILLCREST COURT SUBDIVISION | TAYLOR RIDGE | 60 | Active |
| HILLCREST HOME | PERU | 103 | Active |
| HILLCREST M H P | OTTAWA TWP | 26 | Inactive |
| HILLDALE MANOR SUBDIVISION | FOX LAKE | 414 | Active |
| HILLSBORO | HILLSBORO | 4,402 | Active |
| HILLSDALE ESTATES, LLC | BEAUFORT | 163 | Active |
| HILLSDALE PROPERTIES | MOLINE | 66 | Active |
| HILLSIDE | HILLSIDE | 8,200 | Active |
| HILLSIDE BERKELEY WATER COMMISSION | BELLWOOD | 1 | Active |
| HILLSIDE MANOR SBDV | LIMESTONE TWP | 312 | Inactive |
| HILLSIDE MOBILE HOME VILLAGE | MT CARMEL | 73 | Inactive |
| HILLTOP MHP | BLOOMINGTON | 1,360 | Active |
| HILLVIEW | ROODHOUSE | 94 | Active |
| HILLVIEW MHP | PRINCETON TWP | 25 | Inactive |
| HILLVIEW SUBDIVISION | NEW LENOX | 100 | Inactive |
| HINCKLEY | HINCKLEY | 2,006 | Active |
| HINDSBORO | OAKLAND | 296 | Active |
| HINSDALE | HINSDALE | 17,900 | Active |
| HINSWOOD SBDV | DOWNERS GR TWP | 3,700 | Inactive |
| HIRES TRACE SUBD | MORTON TWP | 25 | Inactive |
| HOBSON VALLEY WATER SYSTEM | DARIEN | 400 | Active |
| HODGKINS | HODGKINS | 1,472 | Active |
| HOFER SUBDIVISION | HOFER SUBDIVISION | 25 | Inactive |
| HOFFMAN | PATOKA | 452 | Active |
| HOFFMAN ESTATES | HOFFMAN ESTATES | 25 | Inactive |
| HOFFMAN ESTATES | HOFFMAN ESTATES | 50,179 | Active |
| HOFFMAN ESTS SOUTH | HOFFMAN ESTATES | 25 | Inactive |
| HOFFMAN RURAL WATER COMPANY | CARLYLE | 1,015 | Active |
| HOLIDAY ACRES UTIL INC | ROCKFORD TWP | 250 | Inactive |
| HOLIDAY ESTATES | HOLIDAY ESTATES | 25 | Inactive |
| HOLIDAY ESTATES SUBDIVISION | HOLIDAY ESTATES SUBDIVISION | 25 | Inactive |
| HOLIDAY MHP | NAMEOKI TWP | 425 | Inactive |
| HOLIDAY SHORES SD | EDWARDSVILLE | 2,840 | Active |
| HOLLANDS GROVE COURT SUBDIVISION | EAST PEORIA | 40 | Active |
| HOLLOWAYVILLE | HOLLOWAYVILLE | 36 | Active |
| HOLLY HILLS SBDV | MACKINAW TWP | 40 | Inactive |
| HOLLY HOCK HILL MHP | FLAGSTAFF | 47 | Active |
| HOLMES SMALL FARM SBDV | HANNA TWP | 32 | Inactive |
| HOLY FAMILY VILLA | LEMONT | 200 | Inactive |
| HOME NURSERY INC | LOOKNG GLASS TWP | 77 | Inactive |
| HOMER | HOMER | 1,200 | Active |
| HOMETOWN | HOMETOWN | 4,240 | Active |
| HOMEWOOD | HOMEWOOD | 19,463 | Active |
| HONEYCUTT HILL MHP LLC | MORRISON | 75 | Active |
| HONONEGAH CNTRY ESTS | ROSCOE TWP | 600 | Inactive |
| HOOPESTON | HOOPESTON | 5,802 | Active |
| HOOTON PWD | DANVILLE TWP | 1,550 | Inactive |
| HOPEDALE | HOPEDALE | 830 | Active |
| HOPEWELL | HOPEWELL | 420 | Active |
| HOPKINS PARK | HOPKINS PARK | 579 | Active |
| HOYLETON | CENTRALIA | 658 | Active |
| HOYLETON RWC | CENTRALIA | 1,020 | Active |
| HOYLETON-NEW MINDEN | CENTRALIA | 35 | Active |
| HUDSON | HUDSON | 1,847 | Active |
| HUFFMANS MHP | BARNETT TWP | 25 | Inactive |
| HULL | HULL | 435 | Active |
| HUMBOLDT | HUMBOLDT | 361 | Active |
| HUME | GEORGETOWN | 450 | Active |
| HUNTERS KNOLL SBDV | BLOOMINGTON TWP | 25 | Inactive |
| HUNTLEY | HUNTLEY | 28,495 | Active |
| HUNTLEY CMNTY SBDV | CRETE | 51 | Inactive |
| HUNTLEY HLS CRPRT CTR | RUTLAND TWP | 25 | Inactive |
| HURRICANE SBDV | — | 100 | Inactive |
| HURST | HURST | 782 | Active |
| HUTSONVILLE | HUTSONVILLE | 613 | Active |
| HYDE PARK MHP | SO WHEATLAND TWP | 390 | Inactive |
| HYDRONIC SUPPLY | HYDRONIC SUPPLY | 25 | Inactive |
| IL AMERICAN WTR CMPNY-CAMELOT | LIMESTONE TWP | 1,200 | Inactive |
| IL AMERICAN WTR CMPNY-ROME | CHILLICOTHE TWP | 295 | Inactive |
| IL AMERICAN-ALPINE HEIGHTS | GODFREY | 707 | Active |
| IL AMERICAN-ALTON | GODFREY | 46,127 | Active |
| IL AMERICAN-ANDALUSIA | GODFREY | 1,184 | Active |
| IL AMERICAN-ARBURY | GODFREY | 1,225 | Active |
| IL AMERICAN-ARROWHEAD | GODFREY | 1,581 | Active |
| IL AMERICAN-BROADLANDS | GODFREY | 330 | Active |
| IL AMERICAN-CAIRO | GODFREY | 1,821 | Active |
| IL AMERICAN-CENTRAL STATES DST | GODFREY | 117 | Active |
| IL AMERICAN-CHAMPAIGN | GODFREY | 150,000 | Active |
| IL AMERICAN-CHICAGO SUBURBAN | GODFREY | 11,187 | Active |
| IL AMERICAN-CHICKASAW | HOMER TWP | 12,432 | Inactive |
| IL AMERICAN-COUNTRY CLUB | GODFREY | 1,014 | Active |
| IL AMERICAN-DERBY MEADOWS | HOMER TWP | 6,438 | Inactive |
| IL AMERICAN-DUPAGE UTILITY | GODFREY | 6,613 | Active |
| IL AMERICAN-EAST ST LOUIS | GODFREY | 131,368 | Active |
| IL AMERICAN-FARMINGTON | GODFREY | 2,448 | Active |
| IL AMERICAN-FERNWAY | GODFREY | 5,223 | Active |
| IL AMERICAN-FISHER | GODFREY | 2,026 | Active |
| IL AMERICAN-GLASFORD | GODFREY | 1,193 | Active |
| IL AMERICAN-GRANITE CITY | GODFREY | 27,549 | Active |
| IL AMERICAN-HARDIN | GODFREY | 839 | Active |
| IL AMERICAN-HARDIN COUNTY | GODFREY | 1,373 | Active |
| IL AMERICAN-HOLLIS | GODFREY | 107 | Active |
| IL AMERICAN-HOMER TOWNSHIP | GODFREY | 24,543 | Active |
| IL AMERICAN-JERSEYVILLE | GODFREY | 8,737 | Active |
| IL AMERICAN-LAKE WATER COMPANY | GODFREY | 0 | Active |
| IL AMERICAN-LEONORE | GODFREY | 111 | Active |
| IL AMERICAN-LIBERTY RIDGE EAST | GODFREY | 320 | Active |
| IL AMERICAN-LIBERTY RIDGE WEST | GODFREY | 3,307 | Active |
| IL AMERICAN-LINCOLN | GODFREY | 15,200 | Active |
| IL AMERICAN-LIVINGSTON | GODFREY | 825 | Active |
| IL AMERICAN-LOMBARD HEIGHTS | GODFREY | 679 | Active |
| IL AMERICAN-MIDWEST PALOS | GODFREY | 132 | Active |
| IL AMERICAN-MORELAND | GODFREY | 445 | Active |
| IL AMERICAN-MOUNT PULASKI | GODFREY | 1,506 | Active |
| IL AMERICAN-NETTLE CREEK | GODFREY | 317 | Active |
| IL AMERICAN-PEKIN | GODFREY | 31,731 | Active |
| IL AMERICAN-PEORIA | GODFREY | 137,575 | Active |
| IL AMERICAN-PONTIAC | GODFREY | 11,864 | Active |
| IL AMERICAN-RANSOM | BELLEVILLE | 483 | Inactive |
| IL AMERICAN-RIDGECREST | GODFREY | 203 | Active |
| IL AMERICAN-RIVER GRANGE | GODFREY | 62 | Active |
| IL AMERICAN-ROLLINS | GODFREY | 231 | Active |
| IL AMERICAN-ROSICLARE | GODFREY | 1,387 | Active |
| IL AMERICAN-SADORUS | BELLEVILLE | 426 | Inactive |
| IL AMERICAN-SANTA FE | WOODRIDGE | 125 | Inactive |
| IL AMERICAN-SAUNEMIN | GODFREY | 456 | Active |
| IL AMERICAN-SOUTH BELOIT | GODFREY | 7,893 | Active |
| IL AMERICAN-STERLING | GODFREY | 14,782 | Active |
| IL AMERICAN-STREATOR | GODFREY | 19,000 | Active |
| IL AMERICAN-TERRA COTTA | GODFREY | 681 | Active |
| IL AMERICAN-TOLONO | GODFREY | 3,604 | Active |
| IL AMERICAN-VALLEY MARINA | GODFREY | 1,102 | Active |
| IL AMERICAN-VALLEY VIEW | GODFREY | 6,721 | Active |
| IL AMERICAN-VILLA GROVE | GODFREY | 2,467 | Active |
| IL AMERICAN-WASHINGTON ESTATES | GODFREY | 1,278 | Active |
| IL AMERICAN-WAYCINDEN | GODFREY | 1,934 | Active |
| IL AMERICAN-WEST SUBURBAN | GODFREY | 73,978 | Active |
| IL PRAIRIE ESTATE SBDV WATER ASSOCIATION | MARSEILLES | 78 | Active |
| IL RIVER CRCTL CTR | CANTON TWP | 1,516 | Inactive |
| IL VETERANS HOME (QUINCY) | QUINCY | 401 | Active |
| IL VETERANS HOME-MANTENO | MANTENO | 256 | Active |
| IL YOUTH CENTER KEWANEE | KEWANEE | 400 | Inactive |
| IL YOUTH CENTER ST CHARLES | ST. CHARLES | 260 | Active |
| IL YTH CNTR-HARRISBURG | HARRISBURG | 510 | Inactive |
| IL YTH CNTR-PERE MARQUETTE | QUARRY TWP | 116 | Inactive |
| IL YTH CNTR-VALLEY VIEW | ST CHARLES TWP | 400 | Inactive |
| ILCV CANDLE MHP, LLC | CEDAREDGE | 148 | Active |
| ILDU LEPERE MHP, LLC | CEDAREDGE | 250 | Active |
| ILLINOIS BENEDICTINE COLLEGE | LISLE TWP | 2,700 | Inactive |
| ILLINOIS CITY WATER WORKS | DRURY TWP | 25 | Inactive |
| ILLINOIS STATE FAIRGROUNDS | UNSPEC PL IN CO | 25 | Inactive |
| ILLINOIS STATE UNIVERSITY-NORMAL | NORMAL | 6,600 | Active |
| ILLIOPOLIS | ILLIOPOLIS | 1,037 | Active |
| ILMO OAK LAWN MHP LLC | CEDAREDGE | 950 | Inactive |
| ILOG OGLESBY MHP, LLC | PONTIAC | 88 | Active |
| ILPO REDWOOD MHP LLC | PONTIAC | 300 | Active |
| ILUR LIBERTY COMMONS MHP LLC | CROFTON | 865 | Active |
| ILUR PORTFOLIO 5 - TRAILSIDE MHP LLC | CROFTON | 62 | Active |
| ILUR PORTFOLIO 5 - WILSON MHP LLC | CROFTON | 62 | Active |
| ILUR PORTFOLIO 5-SURBANA ESTATES MHP LLC | CROFTON | 209 | Active |
| ILUR PORTFOLIOS - CARRIAGE ESTATES LLC | CROFTON | 115 | Active |
| ILUR WOODS EDGE MHP LLC | CROFTON | 373 | Active |
| IMPERIAL MHC | DENVER | 328 | Active |
| INDIAN BLUFFS SUBDIVISION | COAL VALLEY | 138 | Active |
| INDIAN CREEK HOMEOWNERS AND WATER ASSN. | TOWANDA | 210 | Active |
| INDIAN HEAD PARK | INDIAN HEAD PARK | 3,240 | Active |
| INDIAN HILLS SUBDIVISION | MILAN | 0 | Inactive |
| INDIAN OAK PARK #2 | INDIAN OAK PARK #2 | 25 | Inactive |
| INDIAN OAKS #1 | INDIAN OAKS #1 | 25 | Inactive |
| INDIAN SHORE ACRES | INDIAN SHORE ACRES | 25 | Inactive |
| INDUSTRY | INDUSTRY | 475 | Active |
| INGALLS PARK SUBDIVISION | NEW LENOX | 744 | Active |
| INVERNESS THE SHIRES | INVERNESS THE SHIRES | 800 | Inactive |
| IOLA | IOLA | 158 | Active |
| IPAVA | IPAVA | 447 | Active |
| IRIQUOIS CO CRESTVIEW SUBD | — | 40 | Inactive |
| IRIQUOIS CO KELLART LAKE ASSN | — | 40 | Inactive |
| IRIQUOIS CO PRICES BREEZY ACRE | — | 25 | Inactive |
| IROQUOIS MOBILE ESTATES, INC. | ST PETERSBURG | 105 | Active |
| IRVING | IRVING | 373 | Active |
| IRVINGTON | CENTRALIA | 1,081 | Active |
| ISLAND LAKE | ISLAND LAKE | 8,066 | Active |
| ISLAND LAKE WTR CMPNY | ISLAND LAKE | 25 | Inactive |
| ITASCA | ITASCA | 9,506 | Active |
| IUKA | IUKA | 486 | Active |
| IVESDALE | IVESDALE | 248 | Active |
| JACKSON HTS MHP | EMMET TWP | 25 | Inactive |
| JACKSONVILLE | JACKSONVILLE | 19,903 | Active |
| JACKSONVILLE CRCTL CNTR | JACKSONVIL PREC | 980 | Inactive |
| JARVIS TWNSHP PWS DSTRCT #1 | JARVIS TWP | 485 | Inactive |
| JASPER WATERWORKS CORPORATION | FAIRFIELD | 1,578 | Active |
| JEFFERSONVILLE (GEFF) | JEFFERSONVILLE | 355 | Active |
| JEISYVILLE | TAYLORVILLE | 102 | Active |
| JEROME | SPRINGFIELD | 1,600 | Active |
| JERSEY RWC | JERSEYVILLE | 12,750 | Active |
| JESINA OTTO | JESINA OTTO | 25 | Inactive |
| JEWETT | JEWETT | 256 | Active |
| JIM ETHERTON TRAILER PARK | JIM ETHERTON TRAILER PARK | 25 | Inactive |
| JO DAVIESS COUNTY GRIFFITHS M | JO DAVIESS COUNTY GRIFFITHS M | 30 | Inactive |
| JOHN DESHIELDS FED HSNG CMPLX | EAST ST LOUIS | 600 | Inactive |
| JOHNSBURG 1 | JOHNSBURG | 174 | Active |
| JOHNSBURG NO.2 | JOHNSBURG | 1,124 | Active |
| JOHNSTON CITY | JOHNSTON CITY | 3,509 | Active |
| JOLIET | JOLIET | 160,000 | Active |
| JOLIET ARMY AMN PLT - LAP PLT | FLORENCE TWP | 25 | Inactive |
| JOLIET ARMY AMN PLT - MFG PLT | CHANNAHON | 25 | Inactive |
| JOLIET CORRECTIONAL CENTER | JOLIET | 0 | Inactive |
| JOLIET INPATIENT TREATMENT CENTER | JOLIET | 486 | Active |
| JOLIET TREATMENT CENTER | JOLIET | 217 | Active |
| JONES APTS | JONES APTS | 25 | Inactive |
| JONESBORO | JONESBORO | 1,799 | Active |
| JONESVILLE PWD | OGLESGBY | 243 | Active |
| JONS MHP | SANDWICH | 92 | Active |
| JOPPA | JOPPA | 445 | Active |
| JOY | JOY | 377 | Active |
| JUBILEE WATER COMPANY, INC. | BRIMFIELD | 72 | Active |
| JULIO GALANDO | JULIO GALANDO | 25 | Inactive |
| JUNCTION CITY | CENTRALIA | 494 | Active |
| JUNE LAKE SBDV | UNSPEC PL IN CO | 25 | Inactive |
| JUSTICE-WESLEY FIELDS | JUSTICE | 1 | Inactive |
| JUSTICE-WILLOW SPRINGS WATER COMMISSION | JUSTICE | 18,457 | Active |
| KA HO LAKE ESTATES | KA HO LAKE ESTATES | 25 | Inactive |
| KAHO PUBLIC WATER DISTRICT | MT. OLIVE | 785 | Active |
| KALIS | KALIS | 25 | Inactive |
| KAMPSVILLE | NEBO | 335 | Active |
| KANE | KANE | 296 | Active |
| KANGLEY | KANGLEY | 300 | Inactive |
| KANKAKEE AREA CAREER CENTER | KANKAKEE AREA CAREER CENTER | 25 | Inactive |
| KANKAKEE CO A-C MHP | — | 25 | Inactive |
| KANKAKEE CO BURCH TRLR CT MHP | — | 171 | Inactive |
| KANKAKEE CORRECTIONAL CENTER | MANTENO | 210 | Inactive |
| KANSAS | KANSAS | 707 | Active |
| KAPPA MOBILE HOME PARK | KAPPA MOBILE HOME PARK | 25 | Inactive |
| KARNAK | KARNAK | 432 | Active |
| KASBEER | MINERAL TWP | 25 | Inactive |
| KASKASKIA SPRINGS WATER CO. | VANDALIA | 1 | Active |
| KASKASKIA WATER DISTRICT | NEW ATHENS | 0 | Active |
| KEENSBURG | KEENSBURG | 234 | Active |
| KEITHSBURG | KEITHSBURG | 747 | Active |
| KELLART LAKE | KELLART LAKE | 25 | Inactive |
| KEMMERER VILLAGE | ASSUMPTION TWP | 200 | Inactive |
| KEMPTON | KEMPTON | 177 | Active |
| KENILWORTH | KENILWORTH | 2,514 | Active |
| KENNETH HALL | KENNETH HALL | 25 | Inactive |
| KENNEY | CLINTON | 400 | Active |
| KEWANEE | KEWANEE | 12,509 | Active |
| KEWANEE LSRC | KEWANEE | 200 | Active |
| KEYESPORT | KEYESPORT | 625 | Active |
| KILDEER PROPERTIES HMWNRS ASSN | KILDEER | 224 | Inactive |
| KILJORDAN MEADOWS | MACOMB | 282 | Active |
| KINCADE ACRES MHP | OLNEY | 125 | Inactive |
| KINCAID | KINCAID | 1,561 | Active |
| KINDERHOOK | KINDERHOOK | 322 | Active |
| KINGS MOBILE COURT MHP | OTTAWA | 0 | Inactive |
| KINGSBURY WTR ASSN | HAMPTON TWP | 25 | Inactive |
| KINGSTON | KINGSTON | 1,160 | Active |
| KINGSTON MINES | KINGSTON MINES | 259 | Active |
| KINKAID AREA WATER SYSTEM | MURPHYSBORO | 1 | Active |
| KINMUNDY | KINMUNDY | 940 | Active |
| KINSMAN | DWIGHT | 99 | Active |
| KIRK WATER LINE INC | ROBINSON | 72 | Inactive |
| KIRKLAND | KIRKLAND | 2,000 | Active |
| KIRKLAND CONGRESS LAKE MHP | KIRKLAND CONGRESS LAKE MHP | 25 | Inactive |
| KIRKWOOD | KIRKWOOD | 714 | Active |
| KISHWAUKEE-KILBUCK ASSN | WORTH TWP | 90 | Inactive |
| KLEIN EMIL | KLEIN EMIL | 25 | Inactive |
| KLINE TRAILER CT | KLINE TRAILER CT | 25 | Inactive |
| KLINGBERG SCHOOLS | KLINGBERG SCHOOLS | 25 | Inactive |
| KLINGBERG SCHOOLS | KLINGBERG SCHOOLS | 25 | Inactive |
| KNOLLS EDGE SUBDIVISION | MONROE CENTER | 68 | Active |
| KNOLLWOOD MHP | KNOLLWOOD MHP | 25 | Inactive |
| KNOX CO BREEZY BLUFF WTR CORP | — | 43 | Inactive |
| KNOXVILLE | KNOXVILLE | 3,120 | Active |
| KOUNTRY AIRE MHP | OTTAWA TWP | 58 | Inactive |
| L AND G MHP | MOLINE | 75 | Inactive |
| LA BELLA OF CLIFTON | WATSEKA | 55 | Active |
| LA GRANGE | LA GRANGE | 16,200 | Active |
| LA GRANGE ESTATES MHP | LAGRANGE | 440 | Active |
| LA GRANGE HIGHLANDS SANITARY DISTRICT | LAGRANGE | 6,600 | Active |
| LA GRANGE PARK | LAGRANGE PARK | 13,011 | Active |
| LA PRAIRIE | LA PRAIRIE | 47 | Active |
| LA ROSE | LAROSE | 96 | Active |
| LA SALLE | LA SALLE | 9,700 | Active |
| LA SALLE CO HAMPTON MHP | — | 50 | Inactive |
| LA SALLE COUNTY GLENWOOD PW | LA SALLE COUNTY GLENWOOD PW | 450 | Inactive |
| LA SALLE COUNTY NURSING HOME | OTTAWA | 100 | Active |
| LA SALLE COUNTY RICHMOND SUB | LA SALLE COUNTY RICHMOND SUB | 28 | Inactive |
| LACON | LACON | 1,878 | Active |
| LADD | LADD | 1,263 | Active |
| LAFAYETTE | LAFAYETTE | 250 | Active |
| LAHARPE | LA HARPE | 1,200 | Active |
| LAKE ARISPIE WATER COMPANY, INC. | PRINCETON | 50 | Inactive |
| LAKE BARRINGTON | LAKE BARRINGTON | 500 | Active |
| LAKE BARRINGTON SHORES SUBDIVSION | LAKE BARRINGTON | 2,300 | Active |
| LAKE BLUFF | LAKE BLUFF | 5,600 | Active |
| LAKE BLUFF ESTATES MHP | MELROSE PARK | 165 | Active |
| LAKE BLVD PWD | UNSPEC PL IN CO | 600 | Inactive |
| LAKE CO. PW - ARDEN SHORES ESTATES | LIBERTYVILLE | 105 | Active |
| LAKE COUNTY NORTH LIBER | LAKE COUNTY NORTH LIBER | 518 | Inactive |
| LAKE COUNTY PUBLIC WATER DISTRICT | ZION | 1 | Active |
| LAKE COUNTY PW- HAWTHORN WOODS | LIBERTYVILLE | 675 | Active |
| LAKE FOREST | LAKE FOREST | 19,642 | Active |
| LAKE IN THE HILLS | LAKE IN THE HILLS | 28,661 | Active |
| LAKE IN THE WOODS SBDV | DOWNERS GR TWP | 1,060 | Inactive |
| LAKE INDIAN HILLS SUBDIVISION | CARBONDALE | 108 | Inactive |
| LAKE IROQUOIS ASSOCIATION | LODA | 800 | Active |
| LAKE LYNWOOD WATER SYSTEM | LYNN CENTER | 75 | Active |
| LAKE MATTOON PWD | NEOGA | 1,100 | Inactive |
| LAKE OF EGYPT PWD | MARION | 11,368 | Active |
| LAKE RUN APTS | NORTHFIELD TWP | 700 | Inactive |
| LAKE SARA AREA WATER CO-OP, INC. | EFFINGHAM | 3,352 | Active |
| LAKE SHANNON | REDDICK | 500 | Active |
| LAKE THUNDERBIRD SUBDIVSION | PERU | 450 | Active |
| LAKE VIEW MHP | BEACH PARK | 568 | Active |
| LAKE VIEW MHP | LAKE VIEW MHP | 25 | Inactive |
| LAKE VILLA | LAKE VILLA | 8,829 | Active |
| LAKE WILDWIND LLC | METAMORA | 200 | Active |
| LAKE WILDWOOD MHP | LAKE WILDWOOD MHP | 25 | Inactive |
| LAKE WILLIAMSON CHRISTIAN CENTER | CARLINVILLE | 1,250 | Active |
| LAKE WINDERMERE ESTATES SUBDIVISION | TREMONT | 300 | Active |
| LAKE ZURICH | LAKE ZURICH | 19,759 | Active |
| LAKEMOOR | LAKEMOOR | 2,720 | Active |
| LAKESIDE PWD | CARBONDALE | 3,065 | Active |
| LAKEVIEW ACRES HOME OWNERS ASSN | RICHMOND | 35 | Inactive |
| LAKEVIEW ESTATES MHP | DAVENPORT | 0 | Inactive |
| LAKEVIEW HILLS WATER SUPPLY COMPANY | STERLING | 10 | Inactive |
| LAKEVIEW IMPRV ASSN | ROCKDALE | 90 | Inactive |
| LAKEVIEW MHP | BYRON | 24 | Inactive |
| LAKEVIEW RANCH MHP | MATTOON | 50 | Inactive |
| LAKEWOOD | LAKEWOOD | 4,267 | Active |
| LAKEWOOD SHORES IMPROVEMENT ASSOCIATION | WILMINGTON | 868 | Active |
| LAKEWOOD WTR SYS | ELA TWP | 25 | Inactive |
| LAMB'S FARM | LIBERTYVILLE | 175 | Inactive |
| LAMOILLE | LA MOILLE | 750 | Active |
| LAMPLIGHTER | LAMPLIGHTER | 25 | Inactive |
| LANARK | LANARK | 1,504 | Active |
| LAND AND WTR ASSN | OTTAWA | 83 | Active |
| LANGLEYVILLE PWD | LANGLEYVILLE | 450 | Active |
| LANSING | LANSING | 29,076 | Active |
| LAPLACE | DECATUR | 0 | Inactive |
| LARCHMONT SUBDIVISION | ROCKFORD | 18 | Inactive |
| LATHAM | LATHAM | 380 | Active |
| LAWNDALE MHP | DANVILLE TWP | 26 | Inactive |
| LAWRENCE COUNTY CORRECTIONAL CENTER | DIETERICH | 870 | Active |
| LAWRENCEVILLE | LAWRENCEVILLE | 4,524 | Active |
| LCPW - BROOKS FARM SUBDIVISION | LIBERTYVILLE | 1,563 | Active |
| LCPW - HIGHLAND LAKE SUBDIVISION | LIBERTYVILLE | 330 | Active |
| LCPW - OAK TERRACE | LIBERTYVILLE | 45 | Active |
| LCPW - PEKARA SUBDIVISION | LIBERTYVILLE | 3,711 | Active |
| LCPW-KNOLLWOOD PWS | LIBERTYVILLE | 6,078 | Inactive |
| LE ROY | LEROY | 3,498 | Active |
| LEAF RIVER | LEAF RIVER | 403 | Active |
| LEANNA LKSIDE WELL 1 | OWEN TWP | 25 | Inactive |
| LEBANON | LEBANON | 4,714 | Active |
| LEDRON | LEDRON | 25 | Inactive |
| LEE | LEE | 313 | Active |
| LEE CO KA-RON APTS | — | 58 | Inactive |
| LEGEND LAKES WATER ASSOCIATION | ROSCOE | 250 | Active |
| LEISURELAND MHP | PONTOOSUC TWP | 27 | Inactive |
| LELAND | LELAND | 951 | Active |
| LEMONT | LEMONT | 17,500 | Active |
| LENA | LENA | 2,680 | Active |
| LENTZ TERRY M | LENTZ TERRY M | 25 | Inactive |
| LENZBURG | SWANSEA | 616 | Active |
| LERNA | MATTOON | 350 | Inactive |
| LEVEL ACRES BRIARGATE WTR ASSN | COLONA TWP | 25 | Inactive |
| LEVEL ACRES WELL 1 | COLONA TWP | 32 | Inactive |
| LEVEL ACRES WELL 2 | COLONA TWP | 32 | Inactive |
| LEVEL ACRES WTR SYS INC | COLONA TWP | 25 | Inactive |
| LEWIS UNIV | LOCKPORT TWP | 2,500 | Inactive |
| LEWISTOWN | LEWISTOWN | 2,400 | Active |
| LEWISVILLE SHELTER CARE | LEWISVILLE SHELTER CARE | 25 | Inactive |
| LEXINGTON | LEXINGTON | 1,930 | Active |
| LEYDEN TWSP WATER DISTRICT | FRANKLIN PARK | 10,000 | Active |
| LIBERTY | LIBERTY | 609 | Active |
| LIBERTY PARK HOMEOWNERS ASSOCIATION | WESTMONT | 950 | Active |
| LIBERTY-LEDFORD PWD | HARRISBURG | 1,255 | Active |
| LIBERTYVILLE | LIBERTYVILLE | 20,500 | Active |
| LICK CREEK PWD | BUNCOMBE | 2,365 | Active |
| LILLIAN WHITE | LILLIAN WHITE | 25 | Inactive |
| LIMA | URSA | 168 | Active |
| LIMESTONE-WALTERS PWD | PEORIA | 2,023 | Active |
| LINCOLN CHRISTIAN COLLEGE | WEST LINCOLN TWP | 500 | Inactive |
| LINCOLN CORRECTIONAL CENTER | LINCOLN | 1,036 | Active |
| LINCOLN DVLCTR | BROADWELL TWP | 750 | Inactive |
| LINCOLN PLACE MHP | SPRINGFIELD | 0 | Inactive |
| LINCOLN PRAIRIE WATER COMPANY | DIETERICH | 1,015 | Inactive |
| LINCOLNSHIRE | LINCOLNSHIRE | 7,940 | Active |
| LINCOLNWOOD | LINCOLONWOOD | 13,463 | Active |
| LINDEN MANOR MHP | LA VERNE | 84 | Active |
| LINDENHURST | LINDENHURST | 14,500 | Active |
| LINDENTREE TOWNHOMES | GLENVIEW | 232 | Active |
| LINDENWOOD WATER ASSOCIATION | LINDENWOOD | 38 | Active |
| LINWAY ESTATES MHP | BLUE ISLAND | 380 | Active |
| LISBON NORTH, INC. | MORRIS | 25 | Active |
| LISLE | LISLE | 24,233 | Active |
| LISLE (OLD IL MUN) | LISLE | 1,200 | Inactive |
| LITCHFIELD | LITCHFIELD | 6,648 | Active |
| LITTLE CITY FOUNDATION | PALATINE TWP | 250 | Inactive |
| LITTLE FLOCK BAPTIST MHP | LITTLE FLOCK BAPTIST MHP | 25 | Inactive |
| LITTLE SWAN LAKE SD | MONMOUTH | 438 | Active |
| LITTLE YORK | LITTLE YORK | 304 | Active |
| LIVINGSTON COUNTY NURSING HOME | LIVINGSTON COUNTY NURSING HOME | 25 | Inactive |
| LOAMI | LOAMI | 812 | Active |
| LOCKPORT | LOCKPORT | 23,100 | Active |
| LOCKPORT HEIGHTS SD | LOCKPORT | 984 | Active |
| LOCKPORT TOWNSHIP WATER SYSTEM | JOLIET | 2,610 | Inactive |
| LOCKPORT TWSP NORTH WTR SYS | LOCKPORT TWP | 795 | Inactive |
| LOCKPORT TWSP SOUTH WTR SYS | LOCKPORT TWP | 1,770 | Inactive |
| LODA | WESTVILLE | 398 | Active |
| LOGAN CORRECTIONAL CENTER | LINCOLN | 1,500 | Active |
| LOGAN COUNTY HOUSIN AUTHORITY | LINCOLN | 120 | Inactive |
| LOMBARD | LOMBARD | 44,476 | Active |
| LONDON MILLS | LONDON MILLS | 500 | Active |
| LONG CREEK TOWNSHIP PWS | DECATUR | 7,850 | Active |
| LONG GROVE | LONG GROVE | 70 | Active |
| LONG POINT | UNSPEC PL IN CO | 313 | Inactive |
| LONGACRE ESTATES MHP | FARMINGTON HILLS | 375 | Active |
| LONGHOLLOW POINT | GALENA | 25 | Inactive |
| LONGVIEW | LONGVIEW | 25 | Inactive |
| LONGVIEW | LONGVIEW | 146 | Active |
| LONGVIEW WELL 1 | RANDOLPH TWP | 25 | Inactive |
| LORAINE | LORAINE | 300 | Active |
| LOST LAKE UTILITY DISTRICT | DIXON | 704 | Active |
| LOSTANT | LOSTANT | 463 | Active |
| LOUISVILLE | LOUISVILLE | 1,201 | Active |
| LOVES PARK | LOVES PARK | 23,335 | Active |
| LOVINGTON | ARTHUR | 1,024 | Active |
| LOW POINT WATER DISTRICT | LOWPOINT | 200 | Active |
| LOYOLA UNIV MED CNTR | PROVISO TWP | 8,800 | Inactive |
| LUDLOW | LUDLOW | 330 | Active |
| LYNDON | LYNDON | 537 | Active |
| LYNN WATER ASSOCIATION, INC | LYNN CENTER | 100 | Active |
| LYNNWOOD WATER CORPORATION | PERU | 100 | Active |
| LYNWOOD | LYNWOOD | 9,149 | Active |
| LYNWOOD 1ST ADDN WELL 2 | HANNA TWP | 25 | Inactive |
| LYNWOOD 3RD ADDITION | GENESEO | 100 | Active |
| LYONS | LYONS | 10,304 | Active |
| M C L W SYSTEM, INC. | MILAN | 98 | Active |
| MA CENTER CHICAGO | ELBURN | 70 | Active |
| MACEDONIA | BENTON | 155 | Active |
| MACKINAW | MACKINAW | 3,399 | Active |
| MACOMB | MACOMB | 15,051 | Active |
| MACON | MACON | 1,205 | Active |
| MACOUPIN COUNTY BOLTS MHP | MACOUPIN COUNTY BOLTS MHP | 66 | Inactive |
| MAEYSTOWN | MAEYSTOWN | 340 | Active |
| MAGNOLIA | PERU | 244 | Active |
| MAHOMET | MAHOMET | 6,580 | Active |
| MALDEN | MALDEN | 318 | Active |
| MALTA | MALTA | 1,143 | Active |
| MANCHESTER | ROODHOUSE | 297 | Active |
| MANCUSO VILLAGE PARK MHP | CLEARWATER | 325 | Active |
| MANHATTAN | MANHATTAN | 10,340 | Active |
| MANITO | MANITO | 1,552 | Active |
| MANLIUS | PERU | 298 | Active |
| MANSFIELD | MANSFIELD | 939 | Active |
| MANTENO | MANTENO | 6,414 | Inactive |
| MANTENO MHP | BLOOMFIELD HILLS | 144 | Active |
| MAPLE ACRES MHP | PLAINFIELD | 260 | Active |
| MAPLE CREST CARE CENTER LLC | BELVIDERE | 86 | Inactive |
| MAPLE CREST MANOR MHP | DENVER | 190 | Active |
| MAPLE HILL IMPRV ASSN | DOWNERS GR TWP | 200 | Inactive |
| MAPLE LEAF ESTATES WATER CORPORATION | NEW ATHENS | 0 | Inactive |
| MAPLE LEAF MHP | MAPLE LEAF MHP | 25 | Inactive |
| MAPLE PARK | MAPLE PARK | 1,484 | Active |
| MAPLE RIDGE MHP | MANTENO | 120 | Inactive |
| MAPLE VALLEY MHP | ELKHART | 382 | Inactive |
| MAPLECREST SUBDIVISION | MAPLECREST SUBDIVISION | 25 | Inactive |
| MAPLECREST SUBDIVISON | MAPLECREST SUBDIVISON | 25 | Inactive |
| MAPLETON | MAPLETON | 261 | Active |
| MAPLEWOOD MAC LLC | CROFTON | 270 | Active |
| MAQUON | MAQUON | 218 | Active |
| MARENGO | MARENGO | 7,572 | Active |
| MARENGO ESTS SBDV | UNSPEC PL IN CO | 4,360 | Inactive |
| MARGARETS HI-ACRE MHP | AURORA | 300 | Active |
| MARGARETS PARK VIEW ESTATES MHP | AURORA | 300 | Active |
| MARIETTA | MARIETTA | 440 | Active |
| MARINE | MARINE | 1,037 | Active |
| MARION | MARION | 16,855 | Active |
| MARION MOBILE HOME VILLAGE | CARBONDALE | 220 | Active |
| MARISSA | FREEBURG | 1,921 | Active |
| MARK | MARK | 555 | Active |
| MARKHAM | MARKHAM | 12,500 | Active |
| MAROA | MAROA | 1,700 | Active |
| MARQUETTE HEIGHTS | MARQUETTE HEIGHTS | 2,974 | Active |
| MARSEILLES | MARSEILLES | 5,061 | Active |
| MARSEILLES SOUTH | MARSEILLES | 100 | Active |
| MARSHALL | MARSHALL | 3,947 | Active |
| MARTIN MILLER | MARTIN MILLER | 25 | Inactive |
| MARTINSVILLE | MARTINSVILLE | 1,200 | Active |
| MARTINTON | MARTINTON | 375 | Active |
| MARYDEL MANOR | MARYDEL MANOR | 25 | Inactive |
| MARYVILLE | MARYVILLE | 10,150 | Active |
| MARYVILLE FARM CAMPUS | DURAND | 0 | Inactive |
| MASCOUTAH | MASCOUTAH | 8,759 | Active |
| MASH CREEK WATER CORPORATION | OLNEY | 31 | Inactive |
| MASON | DIETERICH | 396 | Inactive |
| MASON CITY | MASON CITY | 2,558 | Active |
| MASON CO PRAIRIE TRAILS MHP | — | 300 | Inactive |
| MASON COUNTY CLEARVIEW ES | MASON COUNTY CLEARVIEW ES | 25 | Inactive |
| MASON COUNTY EDGEWOOD TER | MASON COUNTY EDGEWOOD TER | 30 | Inactive |
| MASON COUNTY EDGEWOOD TER | MASON COUNTY EDGEWOOD TER | 30 | Inactive |
| MASON COUNTY EDGEWOOD TER | MASON COUNTY EDGEWOOD TER | 30 | Inactive |
| MASON COUNTY EDGEWOOD TER | MASON COUNTY EDGEWOOD TER | 30 | Inactive |
| MASON POINT | SULLIVAN | 195 | Inactive |
| MASON'S MOBILE MANOR MHP | MASON'S MOBILE MANOR MHP | 25 | Inactive |
| MATHERVILLE | MATHERVILLE | 651 | Active |
| MATIASEK | MATIASEK | 25 | Inactive |
| MATTESON | MATTESON | 18,293 | Active |
| MATTOON | MATTOON | 19,500 | Active |
| MAYFAIR SUBDIVISION | MORTON | 98 | Active |
| MAYWOOD | MAYWOOD | 24,090 | Active |
| MAZON | MAZON | 994 | Active |
| MC COOK | MCCOOK | 280 | Active |
| MC HENRY COUNTY PISTAKEE HIG | MC HENRY COUNTY PISTAKEE HIG | 2,156 | Inactive |
| MC HENRY COUNTY SUNSET VIEW | MC HENRY COUNTY SUNSET VIEW | 110 | Inactive |
| MC LEAN | MC LEAN | 791 | Active |
| MC LEAN COUNTY MOBILE LAND | MC LEAN COUNTY MOBILE LAND | 705 | Inactive |
| MCCLURE-EAST CAPE PWD | MCCLURE | 910 | Active |
| MCHENRY | MCHENRY | 22,335 | Active |
| MCKINLEY MHP | DECATUR TWP | 90 | Inactive |
| MCLEANSBORO | MCLEANSBORO | 2,812 | Active |
| MCNABB | MCNABB | 258 | Active |
| MEADOWBROOK MH COMMUNITY, LLC | FARMINGTON HILLS | 463 | Active |
| MEADOWBROOK PWD | BETHALTO | 1,778 | Active |
| MEADOWOOD SBDV | RADNOR TWP | 160 | Inactive |
| MEADOWS MENNONITE HOME | CHENOA | 140 | Active |
| MEADOWS MENNONITE HOME | MEADOWS MENNONITE HOME | 25 | Inactive |
| MEADOWS OF BLOOMINGTON MHP | TROY | 343 | Active |
| MEADOWS OF WEST BAY WATER TREATMENT | WONDER LAKE | 108 | Inactive |
| MECHANICSBURG-BUFFALO WATER COMMISSION | BUFFALO | 1,170 | Active |
| MEDIA | MEDIA | 139 | Active |
| MEDINA MEADOWS | MEDINA MEADOWS | 25 | Inactive |
| MEDORA | JERSEYVILLE | 484 | Active |
| MEL KAY MHP | FELIX TWP | 88 | Inactive |
| MELODY WELL WATER ASSN | MELODY WELL WATER ASSN | 25 | Inactive |
| MELROSE PARK | MELROSE PARK | 24,206 | Active |
| MELROSE RENTAL | AURORA | 38 | Inactive |
| MELTON SUBDIVISION | MELTON SUBDIVISION | 25 | Inactive |
| MELVIN | MELVIN | 465 | Active |
| MENARD CORRECTIONAL CENTER | MENARD | 2,950 | Active |
| MENARD COUNTY WEST ATHENS | MENARD COUNTY WEST ATHENS | 73 | Inactive |
| MENARD RURAL WATER COOP | PETERSBURG | 753 | Active |
| MENDON | MENDON | 953 | Active |
| MENDOTA | MENDOTA | 6,926 | Active |
| MENDOTA ESTATES MHP | PERU | 110 | Active |
| MENNONITE CHURCH OF NORMAL | — | 25 | Inactive |
| MERCER COUNTY ASH SUBD WE | MERCER COUNTY ASH SUBD WE | 28 | Inactive |
| MERCER COUNTY SW ASHLAND | MERCER COUNTY SW ASHLAND | 28 | Inactive |
| MEREDOSIA | MEREDOSIA | 1,075 | Active |
| MERIDAN MANOR MHP | MERIDAN MANOR MHP | 25 | Inactive |
| MERIDIAN MHP | POPLAR GROVE | 78 | Active |
| MERIDIAN VILLAGE | GLEN CARBON | 339 | Active |
| MERRIONETTE PARK | MERRIONETTE PARK | 1,969 | Active |
| MERRY OAKS 1ST ADD WELL #1 | MERRY OAKS 1ST ADD WELL #1 | 25 | Inactive |
| MERRY OAKS 1ST ADD WELL #2 | MERRY OAKS 1ST ADD WELL #2 | 25 | Inactive |
| MERRY OAKS 1ST ADDN WELL #11 | HAMPTON TWP | 25 | Inactive |
| MERRY OAKS 2ND & 3RD ADD WELL | MERRY OAKS 2ND & 3RD ADD WELL | 25 | Inactive |
| MERRY OAKS 2ND ADD WELL #3 | MERRY OAKS 2ND ADD WELL #3 | 25 | Inactive |
| MERRY OAKS 2ND ADDN WELL #1 | HAMPTON TWP | 25 | Inactive |
| MERRY OAKS 3RD ADD WELL #5 | MERRY OAKS 3RD ADD WELL #5 | 25 | Inactive |
| MERRY OAKS 3RD ADD WELL #6 | MERRY OAKS 3RD ADD WELL #6 | 25 | Inactive |
| METAMORA | METAMORA | 3,895 | Active |
| METCALF | METCALF | 200 | Active |
| METROPOLIS | METROPOLIS | 6,309 | Active |
| MID-MARK WATER COMMISSION | MARKHAM | 25 | Active |
| MIDDLETOWN | MIDDLETON | 434 | Active |
| MIDLOTHIAN | MIDLOTHIAN | 14,819 | Active |
| MIDWAY COUNTRY VILLAGE MHP | DOUGLAS TWP | 40 | Inactive |
| MIDWAY MANOR APTS | MIDWAY MANOR APTS | 25 | Inactive |
| MIDWAY TRAILER COURT | MIDWAY TRAILER COURT | 25 | Inactive |
| MIDWEST ESTS SBDV | UNSPEC PL IN CO | 25 | Inactive |
| MILAN | MILAN | 4,945 | Active |
| MILFORD | MILFORD | 1,306 | Active |
| MILL CREEK MANOR WELL #1 | MILL CREEK MANOR WELL #1 | 25 | Inactive |
| MILL CREEK MANOR WELL 2 | BLACKHAWK TWP | 32 | Inactive |
| MILL CREEK PWD | QUINCY | 5,755 | Active |
| MILL CREEK WATER RECLAMATION DISTRICT | GENEVA | 8,000 | Active |
| MILL POINT MHP | EAST PEORIA | 200 | Active |
| MILL SHOALS | MILL SHOALS | 224 | Active |
| MILLEDGEVILLE | MILLEDGEVILLE | 989 | Active |
| MILLER SBDV | SHELBYVILLE TWP | 25 | Inactive |
| MILLSTADT | SWANSEA | 4,071 | Active |
| MILLSTONE PWD | NASHVILLE | 5,565 | Active |
| MILTON | MILTON | 271 | Active |
| MILTON MANOR MHP | LA VERNE | 154 | Active |
| MINERAL | MINERAL | 250 | Active |
| MINIER | MINIER | 1,180 | Active |
| MINONK | MINONK | 1,928 | Active |
| MINOOKA | MINOOKA | 12,800 | Active |
| MISSION BROOK SD | NORTHBROOK | 2,852 | Active |
| MISSISSIPPI MANUFACTURED HOME COMMUNITY | TROY | 503 | Active |
| MITCHELL PWD | GRANITE CITY | 5,253 | Active |
| MITCHELLSVILLE PWD | HARRISBURG | 1,970 | Active |
| MOBILE HOME PARK | MOBILE HOME PARK | 25 | Inactive |
| MODERN MHP | JOLIET TWP | 65 | Inactive |
| MODESTO | MODESTO | 182 | Active |
| MOKENA | MOKENA | 19,887 | Active |
| MOLINE | MOLINE | 44,500 | Active |
| MOMENCE | MOMENCE | 3,075 | Active |
| MONEE | MONEE | 5,148 | Active |
| MONFORT'S CAMPER STOP | MONFORT'S CAMPER STOP | 25 | Inactive |
| MONMOUTH | MONMOUTH | 8,902 | Active |
| MONROE COUNTY MONROE CO WT | MONROE COUNTY MONROE CO WT | 315 | Inactive |
| MONTGOMERY | MONTGOMERY | 28,956 | Active |
| MONTGOMERY COUNTY KAMPER COMPA | MONTGOMERY COUNTY KAMPER COMPA | 42 | Inactive |
| MONTICELLO | MONTICELLO | 5,548 | Active |
| MOORES PRAIRIE TOWNSHIP WATER COMPANY | BELLE RIVE | 213 | Active |
| MOORINGS HLTH CTR | WHEELING TWP | 135 | Inactive |
| MOOSEHEART | MOOSEHEART | 272 | Active |
| MOREL DR WTR ASSN | BLOOMINGTON TWP | 28 | Inactive |
| MORGAN CREEK | YORKVILLE | 66 | Active |
| MORNINGSIDE MOBILE ESTATES MHP | WAYNESVILLE | 34 | Active |
| MORO PWD | MORO | 723 | Active |
| MORRIS | MORRIS | 14,775 | Active |
| MORRISON | MORRISON | 4,188 | Active |
| MORRISONVILLE | MORRISONVILLE | 1,068 | Active |
| MORTON | MORTON | 17,111 | Active |
| MORTON GROVE | MORTON GROVE | 25,297 | Active |
| MORTON GROVE - NILES WATER COMMISSION | NILES | 0 | Active |
| MOULTRIE COUNTY RWD | SULLIVAN | 2,600 | Active |
| MOUND CITY | MOUND CITY | 526 | Active |
| MOUND PWD | COLLINSVILLE | 1,500 | Active |
| MOUND STATION | MT. STERLING | 122 | Active |
| MOUNDS | MOUNDS | 1,135 | Active |
| MOUNT AUBURN | MT. AUBURN | 480 | Active |
| MOUNT CARMEL | MT CARMEL | 7,015 | Active |
| MOUNT CARROLL | MT CARROLL | 1,479 | Active |
| MOUNT CLARE | GILLESPIE | 311 | Active |
| MOUNT ERIE | MOUNT ERIE | 128 | Active |
| MOUNT GILEAD SHLCRHM | WOODVILLE TWP | 30 | Inactive |
| MOUNT MORRIS | MT. MORRIS | 2,861 | Active |
| MOUNT MORRIS ESTATES MHP | LIMA | 395 | Active |
| MOUNT OLIVE | AVISTON | 2,193 | Active |
| MOUNT PROSPECT | MOUNT PROSPECT | 41,000 | Active |
| MOUNT SHELTER CARE HOME | MOUNT SHELTER CARE HOME | 25 | Inactive |
| MOUNT ST JOSEPH SCHOOL ICF | VOLO | 125 | Active |
| MOUNT STERLING | MT. STERLING | 3,271 | Active |
| MOUNT VERNON | MOUNT VERNON | 15,793 | Active |
| MOUNT VERNON ASSOCIATION INC | EAST DUBUQUE | 438 | Active |
| MOUNT ZION | MOUNT ZION | 5,833 | Active |
| MOWEAQUA | MOWEAQUA | 1,785 | Active |
| MT MORRIS ESTATES MHP | MT MORRIS ESTATES MHP | 25 | Inactive |
| MUDDY | MUDDY | 171 | Active |
| MULBERRY GROVE | MULBERRY GROVE | 548 | Active |
| MULKEYTOWN PWD | MULKEYTOWN | 328 | Active |
| MUNDELEIN | MUNDELEIN | 31,500 | Active |
| MURDALE PWD | MURPHYSBORO | 4,963 | Active |
| MURPHYSBORO | MURPHYSBORO | 10,241 | Active |
| MURPHYSBORO LSRC | PINCKNEYVILLE | 167 | Active |
| MURRAYVILLE-WOODSON WATER COMMISSION | MURRAYVILLE | 1,403 | Active |
| N E LAWSON | N E LAWSON | 25 | Inactive |
| NACHUSA LUTHERAN HOME | NACHUSA | 24 | Inactive |
| NANCYS MHP | DAVENPORT | 77 | Active |
| NAPERVILLE | NAPERVILLE | 156,406 | Active |
| NAPLATE | OTTAWA | 465 | Active |
| NASHVILLE | NASHVILLE | 3,230 | Active |
| NASON | BENTON | 207 | Active |
| NATURAL GAS PIPELINE COMPANY | PILOT TWP | 75 | Inactive |
| NAUVOO | NAUVOO | 1,200 | Active |
| NEARTOWN MHP | ROCKFORD | 20 | Inactive |
| NEARTOWN MHP | NICKY J APARTMENTS | 25 | Inactive |
| NEBO | NEBO | 280 | Active |
| NEOGA | NEOGA | 1,636 | Active |
| NEPONSET | NEPONSET | 450 | Active |
| NEW ATHENS | NEW ATHENS | 1,970 | Active |
| NEW BADEN | NEW BADEN | 4,178 | Active |
| NEW BEDFORD | NEW BEDFORD | 25 | Inactive |
| NEW BERLIN | NEW BERLIN | 1,380 | Active |
| NEW BOSTON | NEW BOSTON | 613 | Active |
| NEW CANTON | NEW CANTON | 359 | Active |
| NEW CHERRY LAKE CLUB | DUQUOIN | 96 | Inactive |
| NEW HAVEN | NEW HAVEN | 424 | Active |
| NEW HOLLAND | SAN JOSE | 275 | Active |
| NEW HOPE WATERWORKS CORP | FAIRFIELD | 1,285 | Active |
| NEW LENOX | NEW LENOX | 27,690 | Active |
| NEW LENOX-LARAWAY | NEW LENOX TWP | 2,465 | Inactive |
| NEW MEMPHIS PWD | NEW MEMPHIS | 805 | Active |
| NEW MINDEN | NEW MINDEN | 343 | Active |
| NEW PERSPECTIVE SENIOR LIVING | INGLESIDE | 62 | Active |
| NEW PIASA CHAUTAUQUA PWS | NEBO | 335 | Active |
| NEW SALEM PWD | ADAIR | 451 | Active |
| NEW WINDSOR | NEW WINDSOR | 740 | Active |
| NEWARK | NEWARK | 986 | Active |
| NEWBURGH LANDOWNERS WTR ASSN | ROCKFORD TWP | 80 | Inactive |
| NEWMAN | NEWMAN | 836 | Active |
| NEWTON | NEWTON | 2,977 | Active |
| NILES | NILES | 29,350 | Active |
| NILES NURSING AND REHABILITATION | NILES | 304 | Inactive |
| NILWOOD | MODESTO | 1,394 | Active |
| NOBLE | NOBLE | 805 | Active |
| NOKOMIS | NOKOMIS | 2,370 | Active |
| NORMAL | NORMAL | 52,736 | Active |
| NORRIDGE | NORRIDGE | 15,251 | Active |
| NORRIS | NORRIS | 358 | Active |
| NORRIS CITY | NORRIS CITY | 2,155 | Active |
| NORTH AURORA | NORTH AURORA | 18,261 | Active |
| NORTH CHICAGO | NORTH CHICAGO | 16,813 | Active |
| NORTH CITY | COELLO | 772 | Active |
| NORTH EAST CENTRAL PWD | EDWARDSVILLE | 3,975 | Active |
| NORTH EAST MARION COUNTY WATER CMPNY | SALEM | 3,220 | Active |
| NORTH EASTERN AVE | NORTH EASTERN AVE | 25 | Inactive |
| NORTH FORK WELL ASSN | BLOUNT TWP | 25 | Inactive |
| NORTH GATE ESTATES INC MHP | NORTH GATE ESTATES INC MHP | 25 | Inactive |
| NORTH GLENVIEW MHP | NORTH GLENVIEW MHP | 25 | Inactive |
| NORTH GLENVIEW MHP | GLENVIEW | 150 | Inactive |
| NORTH HAZELWOOD SBDV | GENESEO | 100 | Active |
| NORTH HENDERSON | NORTH HENDERSON | 172 | Active |
| NORTH LAKE SBDV | ASTORIA TWP | 25 | Inactive |
| NORTH MEADOW VILLAGE MHP | NORMAL | 495 | Active |
| NORTH MORGAN WATER COOP | JACKSONVILLE | 2,763 | Active |
| NORTH PARK PWD | MACHESNEY PARK | 35,580 | Active |
| NORTH PEKIN | NORTH PEKIN | 1,478 | Active |
| NORTH REGIONAL WATER FAC | DARIEN | 770 | Active |
| NORTH RIVERSIDE | NORTH RIVERSIDE | 7,071 | Active |
| NORTH TAZEWELL PWD | EAST PEORIA | 8,300 | Active |
| NORTH UTICA | UTICA | 1,323 | Active |
| NORTHBROOK | NORTHBROOK | 34,407 | Active |
| NORTHBROOK MHC | SPFLD | 220 | Active |
| NORTHEAST HARTMAN SUBDIVISION | NORTHEAST HARTMAN SUBDIVISION | 25 | Inactive |
| NORTHEAST MOUNT VERNON WATER COMPANY | MT VERNON | 5,483 | Active |
| NORTHERN BREESE WATER ASSOCIATION | BREESE | 92 | Inactive |
| NORTHERN ILLINOIS UNIVERSITY-DEKALB | DEKALB | 6,500 | Active |
| NORTHFIELD | NORTHFIELD | 5,470 | Active |
| NORTHFIELD MHP | NORTHFIELD MHP | 25 | Inactive |
| NORTHGATE ESTATES MHP | ROCKFORD | 100 | Active |
| NORTHLAKE | NORTH LAKE | 12,840 | Active |
| NORTHSIDE PETERSON WLFND | BLOOMINGDALE TWP | 25 | Inactive |
| NORTHWEST BELMONT IMPROVEMENT ASSOCIATIO | DOWNERS GROVE | 75 | Inactive |
| NORTHWEST SUBURBAN MUNICIPAL JAWA | ELK GROVE VILLAGE | 1 | Active |
| NORTHWEST WATER ASSOCIATION OF RUSHVILLE | RUSHVILLE | 71 | Inactive |
| NORTHWEST WATER COMMISSION | DES PLAINES | 1 | Active |
| NORTHWOOD & ISLAND LANE ASSN | NORTHWOOD & ISLAND LANE ASSN | 25 | Inactive |
| NORTHWOOD & ISLAND LN WTR ASSN | UNSPEC PL IN CO | 75 | Inactive |
| NUTWOOD WATER DISTRICT | FIELDON | 87 | Inactive |
| O FALLON | O'FALLON | 46,603 | Active |
| O'HARE AIR RSRV FORCES FCLTY | MAINE TWP | 1,500 | Inactive |
| OAK BROOK | OAK BROOK | 9,400 | Active |
| OAK FOREST | OAK FOREST | 27,478 | Active |
| OAK FOREST HEALTH CENTER | CHICAGO | 1,500 | Inactive |
| OAK GLEN NURSING HOME | COAL VALLEY | 0 | Inactive |
| OAK GROVE MHP | AURORA TWP | 230 | Inactive |
| OAK GROVE MHP | OTEGO TWP | 55 | Inactive |
| OAK GROVE MHP - MADISON COUNTY | FARMINGTON HILLS | 138 | Active |
| OAK GROVE MHP - ROCK ISLAND COUNTY | BETTENDORF | 138 | Active |
| OAK GROVE VILLAGE | FARMINGTON HILLS | 362 | Active |
| OAK HILL | OAK HILL | 25 | Inactive |
| OAK HILL ESTATES | OAK HILL ESTATES | 25 | Inactive |
| OAK HILL ESTATES | OAK HILL ESTATES | 25 | Inactive |
| OAK HILL WELL | OAK HILL WELL | 25 | Inactive |
| OAK LANE ACRES SUBDIVISION | MORTON | 120 | Active |
| OAK LANE MHC | DENVER | 388 | Active |
| OAK LANE MHP | OAK LANE MHP | 25 | Inactive |
| OAK LAWN | OAK LAWN | 58,362 | Active |
| OAK LAWN MHP | POPLAR GROVE | 450 | Active |
| OAK PARK | OAK PARK | 54,583 | Active |
| OAK PARK ESTATES | PERU | 185 | Active |
| OAK RIDGE MHP | MANTENO | 75 | Inactive |
| OAK RIDGE SANITARY DISTRICT | METAMORA | 300 | Active |
| OAK VIEW ESTATES | COAL VALLEY | 95 | Active |
| OAKBROOK ESTATES MHP | NORTHBROOK | 1,012 | Active |
| OAKBROOK TERRACE | OAKBROOK TERRACE | 1,440 | Active |
| OAKDALE ACRES SBDV | LIMESTONE TWP | 313 | Inactive |
| OAKFORD | OAKFORD | 234 | Active |
| OAKHAVEN SBDV | MORTON TWP | 26 | Inactive |
| OAKLAND | OAKLAND | 739 | Active |
| OAKLANE SBDV | OTTAWA | 63 | Active |
| OAKRIDGE SUBDIVISION | OAKRIDGE SUBDIVISION | 25 | Inactive |
| OAKWOOD ESTATES | SPRINGFIELD | 420 | Active |
| OAKWOOD PLACE SUBDIVISION | COAL VALLEY | 40 | Inactive |
| OAKWOOD WEST SUBDIVISION | COAL VALLEY | 57 | Active |
| OASIS MHP | NORMAL | 25 | Inactive |
| OASIS MHP | NORTHBROOK | 3,000 | Active |
| OBLONG | OBLONG | 2,321 | Active |
| ODELL | ODELL | 1,014 | Active |
| ODIN | ODIN | 2,543 | Active |
| OGDEN | OGDEN | 750 | Active |
| OGDEN GARDENS MIDDLEEAST | OGDEN GARDENS MIDDLEEAST | 25 | Inactive |
| OGDEN GARDENS SUBDIVISION | AURORA | 420 | Active |
| OGLE COUNTY HILL HAVEN M | OGLE COUNTY HILL HAVEN M | 40 | Inactive |
| OGLESBY | OGLESBY | 4,500 | Active |
| OHIO | OHIO | 465 | Active |
| OKAWVILLE | OKAWVILLE | 1,521 | Active |
| OLD DUQUOIN PWD | MARION | 785 | Inactive |
| OLD HICKORY WTR ASSN | HUDSON TWP | 230 | Inactive |
| OLD MAZON MHP | MAZON TWP | 25 | Inactive |
| OLD SALEM CHAUTAUQUA | PETERSBURG | 128 | Active |
| OLD SHAWNEETOWN | SHAWNEETOWN | 195 | Active |
| OLIVET NAZARENE UNIVERSITY | BOURBONNAIS | 1,050 | Inactive |
| OLIVET PWD | GEORGETOWN | 300 | Active |
| OLMSTED | OLMSTED | 435 | Active |
| OLNEY | OLNEY | 8,877 | Active |
| OLYMPIA FIELDS | OLYMPIA FIELDS | 4,922 | Active |
| OLYMPIA FIELDS COUNTRY CLUB | OLYMPIA FIELDS | 61 | Inactive |
| OMAHA | OMAHA | 234 | Active |
| ONARGA | ONARGA | 1,409 | Active |
| ONE LAND MARK PLAZA | UNSPEC PL IN CO | 25 | Inactive |
| ONEIDA | ONEIDA | 644 | Active |
| OPHIEM PWS | ALPHA | 110 | Active |
| OPPY SUBDIVISION | OPPY SUBDIVISION | 25 | Inactive |
| OQUAWKA | OQUAWKA | 1,125 | Active |
| ORANGEVILLE | ORANGEVILLE | 780 | Active |
| ORAVILLE WATER DISTRICT | AVA | 1,108 | Active |
| ORCHARD VIEW REHAB & HEALTH CARE CENTER | PRINCETON | 237 | Inactive |
| OREANA | FORSYTH | 892 | Active |
| OREGON | OREGON | 3,449 | Active |
| ORIENT | ORIENT | 362 | Active |
| ORION | ORION | 1,754 | Active |
| ORLAND HILL SBDV | ORLAND TWP | 140 | Inactive |
| ORLAND PARK | ORLAND PARK | 58,020 | Active |
| OSCO MUTUAL WATER SUPPLY COMPANY, INC. | OSCO | 80 | Active |
| OSWEGO | OSWEGO | 38,169 | Active |
| OTHO WILLIAMS RANCH | OTHO WILLIAMS RANCH | 25 | Inactive |
| OTTAWA | OTTAWA | 18,097 | Active |
| OTTAWA ESTATES MHP (FORMERLY DATTIS MHP) | LAKE FOREST | 70 | Active |
| OTTER CREEK LAKE UTILITIES DISTRICT | DAVIS | 2,342 | Active |
| OTTER CREEK WATER RECLAIMATION DISTRICT | BURR RIDGE | 5,025 | Inactive |
| OTTER LAKE WATER COMMISSION | VIRDEN | 1,318 | Active |
| OWANECO | OWANECO | 245 | Inactive |
| OWENS APTS | OWENS APTS | 25 | Inactive |
| OXBOW-WESTRIDGE WTR DSTRCT SYS | ROAD DIST 53 | 161 | Inactive |
| PALATINE | PALATINE | 70,875 | Active |
| PALM GARDENS MHP | QUINCY | 1 | Inactive |
| PALMER | PALMER | 250 | Active |
| PALMYRA | PALMYRA | 605 | Active |
| PALMYRA GRANGE HALL | PALMYRA GRANGE HALL | 25 | Inactive |
| PALMYRA-MODESTO WATER COMMISSION | MODESTO | 110 | Active |
| PALOS HEIGHTS | PALOS HEIGHTS | 15,500 | Active |
| PALOS HILLS | PALOS HILLS | 18,530 | Active |
| PALOS PARK | PALOS PARK | 4,873 | Active |
| PALOS PARK (WTR ASSN) | PALOS PARK (WTR ASSN) | 160 | Inactive |
| PALOS PARK BROOKSIDE S | PALOS PARK BROOKSIDE S | 40 | Inactive |
| PALOS PARK THE COMMONS | PALOS PARK THE COMMONS | 350 | Inactive |
| PANA | PANA | 5,800 | Active |
| PANAMA | AVISTON | 343 | Active |
| PAPINEAU | PAPINEAU | 25 | Inactive |
| PARADISE LANE | PARADISE LANE | 25 | Inactive |
| PARADISE LANE MHP | RIVERSIDE TWP | 97 | Inactive |
| PARADISE MANOR MHP | PERU | 200 | Active |
| PARADISE MHP | PHOENIX | 460 | Active |
| PARADISE TRAILER PARK | PARADISE TRAILER PARK | 25 | Inactive |
| PARIS | PARIS | 9,100 | Active |
| PARK CITY | PARK CITY | 5,425 | Active |
| PARK CITY MHP | PARK CITY | 2,460 | Active |
| PARK CREST WTR CMPNY | HARLEM TWP | 1,100 | Inactive |
| PARK FOREST | PARK FOREST | 21,687 | Active |
| PARK HILL ESTATES WATER CO #1 | PARK HILL ESTATES WATER CO #1 | 25 | Inactive |
| PARK HILL ESTATES WATER CO #3 | PARK HILL ESTATES WATER CO #3 | 25 | Inactive |
| PARK HILL ESTS WELL 1 | BLACKHAWK TWP | 25 | Inactive |
| PARK HILL ESTS WELL 2 | BLACKHAWK TWP | 25 | Inactive |
| PARK MEADOWLAND WEST MHP | GARDEN CITY | 100 | Active |
| PARK RIDGE | PARK RIDGE | 39,800 | Active |
| PARK RIDGE MHC | SARASOTA | 116 | Active |
| PARK ROAD WATER ASSOCIATION | JOLIET | 30 | Inactive |
| PARK VIEW WATER CORPORATION | AURORA | 150 | Inactive |
| PARKBROOK LANE | PARKBROOK LANE | 25 | Inactive |
| PARKBROOK LANE | PARKBROOK LANE | 25 | Inactive |
| PARKBROOK LANE LOT 34 WELL | SOUTH MOLINE TWP | 32 | Inactive |
| PARKERSBURG | PARKERSBURG | 356 | Active |
| PARKSIDE HILL | PARKSIDE HILL | 25 | Inactive |
| PARKVIEW MHP | NEW LENOX TWP | 32 | Inactive |
| PARKVIEW MHP | O FALLON TWP | 35 | Inactive |
| PATCH PLACE MHC | SPRINGFIELD | 47 | Active |
| PATOKA | PATOKA | 603 | Active |
| PATRIOTS LANDING | UNSPEC PL IN CO | 1,700 | Inactive |
| PATTERSON (INC AS WILMINGTON) | PATTERSON | 320 | Active |
| PATTERSON MHP | AURORA | 24 | Inactive |
| PAUL JAMES MHP | PAUL JAMES MHP | 25 | Inactive |
| PAULS MHP | PERU | 38 | Active |
| PAW PAW | PAW PAW | 830 | Active |
| PAWNEE | PAWNEE | 2,739 | Active |
| PAXTON | PAXTON | 4,200 | Active |
| PAYSON | PAYSON | 1,386 | Active |
| PEARL | NEBO | 166 | Active |
| PEARL CITY | PEARL CITY | 790 | Active |
| PECATONICA | PECATONICA | 2,195 | Active |
| PEKIN FED CORRECTIONAL INST AND PRSNCMP | PEKIN | 1,635 | Active |
| PEMBROKE TOWNSHIP | HOPKINS PARK | 1,410 | Active |
| PENFIELD PWD | PENFIELD | 150 | Active |
| PEORIA CO GIDEONSEN MHP | PEORIA | 146 | Inactive |
| PEORIA HEIGHTS | PEORIA HEIGHTS | 5,908 | Active |
| PERCY | PERCY | 961 | Active |
| PERE MARQUETTE STATE PARK | GRAFTON | 25 | Inactive |
| PERRY | PERRY | 388 | Active |
| PERU | PERU | 10,300 | Active |
| PESOTUM | PESOTUM | 0 | Inactive |
| PETERSBURG | PETERSBURG | 4,725 | Active |
| PETROLIA PWD | BRIDGEPORT | 1,275 | Active |
| PHEASANT KNOLLS SBDV | ELA TWP | 130 | Inactive |
| PHEASANT LAKE ESTATES MHP | BEECHER | 1,528 | Active |
| PHEASANT RUN MHP | COLDWATER | 350 | Active |
| PHIL-AIRE ESTATES MHP | ROCKTON | 80 | Active |
| PHOENIX | PHOENIX | 1,994 | Active |
| PIATT COUNTY NURSING HOME | MONTICELLO | 93 | Active |
| PIERRON | PIERRON | 1,709 | Active |
| PIKE COUNTY PWD 1 | PITTSFIELD | 5,375 | Active |
| PINCKNEYVILLE | PINCKNEYVILLE | 5,804 | Active |
| PINCKNEYVILLE CORRECTIONAL CENTER | PINCKNEYVILLE | 2,470 | Active |
| PINE RIDGE UTL INC | GENESEO TWP | 25 | Inactive |
| PINE SHORE APARTMENTS | CARBONDALE | 100 | Inactive |
| PINE VIEW APARTMENTS | GLENVIEW | 36 | Inactive |
| PINELANDS SUBDIVISION | PINELANDS SUBDIVISION | 25 | Inactive |
| PINEWOOD ESTATES MHP | MEDINA TWP | 450 | Inactive |
| PINGREE GROVE | PINGREE GROVE | 10,365 | Active |
| PIPER CITY | PIPER CITY | 875 | Active |
| PITTSBURG | PITTSBURG | 2,948 | Active |
| PITTSFIELD | PITTSFIELD | 4,697 | Active |
| PLAINFIELD | PLAINFIELD | 50,000 | Active |
| PLAINVILLE | BARRY | 264 | Active |
| PLANO | PLANO | 12,600 | Active |
| PLEASANT GROVE WATER SUPPLY CORPORATION | BUNCOMBE | 91 | Inactive |
| PLEASANT HILL | PLEASANT HILL | 1,004 | Active |
| PLEASANT HILL RD | PLEASANT HILL RD | 25 | Inactive |
| PLEASANT MEADOWS NURSING HOME | PLEASANT MEADOWS NURSING HOME | 25 | Inactive |
| PLEASANT PLAINS | PLEASANT PLAINS | 1,508 | Active |
| PLEASANT PLAINS MHP | PALESTINE | 42 | Inactive |
| PLEASANT RIDGE MHP | CHICAGO | 284 | Active |
| PLEASANT VALLEY PWD | PEORIA | 3,783 | Active |
| PLEASANT VIEW MHP | PLEASANT VIEW MHP | 25 | Inactive |
| PLUM CREEK CONDOS | WHEELING | 570 | Inactive |
| PLUM GROVE CONDOS | LIBERTYVILLE | 250 | Inactive |
| PLUMFIELD WATER DISTRICT | WEST FRANKFORT | 460 | Active |
| PLYMOUTH | PLYMOUTH | 460 | Active |
| POCAHONTAS | AVISTON | 697 | Active |
| POLO | POLO | 2,355 | Active |
| POLO DR AND SADDLE RD SUBDIVISION | WHEATON | 93 | Active |
| PONTIAC CORRECTIONAL CENTER | PONTIAC | 1,665 | Active |
| PONTOON BAPTIST CHURCH | NAMEOKI TWP | 30 | Inactive |
| PONTOON BEACH PWD | GRANITE CITY | 3,325 | Active |
| POOR CLARES MONASTERY | PALOS PARK | 6 | Inactive |
| POPLAR GROVE | POPLAR GROVE | 2,372 | Active |
| POPLAR GROVE OAKLAWN MHP | POPLAR GROVE OAKLAWN MHP | 25 | Inactive |
| POPLAR GROVE SOUTH | POPLAR GROVE | 1,877 | Active |
| POPLAR GROVE WEST-COUNTRYSIDE | POPLAR GROVE | 790 | Active |
| PORT BYRON | PORT BYRON | 1,678 | Active |
| PORT OF CALL | UNSPEC PL IN CO | 485 | Inactive |
| PORTS SULLIVAN LAKE OWNERS ASSOCIATION | LAKEMOOR | 293 | Active |
| POSEN | POSEN | 5,331 | Active |
| POSSUM BRANCH WTR ASSOCIATION | PINCKNEYVILLE | 182 | Inactive |
| POTOMAC | POTOMAC | 685 | Active |
| POWERS WATER CO, INC. | FOX RIVER GROVE | 216 | Active |
| PRAIRIE CITY | PRAIRIE CITY | 425 | Active |
| PRAIRIE DU ROCHER | PRAIRIE DU ROCHER | 759 | Active |
| PRAIRIE DUPONT PWD | EAST CARONDELET | 1,863 | Active |
| PRAIRIE KNOLLS SUBDIVISION | — | 0 | Inactive |
| PRAIRIE OAKS ESTS HOMEOWNERS ASSN | COAL CITY | 107 | Active |
| PRAIRIE PATH -PORT BARRINGTON SHORES | MCHENRY | 67 | Active |
| PRAIRIE PATH WATER CO-COVENTRY CREEK | MCHENRY | 270 | Active |
| PRAIRIE PATH WATER CO-WHISPERING HILLS | MCHENRY | 8,300 | Active |
| PRAIRIE PATH WATER COMPANY-APPLE CANYON | GALENA | 931 | Active |
| PRAIRIE PATH WATER COMPANY-CAMELOT | ST. CHARLES | 777 | Active |
| PRAIRIE PATH WATER COMPANY-CEDAR WATER | OAKWOOD | 172 | Active |
| PRAIRIE PATH WATER COMPANY-CHAR-MAR | MCHENRY | 186 | Active |
| PRAIRIE PATH WATER COMPANY-CHERRY HILL | ST. CHARLES | 833 | Active |
| PRAIRIE PATH WATER COMPANY-CLARENDON | ST. CHARLES | 850 | Active |
| PRAIRIE PATH WATER COMPANY-COVENTRY HILL | MCHENRY | 608 | Active |
| PRAIRIE PATH WATER COMPANY-DEL-MAR | MCHENRY | 300 | Active |
| PRAIRIE PATH WATER COMPANY-FERSON CREEK | ST. CHARLES | 1,134 | Active |
| PRAIRIE PATH WATER COMPANY-GALENA | GALENA | 2,294 | Active |
| PRAIRIE PATH WATER COMPANY-HARBOR RIDGE | MCHENRY | 1,064 | Active |
| PRAIRIE PATH WATER COMPANY-HOLIDAY HILLS | MCHENRY | 868 | Active |
| PRAIRIE PATH WATER COMPANY-KILLARNEY | MCHENRY | 1,232 | Active |
| PRAIRIE PATH WATER COMPANY-LAKE HOLIDAY | ST. CHARLES | 4,750 | Active |
| PRAIRIE PATH WATER COMPANY-LAKE MARIAN | MCHENRY | 1,022 | Active |
| PRAIRIE PATH WATER COMPANY-LAKE WILDWOOD | OAKWOOD | 1,295 | Active |
| PRAIRIE PATH WATER COMPANY-NORTHERN HILL | MCHENRY | 600 | Active |
| PRAIRIE PATH WATER COMPANY-OAKWOOD | MCHENRY | 1,600 | Active |
| PRAIRIE PATH WATER COMPANY-ROCKVALE | MCHENRY | 298 | Active |
| PRAIRIE PATH WATER COMPANY-VALENTINE | MCHENRY | 252 | Active |
| PRAIRIE PATH WATER COMPANY-WALK UP WOODS | MCHENRY | 775 | Active |
| PRAIRIE PATH WATER COMPANY-WESTLAKE | MCHENRY | 1,493 | Active |
| PRAIRIE PATH WATER COMPANY-WILDWOOD | MCHENRY | 490 | Active |
| PRAIRIE PATH WATER-BAHL WATER COMPANY | GALENA | 700 | Active |
| PRAIRIE RIDGE ASSOCIATION | SCHAUMBURG | 148 | Active |
| PRAIRIE ROAD PUMP CORPORATION | ROCKFORD | 150 | Active |
| PRAIRIE TRAILS OF LONG GROVE | LONG GROVE | 189 | Active |
| PRAIRIE VIEW ACRES MHP | TUSCOLA TWP | 25 | Inactive |
| PRAIRIE VIEW WATER ASSOCIATION | WASHINGTON | 21 | Inactive |
| PRAIRIETOWN RD WTR ASSN | DORCHESTER TWP | 135 | Inactive |
| PRAIRIEVIEW LUTHERAN HOME | DANFORTH | 113 | Active |
| PRICE MHP | HAMPTON TWP | 75 | Inactive |
| PRICE'S BREEZY ACRES | PRICE'S BREEZY ACRES | 25 | Inactive |
| PRINCETON | PRINCETON | 7,832 | Active |
| PRINCEVILLE | PRINCEVILLE | 1,901 | Active |
| PROMONTORY POINTE HOMEOWNERS ASSOCIATION | LAKE ZURICH | 78 | Active |
| PROPHETSTOWN | PROPHETSTOWN | 2,100 | Active |
| PROSPECT HEIGHTS | PROSPECT HEIGHTS | 2,280 | Active |
| PROSPECT WATER DISTRICT | HARRISBURG | 1,140 | Active |
| PROVIDENCE AT PAINTED LAKES | LAKE VILLA | 1,650 | Inactive |
| PULASKI | PULASKI | 202 | Active |
| PUTNAM WTR ASSN | SENACHWINE TWP | 35 | Inactive |
| QUAD-CITY AIRPORT | COAL VALLEY TWP | 50 | Inactive |
| QUAIL RUN MOBILE HOME PARK | EDWARDSVILLE | 168 | Active |
| QUAIL RUN SUBDIVISION | QUAIL RUN SUBDIVISION | 25 | Inactive |
| QUAIL RUN WELL ASSN | BLACKHAWK TWP | 28 | Inactive |
| QUANTUM CHEM CORP-USI DVN | GARRETT TWP | 1,175 | Inactive |
| QUINCY | QUINCY | 42,000 | Active |
| RACCOON WATER COMPANY | CENTRALIA | 7,080 | Active |
| RADOM | NASHVILLE | 193 | Active |
| RAINBOW LANE MHP | ROCKFORD | 83 | Active |
| RAINBOW RIDGE | MILAN | 91 | Active |
| RALEIGH WATER DISTRICT | RALEIGH | 605 | Active |
| RAMSEY | RAMSEY | 966 | Active |
| RAND ESTS SBDV | LAKE ZURICH | 78 | Inactive |
| RANGELAND PARK MHP | O FALLON TWP | 55 | Inactive |
| RANKIN | RANKIN | 500 | Active |
| RANTOUL | RANTOUL | 13,000 | Active |
| RAPIDS CITY | RAPIDS CITY | 962 | Active |
| RARITAN | RARITAN | 180 | Active |
| RAY ANDERSON | RAY ANDERSON | 25 | Inactive |
| RAYMOND | RAYMOND | 974 | Active |
| RE WATER CORPORATION | DIETERICH | 1,513 | Inactive |
| RECOVERY CENTERS OF AMERICA | ST. CHARLES | 130 | Active |
| RED BUD | RED BUD | 3,804 | Active |
| REDDICK | PERU | 196 | Active |
| REDMON | REDMON | 199 | Inactive |
| REMOLE SBDV | DANVILLE TWP | 95 | Inactive |
| REND CITY PWD | UNSPEC PL IN CO | 61 | Inactive |
| REND LAKE INTER-CITY WATER SYSTEM | BENTON | 3,650 | Active |
| REND LAKE MOBILE HOME PARK | FORT MILL | 65 | Active |
| RETZ ADDN IMPROVEMENT ASSOCIATION | OTTAWA | 168 | Active |
| REUL'S MHP | REUL'S MHP | 25 | Inactive |
| REYNOLDS | REYNOLDS | 508 | Active |
| RICHARD'S APTS | RICHARD'S APTS | 25 | Inactive |
| RICHARD'S APTS | RICHARD'S APTS | 25 | Inactive |
| RICHMOND | RICHMOND | 2,089 | Active |
| RICHTON PARK | RICHTON PARK | 12,504 | Active |
| RICHVIEW | RICHVIEW | 251 | Active |
| RICHWOOD MANOR MHP | UNSPEC PL IN CO | 120 | Inactive |
| RIDGE FARM | RIDGE FARM | 973 | Active |
| RIDGE VILLAGE MHP | SPRINGFIELD | 120 | Active |
| RIDGECREST NORTH SUBDIVISION | MORRIS | 60 | Active |
| RIDGEVIEW MHP | CLINTON | 40 | Inactive |
| RIDGEWOOD LEDGES WATER ASSOCIATION | MILAN | 300 | Active |
| RIDGEWOOD SUBDIVISION | JOLIET | 250 | Inactive |
| RIDGWAY | RIDGWAY | 874 | Active |
| RINGO MHP | RINGO MHP | 25 | Inactive |
| RIO | RIO | 265 | Active |
| RIPLEY | RIPLEY | 250 | Active |
| RIVER CREST MHP | RIVER CREST MHP | 25 | Inactive |
| RIVER EAST VILLAGE MHP | VERNON HILLS | 65 | Active |
| RIVER FOREST | RIVER FOREST | 11,717 | Active |
| RIVER GROVE | RIVER GROVE | 10,282 | Active |
| RIVER OAKS ESTATES MHP | BLOOMFIELD HILLS | 677 | Active |
| RIVER OAKS MHP | SPRINGFIELD | 0 | Inactive |
| RIVER ROAD MHP | FREEPORT | 1 | Inactive |
| RIVER ROAD MHP | RIVER ROAD MHP | 25 | Inactive |
| RIVERCREST MHP | CHEBANSE | 17 | Inactive |
| RIVERDALE | RIVERDALE | 10,266 | Active |
| RIVERSIDE | RIVERSIDE | 9,298 | Active |
| RIVERSIDE ESTATES MHP | COLORADO SPRINGS | 120 | Active |
| RIVERSIDE MHP | WILMINGTON TWP | 25 | Inactive |
| RIVERTON | RIVERTON | 4,279 | Active |
| RIVERVIEW MHP (HENRY COUNTY) | GENESEO | 21 | Inactive |
| RIVERVIEW MHP (WINNEBAG0) | ROCKFORD | 214 | Inactive |
| RIVERWOODS | VERNON HILLS | 3,618 | Active |
| RIVERWOODS SPECIAL SERVICE DISTRICT 3 | RIVERWOODS | 234 | Inactive |
| RIVERWOODS-SPCL SRVC DSTRCT 17 | RIVERWOODS | 45 | Inactive |
| ROANOKE | ROANOKE | 2,000 | Active |
| ROBBINS | ROBBINS | 5,415 | Active |
| ROBERT ORWIG | ROBERT ORWIG | 25 | Inactive |
| ROBERT RUDE | ROBERT RUDE | 25 | Inactive |
| ROBERTS | ROBERTS | 367 | Active |
| ROBIN HOOD WOODS | ROBIN HOOD WOODS | 25 | Inactive |
| ROBINSON CORRECTIONAL CENTER | DIETERICH | 1,085 | Active |
| ROBINSON-PALESTINE WATER COMMISSION | ROBINSON | 11,331 | Active |
| ROCCO MULETTO APT COMPLEX | ROCCO MULETTO APT COMPLEX | 25 | Inactive |
| ROCHELLE | ROCHELLE | 9,446 | Active |
| ROCHESTER | ROCHESTER | 3,856 | Active |
| ROCK CITY | ROCK CITY | 313 | Active |
| ROCK CUT MHP | ROCK CUT MHP | 25 | Inactive |
| ROCK FALLS | ROCK FALLS | 8,620 | Active |
| ROCK ISLAND | ROCK ISLAND | 39,018 | Active |
| ROCK ISLAND ARSENAL, US ARMY | ROCK ISLAND | 7,800 | Active |
| ROCK ISLAND CO BLKHWK VILL | — | 28 | Inactive |
| ROCK ISLAND CO CREST VIEW DR 1 | — | 32 | Inactive |
| ROCK ISLAND CO CREST VIEW DR 2 | — | 32 | Inactive |
| ROCK ISLAND CO FORREST VIEW 1 | — | 32 | Inactive |
| ROCK ISLAND CO FORREST VIEW 2 | — | 32 | Inactive |
| ROCK ISLAND CO INDIAN BLFS 1 | — | 32 | Inactive |
| ROCK ISLAND CO INDIAN BLFS 2 | — | 32 | Inactive |
| ROCK ISLAND CO MERRY OAKS 3 W6 | — | 32 | Inactive |
| ROCK ISLAND CO RIVER EST 1ST | — | 32 | Inactive |
| ROCK ISLAND COUNTY BALCEAN 3RD | ROCK ISLAND COUNTY BALCEAN 3RD | 28 | Inactive |
| ROCK ISLAND COUNTY BLACKHAWK A | ROCK ISLAND COUNTY BLACKHAWK A | 32 | Inactive |
| ROCK ISLAND COUNTY BLACKHAWK W | ROCK ISLAND COUNTY BLACKHAWK W | 32 | Inactive |
| ROCK ISLAND COUNTY M.F.&B. WEL | ROCK ISLAND COUNTY M.F.&B. WEL | 60 | Inactive |
| ROCK ISLAND COUNTY MILL CREEK | ROCK ISLAND COUNTY MILL CREEK | 28 | Inactive |
| ROCK ISLAND COUNTY OAK HEIGHTS | ROCK ISLAND COUNTY OAK HEIGHTS | 25 | Inactive |
| ROCK ISLAND COUNTY PARKBROOK L | ROCK ISLAND COUNTY PARKBROOK L | 31 | Inactive |
| ROCK ISLAND COUNTY RIVER EDGE | ROCK ISLAND COUNTY RIVER EDGE | 25 | Inactive |
| ROCK ISLAND COUNTY TINDALLS 1S | ROCK ISLAND COUNTY TINDALLS 1S | 32 | Inactive |
| ROCK ISLAND COUNTY WITTER'S 1S | ROCK ISLAND COUNTY WITTER'S 1S | 32 | Inactive |
| ROCK RIVER ESTATES MHP | DIXON | 400 | Active |
| ROCKBRIDGE | ROCKBRIDGE | 180 | Active |
| ROCKDALE | ROCKDALE | 2,012 | Active |
| ROCKFORD | ROCKFORD | 147,051 | Active |
| ROCKLAND TRAILER PK SALES | ROCKLAND TRAILER PK SALES | 25 | Inactive |
| ROCKTON | ROCKTON | 7,685 | Active |
| ROCKY HOLLOW WATER DISTRICT | BUTLER | 40 | Inactive |
| ROGERS MHP | CHARLESTON TWP | 25 | Inactive |
| ROLLING ACRES MHP | BUCKHEART TWP | 25 | Inactive |
| ROLLING ACRES SBDV | UNSPEC PL IN CO | 25 | Inactive |
| ROLLING GREEN ESTATES MHP | CHICAGO | 191 | Active |
| ROLLING MEADOWS | ROLLING MEADOWS | 23,329 | Active |
| ROLLING MEADOWS MHC | CLEARWATER | 447 | Active |
| ROLLING MEADOWS MHC (JEFFERSON CO) | DESTIN | 218 | Active |
| ROLLING MEADOWS-FOXGLOVE | CLEARWATER | 70 | Active |
| ROME FARMS #9 | CHILLICOTHE TWP | 200 | Inactive |
| ROMEOVILLE | ROMEOVILLE | 50,458 | Active |
| ROODHOUSE | ROODHOUSE | 1,753 | Active |
| ROSEBUD MHP | BRIDGEVIEW | 2,250 | Inactive |
| ROSELLE | ROSELLE | 22,897 | Active |
| ROSEMONT | ROSEMONT | 3,952 | Active |
| ROSEVILLE | ROSEVILLE | 915 | Active |
| ROSEWOOD TRACE SBDV | DOWNERS GR TWP | 5,500 | Inactive |
| ROSICLARE | BELLEVILLE | 1,387 | Inactive |
| ROSING LAKEVIEW WATER ASSOCIATION | ANTIOCH | 1 | Inactive |
| ROSSVILLE | ROSSVILLE | 1,331 | Active |
| ROUND LAKE | ROUND LAKE | 18,430 | Active |
| ROUND LAKE BEACH | ROUND LAKE BEACH | 27,200 | Active |
| ROUND LAKE HEIGHTS | ROUND LAKE HEIGHTS | 2,622 | Active |
| ROUND LAKE PARK | ROUND LAKE PARK | 4,900 | Active |
| ROUND PRAIRIE WATER COOP | DIETERICH | 813 | Active |
| ROXANA | ROXANA | 1,509 | Active |
| ROYAL | ROYAL | 273 | Active |
| ROYAL LAKE WATER DISTRICT | MULBERRY GROVE | 150 | Inactive |
| ROYAL LAKES | ROYAL LAKES | 235 | Active |
| ROYAL MELBOURNE HOMEOWNERS ASN | SCHAUMBURG | 382 | Active |
| ROYAL OAKS ESTATES | PEORIA | 865 | Inactive |
| ROYAL OAKS MHP | CHICAGO | 170 | Active |
| ROYALTON | ROYALTON | 1,118 | Active |
| RR1-IL WTR ASSN | STAUNTON TWP | 87 | Inactive |
| RUMA | RUMA | 341 | Active |
| RURAL WABASH COUNTY WATER DISTRICT | LANCASTER | 1,877 | Active |
| RUSHVILLE | EAST PEORIA | 3,375 | Active |
| RUSK HAVEN HOME | RUSK HAVEN HOME | 25 | Inactive |
| RUSTIC ACRES WATER ASSOCIATION | COLONA | 260 | Active |
| RUTLAND | RUTLAND | 259 | Active |
| RYANS HOMES | RYANS HOMES | 25 | Inactive |
| S JACKSON ST COMMUNITY WELL | S JACKSON ST COMMUNITY WELL | 25 | Inactive |
| S L M WATER COMMISSION | MASCOUTAH | 385 | Active |
| SADDLEBROOK ESTATES SUBDIVISION | WASHINGTON | 62 | Inactive |
| SADDLEBROOK FARMS | GRAYSLAKE | 2,558 | Active |
| SAFARI CAMPGROUNDS | SAFARI CAMPGROUNDS | 25 | Inactive |
| SAILOR SPRINGS (EJ WTR CORP) | SAILOR SPRINGS | 136 | Inactive |
| SAINTE MARIE | DIETERICH | 243 | Active |
| SALEM | SALEM | 7,905 | Active |
| SALEM CHILDRENS HM | NEBRASKA TWP | 44 | Inactive |
| SALEM CHILDRENS HOME | SALEM CHILDRENS HOME | 25 | Inactive |
| SALINE VALLEY CONSERVANCY DISTRICT | ELDORADO | 3,921 | Active |
| SAN JOSE | SAN JOSE | 479 | Active |
| SANDOVAL | SANDOVAL | 1,528 | Active |
| SANDWICH | SANDWICH | 7,156 | Active |
| SANDWICH DUN-ROVIN MHP | SANDWICH DUN-ROVIN MHP | 25 | Inactive |
| SANDWICH ESTATES MHP | CHICAGO | 90 | Active |
| SANDWICH MHP | SANDWICH MHP | 25 | Inactive |
| SANGAMON VALLEY PWD | MAHOMET | 5,300 | Active |
| SANTA FE ESTATES WATER ASSOCIATION | CHILLICOTHE | 68 | Active |
| SANTA FE MNP | LYONS TWP | 88 | Inactive |
| SANTA FE RANCH | SANTA FE RANCH | 25 | Inactive |
| SAUK | SAUK VILLAGE | 9,921 | Active |
| SAUK VALLEY STUDENT HOUSING | DIXON | 75 | Inactive |
| SAVANNA | SAVANNA | 3,020 | Active |
| SAVANNA ARMY DEPOT | SAVANNA TWP | 25 | Inactive |
| SAVE SITE | FREEBURG TWP | 400 | Inactive |
| SAWYERVILLE | SAWYERVILLE | 578 | Active |
| SAYBROOK | SAYBROOK | 679 | Active |
| SCALES MOUND | SCALES MOUND | 436 | Active |
| SCARBORO ELEVATOR | SCARBORO ELEVATOR | 25 | Inactive |
| SCHAUMBURG | SCHAUMBURG | 75,750 | Active |
| SCHILLER PARK | SCHILLER PARK | 11,709 | Active |
| SCHMID LAKE SUBDIVISION | SUGAR LOAF TWP | 43 | Inactive |
| SCHRAM CITY | HILLSBORO | 563 | Active |
| SCHULTZ LOT WATER SYSTEM | SCHULTZ LOT WATER SYSTEM | 25 | Inactive |
| SCHWERMANNS 2ND AND 3RD WTR BRD | MUNDELEIN | 285 | Active |
| SCIOTA | SCIOTA | 180 | Active |
| SCOTT AFB PROPERTIES LLC | — | 3,765 | Inactive |
| SCOTT COUNTY RURAL WATER CO-OP | WINCHESTER | 493 | Active |
| SCOTTS | SCOTTS | 25 | Inactive |
| SCOTTS MHP | HAVANA TWP | 30 | Inactive |
| SCOTTSDALE MHC | SPRINGFIELD | 114 | Active |
| SCOTTVILLE RURAL WATER COMPANY, INC. | PALMYRA | 695 | Active |
| SCRIBNER STREET SBDV | JOLIET TWP | 87 | Inactive |
| SEATON | MUSCATINE | 214 | Active |
| SEATONVILLE | SEATONVILLE | 321 | Active |
| SECOR | SECOR | 351 | Active |
| SEDAM-HEGEMAN ADD WELL #1 | SEDAM-HEGEMAN ADD WELL #1 | 25 | Inactive |
| SEDAM-HEGEMAN ADD WELL #2 | SEDAM-HEGEMAN ADD WELL #2 | 25 | Inactive |
| SEDAMS GOLDEN ACRE WELL | SEDAMS GOLDEN ACRE WELL | 25 | Inactive |
| SEDGEBROOK DVL | PINGREE GROVE | 1,200 | Inactive |
| SENECA | SENECA | 2,353 | Active |
| SENECA MOBILE HOMES LLC | MORRIS | 10 | Active |
| SENESAC & SONS MHP | BOURBONNAIS TWP | 30 | Inactive |
| SESSER | SESSER | 2,556 | Active |
| SEYMOUR WATER DISTRICT | SEYMOUR | 392 | Active |
| SHABBONA | SHABBONA | 913 | Active |
| SHADOW LAKES RESORT | REED TWP | 1,200 | Inactive |
| SHADOW WOOD MHP | CHAMPAIGN | 680 | Active |
| SHADY GROVE MHP | WEST LINCOLN TWP | 0 | Inactive |
| SHADY KNOLL MHP | BLOOMINGTON TWP | 25 | Inactive |
| SHADY KNOLL MHP | SHADY KNOLL MHP | 25 | Inactive |
| SHADY LANE MHP | SHADY LANE MHP | 25 | Inactive |
| SHADY NOOK | STERLING TWP | 25 | Inactive |
| SHADY OAKS MHP | CHICAGO | 912 | Active |
| SHAMEL MANOR | SHAMEL MANOR | 25 | Inactive |
| SHANGRI-LA MHP | BARRINGTON | 475 | Active |
| SHANNON | SHANNON | 801 | Active |
| SHARPSBURG AND NEIGHBORING AREA WATER SY | STONINGTON | 868 | Active |
| SHAWNEE CORRECTIONAL CENTER | DIETERICH | 1,617 | Active |
| SHAWNEE SHELTER CARE | SHAWNEE SHELTER CARE | 25 | Inactive |
| SHAWNEE VALLEY PWD | WOLF LAKE | 738 | Active |
| SHAWNEETOWN | SHAWNEETOWN | 1,054 | Active |
| SHAWNITA TRC WATER ASSOCIATION | JOLIET | 135 | Inactive |
| SHEFFIELD | KEWANEE | 821 | Active |
| SHELBYVILLE | SHELBYVILLE | 5,600 | Active |
| SHELDON | SHELDON | 900 | Active |
| SHERIDAN CORRECTIONAL CENTER | SHERIDAN | 1,670 | Active |
| SHERMAN (VILLA VIANNY) | — | 30 | Inactive |
| SHERRARD | SHERRARD | 785 | Active |
| SHILOH | SHILOH | 4,000 | Inactive |
| SHIPMAN | SHIPMAN | 541 | Active |
| SHO-DEEN SBDV | BLACKBERRY TWP | 11,200 | Inactive |
| SHORELINE TERRACE MHP | SHORELINE TERRACE MHP | 25 | Inactive |
| SHORELINE TRC MHP | CHICAGO | 504 | Active |
| SHOREWOOD | SHOREWOOD | 18,645 | Active |
| SHUMWAY | UNSPEC PL IN CO | 278 | Inactive |
| SIBLEY | SIBLEY | 245 | Active |
| SIDELL | SIDELL | 557 | Active |
| SIDNEY | SIDNEY | 1,250 | Inactive |
| SIGEL | ALTAMONT | 386 | Active |
| SIKKEMA #1 MHP | SIKKEMA #1 MHP | 25 | Inactive |
| SIKKEMA #2 MHP | SIKKEMA #2 MHP | 25 | Inactive |
| SILO MHP | LYNWOOD | 25 | Inactive |
| SILVER GLEN HOMEOWNER'S ASSOCIATION | ST. CHARLES | 595 | Active |
| SILVIS | SILVIS | 7,473 | Active |
| SILVIS HEIGHTS WATER CORP | SILVIS | 1,450 | Active |
| SIMS | SIMS | 244 | Active |
| SIMS MHP | SIMS MHP | 25 | Inactive |
| SINGER MHC | ROCKFORD TWP | 500 | Inactive |
| SIU PROPERTIES VIA CARBONDALE | CARBONDALE TWP | 6,354 | Inactive |
| SIU SCH DENTAL MEDICINE-ALTON | ALTON | 375 | Inactive |
| SIX OAKS MHP | WHEATON | 48 | Active |
| SKOKIE | SKOKIE | 66,422 | Active |
| SKYVIEW ESTATES | MOMENCE | 56 | Active |
| SLEEPY HOLLOW | SLEEPY HOLLOW | 3,100 | Active |
| SLEEPY HOLLOW WATER CORP | SLEEPY HOLLOW WATER CORP | 1,543 | Inactive |
| SMG - LYNNVILLE | WINCHESTER | 130 | Active |
| SMG WATER COOP | WINCHESTER | 3,110 | Active |
| SMITHBORO | SMITHBORO | 188 | Active |
| SMITHFIELD | SMITHFIELD | 375 | Active |
| SMITHTON | SMITHTON | 4,006 | Active |
| SNAKE TRAIL WTR ASSN | TEUTOPOLIS | 120 | Active |
| SOMONAUK | SOMONAUK | 1,860 | Active |
| SORENTO | AVISTON | 429 | Active |
| SOUTH BARRINGTON | GENEVA | 1,175 | Active |
| SOUTH BLUFF MHP | SANDY | 507 | Active |
| SOUTH BURDETTE WTR | BLOOMINGDALE TWP | 25 | Inactive |
| SOUTH CHICAGO HEIGHTS | SOUTH CHICAGO HEIGHTS | 3,924 | Active |
| SOUTH CRIPPLE CREEK WTR ASSN | ROAD DIST 53 | 99 | Inactive |
| SOUTH DALE SUBDIVISION | SOUTH DALE SUBDIVISION | 25 | Inactive |
| SOUTH ELGIN | SOUTH ELGIN | 23,648 | Active |
| SOUTH FULTON WATER DISTRICT | ASTORIA | 1,430 | Active |
| SOUTH GROVE SBDV | DOWNERS GR TWP | 40 | Inactive |
| SOUTH HIGHWAY PWD | MAKANDA | 4,972 | Active |
| SOUTH HOLLAND | SOUTH HOLLAND | 22,000 | Active |
| SOUTH JACKSONVILLE | SOUTH JACKSONVILLE | 3,508 | Active |
| SOUTH LAWRENCE WATER CORP | SUMNER | 1,195 | Active |
| SOUTH PALMYRA WATER COMMISSION | PALMYRA | 838 | Active |
| SOUTH PALOS TWSP SANITARY DIST | PALOS PARK | 2,800 | Active |
| SOUTH PEKIN | SOUTH PEKIN | 996 | Active |
| SOUTH RIDGE MHC | JOLIET | 96 | Active |
| SOUTH ROXANA | SOUTH ROXANA | 1,891 | Active |
| SOUTH SANGAMON WATER COMMISSION | ROCHESTER | 134 | Active |
| SOUTH STICKNY SD | BURBANK | 30,000 | Active |
| SOUTH WELL 16 | BLACKHAWK TWP | 32 | Inactive |
| SOUTH WILMINGTON | SOUTH WILMINGTON | 700 | Active |
| SOUTHEAST JOLIET SD | JOLIET | 2,000 | Active |
| SOUTHEAST REGIONAL WATER FACILITY | DARIEN | 6,940 | Active |
| SOUTHEASTERN ILLINOIS COLLEGE | — | 25 | Inactive |
| SOUTHERN IL UNIVERSITY-EDWARDSVILLE | EDWARDSVILLE | 2,817 | Active |
| SOUTHGATE ESTATES MHC | — | 996 | Inactive |
| SOUTHLAND MHP | MELROSE TWP | 36 | Inactive |
| SOUTHWATER INC | TAMMS | 2,185 | Active |
| SOUTHWESTERN IL CORRECTIONAL CENTER | EAST ST. LOUIS | 563 | Active |
| SOUTHWIND MOBILE ESTATES | KEWANEE | 200 | Inactive |
| SPARLAND | SPARLAND | 358 | Active |
| SPARTA | SPARTA | 4,395 | Active |
| SPENCE MORRIS | SPENCE MORRIS | 25 | Inactive |
| SPIN LAKE HOMEOWNERS ASSOCIATION, INC. | DANVERS | 200 | Active |
| SPOON RIVER COLLEGE | — | 25 | Inactive |
| SPRING ACRES | SPRING ACRES | 25 | Inactive |
| SPRING BLUFF SBDV | UNSPEC PL IN CO | 25 | Inactive |
| SPRING CREEK WTR ASSN | CAHOKIA TWP | 72 | Inactive |
| SPRING LAKE CNTRYCLB | RIVERSIDE TWP | 75 | Inactive |
| SPRING LAKES MHP | ELGIN | 904 | Active |
| SPRING VALLEY | SPRING VALLEY | 5,582 | Active |
| SPRING VALLEY MHP | SHILOH VAL TWP | 40 | Inactive |
| SPRINGCREEK CAMPGROUND,II, INC | DANFORTH TWP | 34 | Inactive |
| SPRINGERTON | SPRINGERTON | 176 | Active |
| SPRINGFIELD | SPRINGFIELD | 117,444 | Active |
| SRY MHP | SRY MHP | 25 | Inactive |
| ST ANNE | ST ANNE | 1,200 | Active |
| ST AUGUSTINE | MONMOUTH | 119 | Active |
| ST CHARLES | ST. CHARLES | 33,103 | Active |
| ST CHARLES CMNTY WLFND 2 | BLOOMINGDALE TWP | 30 | Inactive |
| ST CHARLES COMMSSION WELLFUND 3 | CAROL STREAM | 24 | Inactive |
| ST CHARLES COMMUNITY WELL FUND | ST CHARLES COMMUNITY WELL FUND | 25 | Inactive |
| ST CHARLES COMMUNITY WELL FUND | ST CHARLES COMMUNITY WELL FUND | 25 | Inactive |
| ST CHARLES COMMUNITY WELL FUND | ST CHARLES COMMUNITY WELL FUND | 25 | Inactive |
| ST CHARLES COMMUNITY WELL FUND | ST CHARLES COMMUNITY WELL FUND | 25 | Inactive |
| ST CHARLES COMMUNITY WELL FUND | ST CHARLES COMMUNITY WELL FUND | 25 | Inactive |
| ST CHARLES COMMUNITY WELL FUND | ST CHARLES COMMUNITY WELL FUND | 25 | Inactive |
| ST CHARLES COMMUNITY WELL FUND | ST CHARLES COMMUNITY WELL FUND | 25 | Inactive |
| ST CLAIR COUNTY COZY ACRES | ST CLAIR COUNTY COZY ACRES | 56 | Inactive |
| ST DAVID | ST DAVID | 950 | Inactive |
| ST ELMO | ST ELMO | 1,272 | Active |
| ST FRANCISVILLE | ST. FRANCISVILLE | 583 | Active |
| ST JACOB | ST. JACOB | 1,835 | Active |
| ST JOSEPH | ST JOSEPH | 2,391 | Inactive |
| ST LIBORY | SWANSEA | 628 | Active |
| ST OF ILL CHESTER M H CENTER | — | 500 | Inactive |
| ST OF ILL CHI CIRCLE CAMPUS | — | 20,000 | Inactive |
| ST OF ILL CHI MH MED CTR COMPL | — | 1,000 | Inactive |
| ST OF ILL CHI STATE UNIV | — | 6,800 | Inactive |
| ST OF ILL J'VLLE M H CENTER | — | 889 | Inactive |
| ST OF ILL MADDEN MH CENTER | — | 1,000 | Inactive |
| ST OF ILL MCFARLAND M H CENTER | — | 560 | Inactive |
| ST OF ILL MEYER MH CENTER | — | 250 | Inactive |
| ST OF ILL NORTHEASTERN IL UNIV | — | 10,000 | Inactive |
| ST OF ILL SANGAMON ST UNIV | SPRINFFIELD | 150 | Inactive |
| ST OF ILL SCH FOR THE DEAF | — | 820 | Inactive |
| ST OF ILL SCH FOR VIS IMPAIRED | — | 280 | Inactive |
| ST OF ILL SIU E ST LOUIS | — | 780 | Inactive |
| ST OF ILL SIU PROP CARTERVL | — | 25 | Inactive |
| ST OF ILL SIU PROP SO HIGHWAY | — | 5,800 | Inactive |
| ST OF ILL UOFI DRUG HORT EXPT | — | 25 | Inactive |
| ST OF ILL UOFI MED CENTER CAMP | — | 5,000 | Inactive |
| ST PETER | ST PETER | 483 | Active |
| ST ROSE PWD | ST ROSE | 1,688 | Active |
| STANDARD | STANDARD | 203 | Active |
| STANFORD | STANFORD | 600 | Active |
| STARK COUNTY CASTLETON | STARK COUNTY CASTLETON | 38 | Inactive |
| STATE OF ILLINOIS BISHOP HILL | STATE OF ILLINOIS | 0 | Inactive |
| STATE OF ILLINOIS E LUDEMAN DE | STATE OF ILLINOIS E LUDEMAN DE | 1,000 | Inactive |
| STATE OF ILLINOIS FT CHARTRES | STATE OF ILLINOIS | 0 | Inactive |
| STATE OF ILLINOIS FT KASKASKI | STATE OF ILLINOIS | 0 | Inactive |
| STATE OF ILLINOIS MARKET HOUS | STATE OF ILLINOIS | 0 | Inactive |
| STATE OF ILLINOIS PEORIA COMM | STATE OF ILLINOIS PEORIA COMM | 61 | Inactive |
| STATE OF ILLINOIS SHAPIRO DEVE | STATE OF ILLINOIS SHAPIRO DEVE | 1,200 | Inactive |
| STATE OF ILLINOIS SHAWNEETOWN | STATE OF ILLINOIS | 0 | Inactive |
| STATE OF ILLINOIS ULYSSES S G | STATE OF ILLINOIS | 0 | Inactive |
| STATE OF ILLINOIS VANDALIA ST | STATE OF ILLINOIS | 0 | Inactive |
| STATE OF ILLINOIS WARREN G. MU | STATE OF ILLINOIS WARREN G. MU | 100 | Inactive |
| STATE OF ILLINOIS WAUKEGAN DEV | STATE OF ILLINOIS WAUKEGAN DEV | 710 | Inactive |
| STATEVILLE CORRECTIONAL CENTER | CREST HILL | 992 | Active |
| STAUNTON | STAUNTON | 5,756 | Active |
| STAUNTON RESERVOIR ROAD WATER COOP | STAUNTON | 63 | Inactive |
| STEELEVILLE | STEELEVILLE | 1,960 | Active |
| STEEPLE RUN SBDV | DARIEN | 1,931 | Active |
| STEGER | MANTENO | 9,700 | Active |
| STELLE COMMUNITY ASSN | CABERY | 100 | Active |
| STEPHENSON MOBILE ESTATES | FREEPORT | 128 | Active |
| STERLING ESTATES MHP | FARMINGTON HILLS | 1,954 | Active |
| STEVE BERRY | STEVE BERRY | 25 | Inactive |
| STEVER DISTRICT IMPROVEMENT ASSOCIATION | WEST PEORIA | 170 | Inactive |
| STEWARD | STEWARD | 238 | Active |
| STEWARDSON | STEWARDSON | 747 | Active |
| STICKNEY | STICKNEY | 6,902 | Active |
| STILLMAN VALLEY | STILLMAN VALLEY | 1,200 | Active |
| STILLWATER PUMP ADDITION | STILLWATER PUMP ADDITION | 25 | Inactive |
| STOCKTON | STOCKTON | 1,728 | Active |
| STONE PARK | WEST CHICAGO | 4,576 | Active |
| STONEFORT | STONEFORT | 234 | Active |
| STONETOWN EDGEWOOD TERRACE, LLC | BLUE ISLAND | 248 | Active |
| STONETOWN OAKS MHP LLC | GLENDALE | 280 | Active |
| STONINGTON | STONINGTON | 932 | Active |
| STOREY MANOR | UNSPEC PL IN CO | 25 | Inactive |
| STORYBOOK HIGHLANDS | BRISTOL | 100 | Active |
| STOY | STOY | 25 | Inactive |
| STRASBURG | STRASBURG | 603 | Inactive |
| STRATFORD WEST ASSOCIATION, INC. | MACOMB | 44 | Active |
| STRAWBERRY 1 | MUNDELEIN | 0 | Inactive |
| STRAWN | STRAWN | 133 | Active |
| STREAMWOOD | STREAMWOOD | 39,577 | Active |
| STRONGHURST | STRONGHURST | 950 | Active |
| STURM SBDV | LAKE ZURICH | 54 | Inactive |
| SUBLETTE | SUBLETTE | 426 | Active |
| SUBURBAN APARTMENTS (DE KALB UNIV DVL) | OAK BROOK | 1,050 | Active |
| SUBURBAN HEIGHTS SUBDIVISION | MILAN | 75 | Active |
| SUGAR CREEK MANUFACTURED HOME COMM., LLC | MILFORD | 115 | Active |
| SUGAR CREEK WTR DSTRCT | UNSPEC PL IN CO | 25 | Inactive |
| SUGAR CRK PWD | SPRINGFIELD | 754 | Active |
| SUGAR GROVE | SUGAR GROVE | 11,243 | Active |
| SUGAR GROVE - DUGAN WOODS | SUGAR GROVE TWP | 293 | Inactive |
| SUGAR GROVE - PRESTBURY | SUGAR GROVE TWP | 1,700 | Inactive |
| SULLIVAN | SULLIVAN | 4,729 | Active |
| SUMMERFIELD | SUMMERFIELD | 347 | Active |
| SUMMERLAND APTS | SUMMERLAND APTS | 25 | Inactive |
| SUMMIT | SUMMIT | 10,875 | Active |
| SUMMIT HOMEOWNERS ASSOCIATION | LAKE ZURICH | 19 | Inactive |
| SUMNER | NEWTON | 921 | Active |
| SUNNY ACRES MHP | CHICAGO | 750 | Active |
| SUNNY ACRES NURSING HOME | SUNNY ACRES NURSING HOME | 25 | Inactive |
| SUNNY HILL ESTATES SUBDIVISION | ORION | 375 | Active |
| SUNNYLAND SUBDIVISION | JOLIET | 300 | Active |
| SUNNYSIDE | SUNNYSIDE | 306 | Inactive |
| SUNNYSIDE WTR CO. | SUNNYSIDE WTR CO. | 347 | Inactive |
| SUNRISE SENIOR LIVING | PROSPECT HEIGHTS | 100 | Active |
| SUNSET LAKE | SUNSET LAKE | 25 | Inactive |
| SUNSET MHP | NORTHBROOK | 1,400 | Active |
| SUNSET TRAILS APTS | NEW LENOX | 25 | Inactive |
| SUNSET VIEW HOMEOWNERS ASSN | SUNSET VIEW HOMEOWNERS ASSN | 25 | Inactive |
| SUNSET VIEW MHP A | SUNSET VIEW MHP A | 25 | Inactive |
| SUNSET VIEW MHP B | SUNSET VIEW MHP B | 25 | Inactive |
| SUTPHEN DR SBDV | EARL TWP | 25 | Inactive |
| SWANSEA | SWANSEA | 5,432 | Inactive |
| SWEDONA WATER ASSOCIATION | SHERRARD | 109 | Active |
| SYCAMORE | SYCAMORE | 18,500 | Active |
| SYLMAR WATER CORPORTION | PEKIN | 0 | Inactive |
| SYLVAN LAKE 1ST SUBDIVISION | MUNDELEIN | 210 | Active |
| T AND C MOBILE ESTATES MHP | QUINCY | 225 | Inactive |
| T-L RURAL WATER DISTRICT | GLASFORD | 2,243 | Active |
| TABLE GROVE | TABLE GROVE | 353 | Active |
| TALLULA | TALLULA | 868 | Active |
| TAMAROA | DUQUOIN | 2,197 | Active |
| TAMMS | TAMMS | 653 | Active |
| TAMPICO | TAMPICO | 689 | Active |
| TANGLEWOOD SUBD | TANGLEWOOD SUBD | 25 | Inactive |
| TANNERON BAY HOMEOWNERS ASSOCIATION | VERNON HILLS | 256 | Active |
| TAYLOR SPRINGS | TAYLOR SPRINGS | 724 | Active |
| TAYLORVILLE | TAYLORVILLE | 12,806 | Active |
| TAYLORVILLE CORRECTIONAL CENTER | TAYLORVILLE | 1,300 | Active |
| TAZEWELL COUNTY PRAIRIE VIEW | TAZEWELL COUNTY PRAIRIE VIEW | 33 | Inactive |
| TAZEWELL COUNTY ROCK-ADAIR S | TAZEWELL COUNTY ROCK-ADAIR S | 240 | Inactive |
| TAZEWELL COUNTY VALLEY VIEW | TAZEWELL COUNTY | 140 | Inactive |
| TEE AND GREEN SUBDIVISION | WHEATON | 0 | Inactive |
| TEMPEL FARMS | NEWPORT TWP | 25 | Inactive |
| TEN MILE VIEW SUBDIVISION | EAST PEORIA | 21 | Inactive |
| TENNANTS SHADY OAKS SUBDIVISION | MILAN | 44 | Active |
| TENNESSEE | TENNESSEE | 55 | Inactive |
| TERRA COTTA REALTY | NUNDA TWP | 42 | Inactive |
| TERRACE OAK APARTMENTS | GURNEE | 58 | Inactive |
| TEUTOPOLIS | TEUTOPOLIS | 1,599 | Active |
| THAWVILLE | THAWVILLE | 270 | Active |
| THAYER | THAYER | 721 | Active |
| THE ADMIRAL AT THE LAKE | — | 25 | Inactive |
| THE BOARDWALK | BLOOMINGTON TWP | 25 | Inactive |
| THE GROVE MHP | PRINCETON | 0 | Inactive |
| THE LANDINGS ESTATES MHP | NORMAL TWP | 250 | Inactive |
| THE MEADOWS | DENVER | 238 | Active |
| THE MILL | OWEN TWP | 90 | Inactive |
| THE ORCHARDS MHC | CARTERVILLE | 253 | Active |
| THE PRESERVE AT LONG GROVE | ELGIN | 204 | Active |
| THEBES | THEBES | 213 | Active |
| THEODORE BEEVER | THEODORE BEEVER | 25 | Inactive |
| THOMASBORO | THOMASBORO | 1,066 | Active |
| THOMPSONVILLE | THOMPSONVILLE | 486 | Active |
| THOMSON | PERU | 580 | Active |
| THOMSON MAXIMUM SECURITY CENTER | THOMSON | 2,166 | Active |
| THOMSON MHP | THOMSON | 63 | Inactive |
| THORNTON | THORNTON | 2,333 | Active |
| THORNWOOD HMOWNRS ASSN | ELGIN TWP | 2,045 | Inactive |
| THREE COUNTY PWD | NEW DOUGLAS | 3,575 | Active |
| THUNDERBIRD WTR WELL ASSN | OAKWOOD TWP | 51 | Inactive |
| TILDEN | TILDEN | 740 | Active |
| TIMBER BROOK ESTATES | GENESEO | 120 | Active |
| TIMBER CREEK MHP/FORMERLY TIMBERLANE MHP | ROCKFORD | 45 | Inactive |
| TIMBER RIDGE | TIMBER RIDGE | 25 | Inactive |
| TIMBER RIDGE MHP | TIMBER RIDGE MHP | 25 | Inactive |
| TIMBER RIDGE MOBILE ESTATES | FREEPORT | 150 | Active |
| TIMBER RIDGE SBDV | COAL VALLEY | 90 | Active |
| TIMBER RIDGE SUBDIVISION | TIMBER RIDGE SUBDIVISION | 25 | Inactive |
| TIMBERLAKE SUBDIVISION | TIMBERLAKE SUBDIVISION | 25 | Inactive |
| TIMBERLAKES HOMEOWNERS ASSOCIATION | WATERLOO | 99 | Inactive |
| TIMBERLAN SUBDIVISION | METAMORA | 93 | Active |
| TIMBERLINE MHP | NEWTON | 120 | Active |
| TINDALLS 4TH & 5TH ADDN | BOWLING TWP | 32 | Inactive |
| TINDALLS ADDITION | TINDALLS ADDITION | 25 | Inactive |
| TINDALLS ADDN WTR SYS | BOWLING TWP | 25 | Inactive |
| TINDALS 3 & 6 ADDN | BOWLING TWP | 25 | Inactive |
| TINLEY PARK | TINLEY PARK | 56,703 | Active |
| TINLEY PARK MHC | TINLEY PARK | 300 | Inactive |
| TISKILWA | TISKILWA | 740 | Active |
| TOFT ACRES | RURAL TWP | 25 | Inactive |
| TOLEDO | TOLEDO | 1,278 | Active |
| TOLUCA | TOLUCA | 1,348 | Active |
| TONICA | TONICA | 705 | Active |
| TOULON | TOULON | 1,193 | Active |
| TOVEY | TOVEY | 512 | Active |
| TOWANDA | TOWANDA | 480 | Active |
| TOWER HILL | TOWER HILL | 500 | Active |
| TOWER LAKES | VOLO | 1,372 | Active |
| TOWER LAKES-COUNTRY CLUB | TOWER LAKES | 1,200 | Inactive |
| TOWER RIDGE SUBDIVISION | MILAN | 77 | Active |
| TOWN & COUNTRY MHP | TOWN & COUNTRY MHP | 25 | Inactive |
| TOWNERS SUBDIVISION | MUNDELEIN | 206 | Active |
| TOWNSEND MHP & MOTEL | TOWNSEND MHP & MOTEL | 25 | Inactive |
| TRAILER PARK | TRAILER PARK | 25 | Inactive |
| TREASURE ISLAND MHP | CHANNAHON | 240 | Inactive |
| TREMONT | TREMONT | 2,114 | Active |
| TRENTON | TRENTON | 2,742 | Active |
| TRI-STATE VILLAGE | HINSDALE | 636 | Inactive |
| TRIANGLE MANUFACTURED HOME COMMUNITY | ARLINGTON HEIGHTS | 124 | Active |
| TRIANGLE MHP | HERSEY | 90 | Inactive |
| TRIANGLE MHP | TRIANGLE MHP | 25 | Inactive |
| TRIANGLE MHP | TRIANGLE MHP | 25 | Inactive |
| TRIMBLE WATER COMPANY | ROBINSON | 539 | Inactive |
| TRITOWNSHIP WATER DISTRICT | TRENTON | 3,470 | Active |
| TRIVOLI PWD | TRIVOLI | 320 | Inactive |
| TROUT VALLEY ASSOCIATION | CARY | 18 | Inactive |
| TROY | TROY | 16,962 | Active |
| TUCKAWAY PEORIA LLC | GERMANTOWN HILLS | 98 | Active |
| TULLOCK WOODS WELL 1 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 10 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 11 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 12 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 13 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 14 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 15 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 16 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 17 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 18 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 19 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 2 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 3 | OWEN TWP | 27 | Inactive |
| TULLOCK WOODS WELL 4 | OWEN TWP | 27 | Inactive |
| TULLOCK WOODS WELL 5 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 6 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 7 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 8 | OWEN TWP | 25 | Inactive |
| TULLOCK WOODS WELL 9 | OWEN TWP | 25 | Inactive |
| TURKEY HOLLOW WELL CORP | BLACKHAWK TWP | 25 | Inactive |
| TUSCOLA | TUSCOLA | 4,875 | Active |
| U OF I-CHAMPAIGN | CHAMPAIGN | 13,000 | Active |
| UAW SENIOR CITIZENS CENTER | PEKIN | 240 | Active |
| ULLIN | ULLIN | 496 | Active |
| UNION | UNION | 594 | Active |
| UNION PACIFIC RAILROAD | DOLTON | 1,500 | Inactive |
| UNION-YORK WATER DISTRICT | WEST UNION | 600 | Active |
| UNITED REGIONAL WATER COOP | DIETERICH | 25 | Active |
| UNITY WATER CORPORATION | SHERRARD | 93 | Active |
| UNIVERSITY FLATS MHP | WASHINGTON | 203 | Active |
| UNIVERSITY ST MARY OF THE LAKE | MUNDELEIN | 365 | Inactive |
| URSA | URSA | 626 | Active |
| US ARMY FT SHERIDAN | HIGHWOOD | 3,500 | Inactive |
| UTL INC-COUNTY LINE WATER COMPANY | MCHENRY | 366 | Inactive |
| VALENTINE COMMUNITY WELL | VALENTINE COMMUNITY WELL | 25 | Inactive |
| VALIER | VALIER | 1,182 | Active |
| VALLEY HI NURSING | VALLEY HI NURSING | 25 | Inactive |
| VALLEY HI NURSING HOME | VOLO | 125 | Active |
| VALLEY RUN MHP | DANVILLE TWP | 25 | Inactive |
| VALLEY VIEW | VALLEY VIEW | 25 | Inactive |
| VALLEY VIEW ESTATES | FARMINGTON HILLS | 580 | Active |
| VALLEY VIEW MANOR | RANTOUL | 120 | Active |
| VALLEY VIEW MHP | AMITY TWP | 25 | Inactive |
| VALLEY VIEW MUTUAL WTR CMPNY | FONDULAC TWP | 66 | Inactive |
| VALLEY VIEW SUBDIVISION (DEKALB) | KINGSTON | 120 | Active |
| VALLEY VIEW SUBDIVISION (WOODFORD) | EAST PEORIA | 100 | Active |
| VALMEYER | VALMEYER | 1,263 | Active |
| VAN ORIN WATER COMPANY | VAN ORIN | 100 | Active |
| VANDALIA | VANDALIA | 7,616 | Active |
| VANDALIA CORRECTIONAL CENTER | VANDALIA | 700 | Active |
| VANDERHEYDEN SBDV | COAL VALLEY TWP | 25 | Inactive |
| VARNA | PERU | 342 | Active |
| VENADO LAKES-ARGYLL WATER ASSOCIATION | DELAVAN | 215 | Active |
| VERGENNES | VERGENNES | 648 | Active |
| VERMILION | VERMILION | 250 | Active |
| VERMILION CO GUNFLINT SUBD | — | 70 | Inactive |
| VERMILION COUNTY BOB WHITE MH | VERMILION COUNTY BOB WHITE MH | 27 | Inactive |
| VERMILION COUNTY CRAMERS MHP | VERMILION COUNTY CRAMERS MHP | 36 | Inactive |
| VERMILION GROVE WATERWORKS | RIDGE FARM | 160 | Active |
| VERMILION HLS ESTS | DANVILLE TWP | 200 | Inactive |
| VERMILION MNR | CATLIN TWP | 245 | Inactive |
| VERMONT | VERMONT | 738 | Active |
| VERNIE WEST | VERNIE WEST | 25 | Inactive |
| VERNON | VERNON | 129 | Inactive |
| VERNON HILLS - LAKE CO PW | LIBERTYVILLE | 33,207 | Active |
| VERSAILLES | VERSAILLES | 478 | Active |
| VET'S PLACE SBDV | CHILLICOTHE TWP | 85 | Inactive |
| VICTORIA | VICTORIA | 268 | Active |
| VIENNA | VIENNA | 1,618 | Active |
| VIENNA CORRECTIONAL CENTER | VIENNA | 501 | Active |
| VILLA PARK | VILLA PARK | 22,263 | Active |
| VILLAGE GREEN MOBILE HOME PARK | CROFTON | 220 | Active |
| VILLAGE MHCT | MECHANICSBG TWP | 69 | Inactive |
| VILLAGE OF LEE | VILLAGE OF LEE | 25 | Inactive |
| VILLAGE PARK MHP | VILLAGE PARK MHP | 25 | Inactive |
| VIOLA | VIOLA | 970 | Active |
| VIRDEN | VIRDEN | 3,274 | Active |
| VIRGINIA | VIRGINIA | 1,514 | Active |
| VISTA HGTS | VISTA HGTS | 25 | Inactive |
| VOLO | VOLO | 6,629 | Active |
| W G MURRAY DEVELOPMENT CENTER | CENTRALIA | 290 | Active |
| W R HILSENHOFF WATER SYSTEM | W R HILSENHOFF WATER SYSTEM | 25 | Inactive |
| WADSWORTH OAKS SUBDIVISION | WADSWORTH | 185 | Active |
| WADSWORTH VALLEY VIEW | WADSWORTH VALLEY VIEW | 25 | Inactive |
| WAGGONER | WAGGONER | 186 | Active |
| WALL'S MHP | YORK TWP | 25 | Inactive |
| WALNUT | WALNUT | 1,311 | Active |
| WALNUT GROVE MHC | MARION | 40 | Active |
| WALNUT HILL | CENTRALIA | 1,180 | Active |
| WALNUT HILL WELL ASSN | BLOUNT TWP | 25 | Inactive |
| WALTER WELLMAN | WALTER WELLMAN | 25 | Inactive |
| WALTONVILLE | MT. VERNON | 1,901 | Active |
| WAMAC | CENTRALIA | 1,030 | Active |
| WAPELLA | WAPELLA | 513 | Active |
| WARREN | WARREN | 1,323 | Active |
| WARRENSBURG | WARRENSBURG | 1,230 | Active |
| WARRENVILLE | WARRENVILLE | 12,350 | Active |
| WARRENVILLE ALBRIGHT ST | WARRENVILLE | 60 | Inactive |
| WARRENVILLE IL MUN WTR | WARRENVILLE IL MUN WTR | 1,650 | Inactive |
| WARRENVILLE RAY STR | WARRENVILLE | 93 | Inactive |
| WARRENVILLE WELL 6 | WARRENVILLE | 240 | Inactive |
| WARSAW | WARSAW | 1,480 | Active |
| WASCO SD | WASCO | 4,000 | Active |
| WASHBURN | WASHBURN | 1,032 | Active |
| WASHBURN MHP | SHARON TWP | 25 | Inactive |
| WASHINGTON | WASHINGTON | 14,793 | Active |
| WASHINGTON COUNTY WATER COMPANY | NASHVILLE | 11,374 | Active |
| WASHINGTON HGTS | WASHINGTON HGTS | 25 | Inactive |
| WATAGA | WATAGA | 965 | Active |
| WATCH E KEE MANUFACTURED HOME COMMUNITY | MILFORD | 138 | Active |
| WATER WERKS | COAL VALLEY | 43 | Active |
| WATERGATE SUBDIVISION | DIETERICH | 101 | Inactive |
| WATERLOO | WATERLOO | 10,190 | Active |
| WATERMAN | WATERMAN | 1,497 | Active |
| WATSEKA | WATSEKA | 5,500 | Active |
| WAUCONDA | WAUCONDA | 14,084 | Active |
| WAUKEGAN | WAUKEGAN | 87,149 | Active |
| WAVERLY | WAVERLY | 1,194 | Active |
| WAYNE CITY | WAYNE CITY | 1,239 | Active |
| WAYNESVILLE | WAYNESVILLE | 381 | Active |
| WAYSIDE MHP | RIVERSIDE TWP | 58 | Inactive |
| WEATHERSTONE LAKES MHP | PHOENIX | 221 | Active |
| WEE-MA-TUK WATER DISTRICT | CUBA | 863 | Active |
| WELDON | WELDON | 404 | Active |
| WELLINGTON | MILFORD | 222 | Active |
| WELTON DRIVE COMMUNITY WELL | WELTON DRIVE COMMUNITY WELL | 25 | Inactive |
| WENONA | WENONA | 974 | Active |
| WERNER GOER'S SUBDIVISION | WERNER GOER'S SUBDIVISION | 25 | Inactive |
| WERNER GOERS SBDV | MOUNDS TWP | 25 | Inactive |
| WEST BROOKLYN | WEST BROOKLYN | 131 | Active |
| WEST CHICAGO | WEST CHICAGO | 25,166 | Active |
| WEST CITY | WEST CITY | 664 | Active |
| WEST DUNDEE | WEST DUNDEE | 7,845 | Active |
| WEST FRANKFORT | WEST FRANKFORT | 8,650 | Active |
| WEST LIBERTY-DUNDAS WATER DISTRICT | DUNDAS | 484 | Active |
| WEST MORGAN WATER CORPORATION | WINCHESTER | 53 | Active |
| WEST POINT | WEST POINT | 248 | Active |
| WEST PRAIRIE WATER CO-OP | MACOMB | 2,395 | Active |
| WEST PRAIRIE WATER COMPANY | ARTHUR | 4,800 | Active |
| WEST SALEM | WEST SALEM | 819 | Active |
| WEST SHORE PARK SUBDIVISION | MUNDELEIN | 590 | Active |
| WEST SHORELAND SUBDIVISION | MUNDELEIN | 189 | Active |
| WEST SIDE MHP | WEST SIDE MHP | 25 | Inactive |
| WEST SIDE MHP | CLINTON | 100 | Active |
| WEST TOWN MHP | WEST TOWN MHP | 25 | Inactive |
| WESTCHESTER | WESTCHESTER | 16,241 | Active |
| WESTERN IL CORRECTIONAL CENTER | MT. STERLING | 1,600 | Active |
| WESTERN ILLINOIS UNIVERSITY | MACOMB | 8,000 | Active |
| WESTERN OAKS SBDV | UNSPEC PL IN CO | 25 | Inactive |
| WESTERN SPRINGS | WESTERN SPRINGS | 13,274 | Active |
| WESTERN WAYNE WATER DISTRICT | WAYNE CITY | 3,516 | Active |
| WESTFIELD | WESTFIELD | 678 | Active |
| WESTMONT | WESTMONT | 24,161 | Active |
| WESTPORT VILLAGE APARTMENT LP | LIBERTYVILLE | 200 | Inactive |
| WESTPORT WATER MUTUAL | OTTAWA | 61 | Inactive |
| WESTVIEW MANOR MHP | SCOTT TWP | 25 | Inactive |
| WESTVILLE | WESTVILLE | 3,917 | Active |
| WESTWIND ESTATES | PONTIAC | 120 | Active |
| WESTWOOD | SPRINGFIELD | 44 | Active |
| WESTWOOD PLACE | SPRINGFIELD | 152 | Active |
| WHEATON | WHEATON | 53,970 | Active |
| WHEELING | WHEELING | 39,725 | Active |
| WHISPERING HILLS MHP | MOLINE | 100 | Active |
| WHISPERING LAKES WATER SYSTEM, INC. | NORTHBROOK | 375 | Active |
| WHISPERING PINES MHP-LOAMI | LOAMI | 0 | Inactive |
| WHITE CITY | MT. OLIVE | 433 | Active |
| WHITE HALL | WHITE HALL | 2,313 | Active |
| WHITE HEATH WATERWORKS | WHITE HEATH | 685 | Active |
| WHITE OAKS ESTATES WATER ASSOC., INC. | DIXON | 410 | Active |
| WHITE SQUIRREL TRAILER PARK | WHITE SQUIRREL TRAILER PARK | 25 | Inactive |
| WHITES ADDN WELL 1 | HAMPTON TWP | 25 | Inactive |
| WHITES CMNTY WELL 2 | HAMPTON TWP | 32 | Inactive |
| WIENEN ESTATES | GALENA | 95 | Active |
| WILDWOOD ESTATES | OREM | 1,001 | Active |
| WILDWOOD SUBDIVISION - LAKE CO PW | LIBERTYVILLE | 14,832 | Active |
| WILL COUNTY C AND G | WILL COUNTY C AND G | 40 | Inactive |
| WILLARD COTHRAN APTS | WILLARD COTHRAN APTS | 25 | Inactive |
| WILLIAM BLAYLOCK | WILLIAM BLAYLOCK | 25 | Inactive |
| WILLIAM HESTER | WILLIAM HESTER | 25 | Inactive |
| WILLIAMSFIELD | WILLIAMSFIELD | 575 | Active |
| WILLIAMSON | STAUNTON | 340 | Inactive |
| WILLIAMSVILLE | WILLIAMSVILLE | 6,198 | Active |
| WILLIAMSVILLE-SHERMAN WTR CMSN | UNSPEC PL IN CO | 3,890 | Inactive |
| WILLISVILLE | WILLISVILLE | 799 | Active |
| WILLOW CREEK NORTH MHP | BLOOMINGTON | 250 | Active |
| WILLOW HAVEN MHP | NEW YORK | 270 | Active |
| WILLOW HILL | WILLOW HILL | 309 | Active |
| WILLOW LAKE ESTATES MHP | ELGIN | 920 | Active |
| WILLOW WAY TERRACE | WILLOW WAY TERRACE | 25 | Inactive |
| WILLOWAY TERRACE MHP | CHICAGO | 900 | Active |
| WILLOWBROOK | WILLOWBROOK | 9,000 | Active |
| WILMETTE | WILMETTE | 27,087 | Active |
| WILMINGTON | WILMINGTON | 5,700 | Active |
| WILSON ADDITION | WILSON ADDITION | 25 | Inactive |
| WILSONVILLE | WILSONVILLE | 536 | Active |
| WINCHESTER | WINCHESTER | 1,589 | Active |
| WINDCREST SUBDIVISION | COAL VALLEY | 49 | Active |
| WINDGATE COUNTY ESTATES | WINDGATE COUNTY ESTATES | 25 | Inactive |
| WINDGATE HOME | WINDGATE HOME | 25 | Inactive |
| WINDING CREEK ESTATES | TAYLOR RIDGE | 120 | Active |
| WINDMILL ESTATES | MOMENCE | 65 | Active |
| WINDSOR | WINDSOR | 1,200 | Active |
| WINDWOOD WATER SYSTEM, INC. | GALESBURG | 185 | Active |
| WINFIELD | WINFIELD | 9,835 | Active |
| WINNEBAGO | WINNEBAGO | 3,000 | Active |
| WINNEBAGO CO CHECKA MHP | — | 28 | Inactive |
| WINNEBAGO CO CHERRYVALE DEVEL | — | 25 | Inactive |
| WINNEBAGO CO LEANNA LAKESIDE 6 | — | 32 | Inactive |
| WINNEBAGO CO LEANNA LAKESIDE 7 | — | 32 | Inactive |
| WINNEBAGO COUNTY LEANNA LAKES | WINNEBAGO COUNTY LEANNA LAKES | 28 | Inactive |
| WINNEBAGO COUNTY SOUTH BLUFF | WINNEBAGO COUNTY SOUTH BLUFF | 380 | Inactive |
| WINNETKA | WINNETKA | 12,475 | Active |
| WINSLOW | FREEPORT | 350 | Active |
| WINTHROP HARBOR | WINTHROP HARBOR | 6,565 | Active |
| WM W FOX DEVELOPMENT CENTER | DWIGHT | 174 | Active |
| WME WATER COMMISSION | UNION TWP | 150 | Inactive |
| WOLF RIDGE WELL CORPORATION | COLONA | 95 | Active |
| WONDER LAKE | WONDER LAKE | 3,870 | Active |
| WONDER LAKE (NIU) | WONDER LAKE | 1,950 | Active |
| WOOD DALE | WOOD DALE | 14,012 | Active |
| WOOD DALE ESTATES | MELROSE PARK | 145 | Active |
| WOOD LAND MHP | WOOD LAND MHP | 25 | Inactive |
| WOOD PARK WATER CORP | ANDALUSIA TWP | 25 | Inactive |
| WOOD RIVER | WOOD RIVER | 10,464 | Active |
| WOODCREEK MHP | JOLIET | 85 | Inactive |
| WOODFORD CO WOODFORD HETS SUBD | METAMORA | 27 | Inactive |
| WOODFORD COUNTY RIVERVIEW H | WOODFORD COUNTY RIVERVIEW H | 25 | Inactive |
| WOODHAVEN | SUBLETTE | 4,100 | Active |
| WOODHULL | WOODHULL | 771 | Active |
| WOODLAND | WOODLAND | 319 | Active |
| WOODLAND A AND B MHP | DIXON | 490 | Active |
| WOODLAND ACRES MHC | BLUE ISLAND | 230 | Active |
| WOODLAND ACRES MHP | ERLANGER | 464 | Active |
| WOODLAND ESTATES WATER SYSTEM | WOODLAND ESTATES WATER SYSTEM | 25 | Inactive |
| WOODLAND ESTATES WATER SYSTEM | WOODLAND ESTATES WATER SYSTEM | 25 | Inactive |
| WOODLAND HEIGHTS ESTATES SUBDIVISION | EDELSTEIN | 0 | Inactive |
| WOODLAND MHP | ROCKFORD TWP | 200 | Inactive |
| WOODLAND VALLEY | HANOVER TWP | 4 | Inactive |
| WOODLAWN | WOODLAWN | 3,587 | Active |
| WOODRIDGE | WOODRIDGE | 33,566 | Active |
| WOODRIDGE ESTATES 1 EAST | FREEPORT | 0 | Inactive |
| WOODRIDGE ESTATES 1 WEST | FREEPORT | 0 | Inactive |
| WOODRIDGE ESTATES 2 | FREEPORT | 1 | Inactive |
| WOODRIDGE-FARMINGDALE | DOWNERS GR TWP | 2,865 | Inactive |
| WOODS CREEK WATER SUPPLY | WONDER LAKE | 1,000 | Inactive |
| WOODS MHP | GEORGETOWN TWP | 25 | Inactive |
| WOODSMOKE RANCH ASSN WELL 3 | MANLIUS TWP | 100 | Inactive |
| WOODSMOKE RANCH ASSOCIATION | SENECA | 23 | Inactive |
| WOODSTOCK | WOODSTOCK | 25,630 | Active |
| WOODWAY COURT SBDV | GROVELAND TWP | 47 | Inactive |
| WORDEN | WORDEN | 1,096 | Active |
| WORTH | WORTH | 10,970 | Active |
| WTR XIV | BLACKHAWK TWP | 32 | Inactive |
| WYANET | WYANET | 886 | Active |
| WYE PWD | MARION | 0 | Inactive |
| WYNSTONE WATER COMPANY | GENEVA | 1,424 | Active |
| WYOMING | WYOMING | 1,300 | Active |
| XENIA | XENIA | 542 | Active |
| YARBOROUGH TRAILER COURT | YARBOROUGH TRAILER COURT | 25 | Inactive |
| YATES CITY | YATES CITY | 828 | Active |
| YORK CENTER COOP | DARIEN | 212 | Inactive |
| YORK TOWNSHIP WATER SYSTEM | DARIEN | 1,423 | Active |
| YORKVILLE | YORKVILLE | 23,000 | Active |
| YOUNGS HILLCREST MHP | LUDLOW | 34 | Active |
| YOUNGS MHP | SCOTT TWP | 25 | Inactive |
| ZEIGLER | ZEIGLER | 1,774 | Active |
| ZELLER MHC | PEORIA TWP | 604 | Inactive |
| ZION | ZION | 24,442 | Active |