U.S. water systems
Oklahoma Water Systems
Oklahoma
1,959 community water systems on record — 889 active, 1,070 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 August 1, 2026. This is a record-keeping and public-information tool — it does not replace Oklahoma’s official records. Always confirm current status with Oklahoma before making decisions based on this information.
Counties in Oklahoma
Adair County (22)Alfalfa County (14)Atoka County (12)Beaver County (7)Beckham County (13)Blaine County (14)Bryan County (26)Caddo County (19)Canadian County (31)Carter County (20)Cherokee County (65)Choctaw County (12)Cimarron County (2)Cleveland County (37)Coal County (9)Comanche County (64)Cotton County (7)Craig County (15)Creek County (41)Custer County (18)Delaware County (70)Dewey County (9)Ellis County (5)Garfield County (36)Garvin County (24)Grady County (31)Grant County (11)Greer County (12)Harmon County (3)Harper County (3)Haskell County (9)Hughes County (13)Jackson County (15)Jefferson County (10)Johnston County (15)Kay County (32)Kingfisher County (12)Kiowa County (13)Latimer County (11)Le Flore County (30)Lincoln County (23)Logan County (34)Love County (5)Major County (6)Marshall County (25)Mayes County (63)McClain County (27)McCurtain County (28)McIntosh County (41)Murray County (15)Muskogee County (35)Noble County (14)Nowata County (12)Okfuskee County (9)Oklahoma County (148)Okmulgee County (28)Osage County (61)Ottawa County (27)Pawnee County (29)Payne County (50)Pittsburg County (34)Pontotoc County (28)Pottawatomie County (31)Pushmataha County (10)Roger Mills County (7)Rogers County (43)Seminole County (15)Sequoyah County (35)Stephens County (13)Texas County (18)Tillman County (10)Tulsa County (44)Wagoner County (39)Washington County (16)Washita County (15)Woods County (9)Woodward County (24)
All community water systems in Oklahoma
- OKLAHOMA CITYOKLAHOMA CITY · 644,000 servedActive
- TULSATULSA · 413,000 servedActive
- TULSA AB JEWELLTULSA · 403,000 servedInactive
- OKLAHOMA CITY DRAPEROKLAHOMA CITY · 276,000 servedInactive
- BROKEN ARROW MUNICIPAL AUTHORITYBROKEN ARROW · 116,330 servedActive
- NORMAN UTILITIES AUTHORITYNORMAN · 104,868 servedActive
- LAWTONLAWTON · 92,757 servedActive
- EDMOND PWAEDMOND · 79,408 servedActive
- MIDWEST CITYMIDWEST CITY · 55,935 servedActive
- MOORE PUBLIC WORKS AUTHORITYMOORE · 55,083 servedActive
- STILLWATER UTILITIES AUTHORITYSTILLWATER · 53,000 servedActive
- ENIDENID · 49,347 servedActive
- EDMOND PWAEDMOND · 47,000 servedInactive
- OKLAHOMA CITY OVERHOLSEROKLAHOMA CITY · 46,000 servedInactive
- MUSKOGEE MUNICIPAL AUTHORITYMUSKOGEE · 38,310 servedActive
- BARTLESVILLEBARTLESVILLE · 34,748 servedActive
- OKLAHOMA UNIVERSITYNORMAN · 34,000 servedActive
- SHAWNEE MUNICIPAL AUTHORITYSHAWNEE · 29,990 servedActive
- SAND SPRINGSSAND SPRINGS · 28,774 servedActive
- PONCA CITY MUN WATERPONCA CITY · 27,155 servedActive
- WAGONER CO. RWD #4BROKEN ARROW · 25,792 servedActive
- WASHINGTON CO RWD #3 (NEW,#1)COLLINSVILLE · 25,375 servedActive
- ARDMOREARDMORE · 24,893 servedActive
- TINKER AIR FORCE BASEOKLAHOMA CITY · 24,645 servedActive
- DUNCAN PUBLIC UTILITIES AUTHORITYDUNCAN · 23,000 servedActive
- FORT SILL HQUSAFACFSFORT STILL · 23,000 servedActive
- OWASSOOWASSO · 23,000 servedActive
- OKLAHOMA UNIVERSITYNORMAN · 22,738 servedInactive
- ADAADA · 22,600 servedActive
- YUKONYUKON · 22,498 servedActive
- DEL CITYDEL CITY · 22,128 servedActive
- BETHANYBETHANY · 20,307 servedActive
- STILLWATERSTILLWATER · 20,000 servedInactive
- SAPULPASAPULPA · 19,702 servedActive
- BIXBY PUBLIC WORKS AUTHORITY18,750 servedActive
- ALTUSALTUS · 18,717 servedActive
- MUSTANG, CITY OFMUSTANG · 18,576 servedActive
- MCALESTER PWAMCALESTER · 18,206 servedActive
- MARSHALL COUNTY RURAL WATER DISTRICT #217,587 servedActive
- JENKS PWAJENKS · 16,924 servedActive
- EL RENOEL RENO · 16,212 servedActive
- CHICKASHA MUNICIPAL AUTHORITYCHICKASHA · 16,036 servedActive
- CLAREMORECLAREMORE · 15,873 servedActive
- DURANT UTILITIES AUTHORITYDURANT · 15,545 servedActive
- WOODWARDWOODWARD · 15,000 servedActive
- TAHLEQUAH PWATAHLEQUAH · 14,458 servedActive
- MIAMIMIAMI · 13,704 servedActive
- OKMULGEE PWAOKMULGEE · 13,495 servedActive
- SEQUOYAH CO. RWD #8SALLISAW · 13,460 servedActive
- BIXBY PUBLIC WORKS AUTHORITYBIXBY · 13,336 servedInactive
- OSU WATER PLANT13,000 servedActive
- CREEK CO RWD # 2JENKS · 12,788 servedActive
- GLENPOOL WATERGLENPOOL · 12,500 servedActive
- ROGERS CO RWD # 5CLAREMORE · 11,782 servedActive
- GUYMONGUYMON · 11,442 servedActive
- SOUTHERN OKLA WATER CORPARDMORE · 11,250 servedActive
- ENID #2ENID · 11,062 servedInactive
- WEATHERFORDWEATHERFORD · 10,833 servedActive
- ROGERS CO RWD # 3 COT STACLAREMORE · 10,750 servedActive
- ELK CITYELK CITY · 10,510 servedActive
- WAGONER CO RWD #4BROKEN ARROW · 10,500 servedInactive
- ROGERS CO RWD # 3 LAKE PLANTCLAREMORE · 10,470 servedActive
- GUTHRIEGUTHRIE · 9,925 servedActive
- COWETA PWACOWETA · 9,450 servedActive
- LEFLORE CO. RWD #14SPIRO · 9,077 servedActive
- LOGAN CO RWD #1GUTHRIE · 8,907 servedActive
- CLINTONCLINTON · 8,883 servedActive
- PRYORPRYOR · 8,784 servedActive
- SALLISAWSALLISAW · 8,510 servedActive
- JEFFERSON CO CONS RWD #1HASTINGS · 8,398 servedActive
- CUSHINGCUSHING · 8,371 servedActive
- CUSHINGCUSHING · 8,371 servedInactive
- OKMULGEE CO. RWD #6 (HECTORVILLE)MOUNDS · 8,370 servedActive
- BRYAN COUNTY RURAL WATER DISTRICT #58,325 servedActive
- WASHINGTON RWD #3 (OLD)COLLINSVILLE · 8,200 servedInactive
- SKIATOOK PWASKIATOOK · 8,110 servedActive
- MUSTANGMUSTANG · 8,000 servedInactive
- WAGONERWAGONER · 7,982 servedActive
- POTEAU PWAPOTEAU · 7,939 servedActive
- NEWCASTLENEWCASTLE · 7,900 servedActive
- ROGERS CO RWD # 4OOLOGAH · 7,725 servedActive
- BLACKWELL MUNICIPAL AUTHORITYBLACKWELL · 7,668 servedActive
- PIEDMONT MUNICIPAL AUTHORITYPIEDMONT · 7,542 servedActive
- GROVE MUNICIPAL SERVICES AUTH.GROVE · 7,311 servedActive
- FALLS CREEK BAPTIST CONFERENCE CENTEROKLAHOMA CITY · 7,000 servedActive
- IDABEL PWAIDABEL · 6,952 servedActive
- SEMINOLESEMINOLE · 6,899 servedActive
- ANADARKO PUBLIC WORKS AUTHORITYANADARKO · 6,804 servedActive
- PURCELLPURCELL · 6,693 servedActive
- OSAGE CO RWD #15SKIATOOK · 6,647 servedActive
- VINITA UTILITIES AUTHORITYVINITA · 6,472 servedActive
- STEPHENS CO RWD #5MARLOW · 6,426 servedActive
- MARSHALL CO WATER CORPMADILL · 6,325 servedInactive
- MAYES CO RWD # 2CHOUTEAU · 6,280 servedActive
- BRYAN CO. RWS & SWMD #2MEAD · 6,270 servedActive
- PAULS VALLEYPAULS VALLEY · 6,256 servedActive
- TECUMSEH UTILITY AUTHORITYTECUMSEH · 6,098 servedActive
- HENRYETTA MUNICIPAL AUTHORITYHENRYETTA · 6,096 servedActive
- SAPULPA RURAL WATER COMPANYSAPULPA · 5,810 servedActive
- NOBLE UTILITIES AUTHORITYNOBLE · 5,750 servedActive
- MCCURTAIN CO. RWD #8 (MT. FORK WATER)BROKEN BOW · 5,685 servedActive
- CREEK CO RWD # 1KELLYVILLE · 5,675 servedActive
- HUGO MUNICIPAL AUTHORITYHUGO · 5,536 servedActive
- DEER CREEK RURAL WATER CORPEDMOND · 5,500 servedActive
- LONGTOWN RW&SD #1 (PITTSBURG CO.)EUFAULA · 5,444 servedActive
- COLLINSVILLECOLLINSVILLE · 5,400 servedActive
- JEFFERSON CONS WATER DIST #15,250 servedInactive
- PERRY WATER & LIGHT DEPTPERRY · 5,230 servedActive
- ALVAALVA · 5,208 servedActive
- TRI-COUNTY RWD #2EARLSBORO · 5,172 servedActive
- KINGFISHERKINGFISHER · 5,073 servedActive
- PAWNEE CO RWD #3PAWNEE · 5,000 servedInactive
- PORUM PWAPORUM · 5,000 servedActive
- SULPHURSULPHUR · 4,929 servedActive
- LONE GROVELONE GROVE · 4,863 servedActive
- PONTOTOC CO RWD # 7ADA · 4,863 servedActive
- PUSHMATAHA CO. RWD #3ANTLERS · 4,825 servedActive
- MURRAY CO RWD # 1SULPHUR · 4,800 servedActive
- HOLDENVILLEHOLDENVILLE · 4,732 servedActive
- FORT GIBSONFORT GIBSON · 4,700 servedActive
- LEFLORE CO. RWD #2POCOLA · 4,700 servedActive
- ALTUS AFBALTUS · 4,617 servedActive
- MARLOW MUNICIPAL AUTHORITYMARLOW · 4,600 servedActive
- TUTTLE4,500 servedActive
- WAGONER CO RWS&SWMD #9WAGONER · 4,500 servedInactive
- BRYAN COUNTY RW&SD #5CDURANT · 4,400 servedInactive
- SAYRESAYRE · 4,375 servedActive
- WAGONER CO. RWD #9WAGONER · 4,363 servedActive
- BROKEN BOW PWABROKEN BOW · 4,320 servedActive
- TUTTLETUTTLE · 4,284 servedInactive
- WAGONER CO. RWD #5COWETA · 4,251 servedActive
- CRAIG CO RWD #2VINITA · 4,250 servedActive
- PONTOTOC CO RWD # 8ADA · 4,250 servedActive
- ADAMSON RWD #8HARTSHORNE · 4,221 servedActive
- HARRAHHARRAH · 4,190 servedActive
- MAYES CO RWD #4PRYOR · 4,183 servedActive
- MUSKOGEE CO. RWD #5MUSKOGEE · 4,135 servedActive
- ROGERS CO RWD #3 RIVER PLANTCLAREMORE · 4,126 servedInactive
- KETCHUM PWAKETCHUM · 4,025 servedActive
- NICHOLS HILLSNICHOLS HILLS · 4,020 servedActive
- OKLA ORDNANCE WORKS AUTHORITYPRYOR · 4,000 servedActive
- NOWATA MUNICIPAL AUTHORITYNOWATA · 3,971 servedActive
- FREDERICKFREDERICK · 3,940 servedActive
- MANNFORDMANNFORD · 3,935 servedActive
- GRADY CO RWD #6AMBER · 3,930 servedActive
- CHOCTAW UA3,926 servedActive
- CADDO CO RWD #3CARNEGIE · 3,900 servedActive
- LEFLORE CO. RWD #18WISTER · 3,870 servedActive
- BRYAN CO RWD #2MEAD · 3,865 servedInactive
- MCCURTAIN CO. RWD #1HAWORTH · 3,842 servedActive
- BROKEN BOW PWABROKEN BOW · 3,800 servedInactive
- PAWHUSKAPAWHUSKA · 3,800 servedActive
- MAYES CO RWD # 6BIG CABIN · 3,750 servedActive
- HOBARTHOBART · 3,746 servedActive
- SPENCERSPENCER · 3,746 servedActive
- BRISTOW MUNICIPAL AUTHORITYBRISTOW · 3,700 servedActive
- OSU INSTITUTE OF TECHNOLOGYOKMULGEE · 3,606 servedInactive
- MCINTOSH CO. RWD #8 (TEXANNA)EUFAULA · 3,574 servedActive
- CONSOLIDATED RWD #3 CREEK COSAPULPA · 3,500 servedActive
- DEWEY PUBLIC WORKS AUTHORITYDEWEY · 3,490 servedActive
- CHECOTAH PWACHECOTAH · 3,481 servedActive
- WEWOKA PUBLIC WORKS AUTHORITYWEWOKA · 3,450 servedActive
- MADILLMADILL · 3,410 servedActive
- HEALDTONHEALDTON · 3,407 servedInactive
- MILLERTON RWD #2MILLERTON · 3,400 servedInactive
- CHEROKEE CO. RWD #11HULBERT · 3,395 servedActive
- ROGERS CO RWD # 8CLAREMORE · 3,375 servedActive
- MAYES CO RWD # 5ADAIR · 3,360 servedActive
- ELGIN PWAELGIN · 3,300 servedActive
- TONKAWATONKAWA · 3,299 servedActive
- STILWELLSTILWELL · 3,276 servedActive
- CLEVELAND MUNICIPAL AUTHORITYCLEVELAND · 3,262 servedActive
- STICKROSS MOUNTAIN WATER COTAHLEQUAH · 3,250 servedActive
- WAGONER CO RWD # 5COWETA · 3,233 servedInactive
- VANCE AFBENID · 3,231 servedActive
- PAWNEE CO RWD #1CLEVELAND · 3,200 servedActive
- CHANDLERCHANDLER · 3,142 servedActive
- OKEMAH UTILITIES AUTHORITYOKEMAH · 3,113 servedActive
- MULDROW PWAMULDROW · 3,104 servedActive
- ROGERS CO RWD # 7CLAREMORE · 3,040 servedActive
- WILBURTONWILBURTON · 3,025 servedActive
- ATOKA CO. RWS & SWMD #4ATOKA · 3,000 servedActive
- COMANCHE CO RWD #4CACHE · 3,000 servedActive
- COTTON CO RWD #2WALTERS · 3,000 servedActive
- HASKELL CO. WATER COMPANYSTIGLER · 3,000 servedActive
- HEAVENER UTILITY AUTH - PSGHEAVENER · 3,000 servedActive
- JOSEPH HARP CORR INSTLEXINGTON · 3,000 servedActive
- MURRAY CO RWD # 1 (SULPHUR)SULPHUR · 3,000 servedInactive
- PAYNE CO RW CORP #3STILLWATER · 3,000 servedActive
- SAR WATER CORPSKIATOOK · 3,000 servedInactive
- TISHOMINGO MUNICIPAL AUTHORITYTISHOMINGO · 3,000 servedActive
- ATOKAATOKA · 2,988 servedActive
- BLANCHARDBLANCHARD · 2,966 servedActive
- SEQUOYAH CO. RWD #7MULDROW · 2,948 servedActive
- MCLOUD2,939 servedActive
- MANGUM PWSMANGUM · 2,924 servedActive
- NEW CORDELL UTILITY AUTHORITYCORDELL · 2,903 servedActive
- DRUMRIGHTDRUMRIGHT · 2,876 servedActive
- LINDSAY PWALINDSAY · 2,850 servedActive
- ROLANDROLAND · 2,842 servedActive
| System name | Mailing city | Population served | Status |
|---|---|---|---|
| OKLAHOMA CITY | OKLAHOMA CITY | 644,000 | Active |
| TULSA | TULSA | 413,000 | Active |
| TULSA AB JEWELL | TULSA | 403,000 | Inactive |
| OKLAHOMA CITY DRAPER | OKLAHOMA CITY | 276,000 | Inactive |
| BROKEN ARROW MUNICIPAL AUTHORITY | BROKEN ARROW | 116,330 | Active |
| NORMAN UTILITIES AUTHORITY | NORMAN | 104,868 | Active |
| LAWTON | LAWTON | 92,757 | Active |
| EDMOND PWA | EDMOND | 79,408 | Active |
| MIDWEST CITY | MIDWEST CITY | 55,935 | Active |
| MOORE PUBLIC WORKS AUTHORITY | MOORE | 55,083 | Active |
| STILLWATER UTILITIES AUTHORITY | STILLWATER | 53,000 | Active |
| ENID | ENID | 49,347 | Active |
| EDMOND PWA | EDMOND | 47,000 | Inactive |
| OKLAHOMA CITY OVERHOLSER | OKLAHOMA CITY | 46,000 | Inactive |
| MUSKOGEE MUNICIPAL AUTHORITY | MUSKOGEE | 38,310 | Active |
| BARTLESVILLE | BARTLESVILLE | 34,748 | Active |
| OKLAHOMA UNIVERSITY | NORMAN | 34,000 | Active |
| SHAWNEE MUNICIPAL AUTHORITY | SHAWNEE | 29,990 | Active |
| SAND SPRINGS | SAND SPRINGS | 28,774 | Active |
| PONCA CITY MUN WATER | PONCA CITY | 27,155 | Active |
| WAGONER CO. RWD #4 | BROKEN ARROW | 25,792 | Active |
| WASHINGTON CO RWD #3 (NEW,#1) | COLLINSVILLE | 25,375 | Active |
| ARDMORE | ARDMORE | 24,893 | Active |
| TINKER AIR FORCE BASE | OKLAHOMA CITY | 24,645 | Active |
| DUNCAN PUBLIC UTILITIES AUTHORITY | DUNCAN | 23,000 | Active |
| FORT SILL HQUSAFACFS | FORT STILL | 23,000 | Active |
| OWASSO | OWASSO | 23,000 | Active |
| OKLAHOMA UNIVERSITY | NORMAN | 22,738 | Inactive |
| ADA | ADA | 22,600 | Active |
| YUKON | YUKON | 22,498 | Active |
| DEL CITY | DEL CITY | 22,128 | Active |
| BETHANY | BETHANY | 20,307 | Active |
| STILLWATER | STILLWATER | 20,000 | Inactive |
| SAPULPA | SAPULPA | 19,702 | Active |
| BIXBY PUBLIC WORKS AUTHORITY | — | 18,750 | Active |
| ALTUS | ALTUS | 18,717 | Active |
| MUSTANG, CITY OF | MUSTANG | 18,576 | Active |
| MCALESTER PWA | MCALESTER | 18,206 | Active |
| MARSHALL COUNTY RURAL WATER DISTRICT #2 | — | 17,587 | Active |
| JENKS PWA | JENKS | 16,924 | Active |
| EL RENO | EL RENO | 16,212 | Active |
| CHICKASHA MUNICIPAL AUTHORITY | CHICKASHA | 16,036 | Active |
| CLAREMORE | CLAREMORE | 15,873 | Active |
| DURANT UTILITIES AUTHORITY | DURANT | 15,545 | Active |
| WOODWARD | WOODWARD | 15,000 | Active |
| TAHLEQUAH PWA | TAHLEQUAH | 14,458 | Active |
| MIAMI | MIAMI | 13,704 | Active |
| OKMULGEE PWA | OKMULGEE | 13,495 | Active |
| SEQUOYAH CO. RWD #8 | SALLISAW | 13,460 | Active |
| BIXBY PUBLIC WORKS AUTHORITY | BIXBY | 13,336 | Inactive |
| OSU WATER PLANT | — | 13,000 | Active |
| CREEK CO RWD # 2 | JENKS | 12,788 | Active |
| GLENPOOL WATER | GLENPOOL | 12,500 | Active |
| ROGERS CO RWD # 5 | CLAREMORE | 11,782 | Active |
| GUYMON | GUYMON | 11,442 | Active |
| SOUTHERN OKLA WATER CORP | ARDMORE | 11,250 | Active |
| ENID #2 | ENID | 11,062 | Inactive |
| WEATHERFORD | WEATHERFORD | 10,833 | Active |
| ROGERS CO RWD # 3 COT STA | CLAREMORE | 10,750 | Active |
| ELK CITY | ELK CITY | 10,510 | Active |
| WAGONER CO RWD #4 | BROKEN ARROW | 10,500 | Inactive |
| ROGERS CO RWD # 3 LAKE PLANT | CLAREMORE | 10,470 | Active |
| GUTHRIE | GUTHRIE | 9,925 | Active |
| COWETA PWA | COWETA | 9,450 | Active |
| LEFLORE CO. RWD #14 | SPIRO | 9,077 | Active |
| LOGAN CO RWD #1 | GUTHRIE | 8,907 | Active |
| CLINTON | CLINTON | 8,883 | Active |
| PRYOR | PRYOR | 8,784 | Active |
| SALLISAW | SALLISAW | 8,510 | Active |
| JEFFERSON CO CONS RWD #1 | HASTINGS | 8,398 | Active |
| CUSHING | CUSHING | 8,371 | Active |
| CUSHING | CUSHING | 8,371 | Inactive |
| OKMULGEE CO. RWD #6 (HECTORVILLE) | MOUNDS | 8,370 | Active |
| BRYAN COUNTY RURAL WATER DISTRICT #5 | — | 8,325 | Active |
| WASHINGTON RWD #3 (OLD) | COLLINSVILLE | 8,200 | Inactive |
| SKIATOOK PWA | SKIATOOK | 8,110 | Active |
| MUSTANG | MUSTANG | 8,000 | Inactive |
| WAGONER | WAGONER | 7,982 | Active |
| POTEAU PWA | POTEAU | 7,939 | Active |
| NEWCASTLE | NEWCASTLE | 7,900 | Active |
| ROGERS CO RWD # 4 | OOLOGAH | 7,725 | Active |
| BLACKWELL MUNICIPAL AUTHORITY | BLACKWELL | 7,668 | Active |
| PIEDMONT MUNICIPAL AUTHORITY | PIEDMONT | 7,542 | Active |
| GROVE MUNICIPAL SERVICES AUTH. | GROVE | 7,311 | Active |
| FALLS CREEK BAPTIST CONFERENCE CENTER | OKLAHOMA CITY | 7,000 | Active |
| IDABEL PWA | IDABEL | 6,952 | Active |
| SEMINOLE | SEMINOLE | 6,899 | Active |
| ANADARKO PUBLIC WORKS AUTHORITY | ANADARKO | 6,804 | Active |
| PURCELL | PURCELL | 6,693 | Active |
| OSAGE CO RWD #15 | SKIATOOK | 6,647 | Active |
| VINITA UTILITIES AUTHORITY | VINITA | 6,472 | Active |
| STEPHENS CO RWD #5 | MARLOW | 6,426 | Active |
| MARSHALL CO WATER CORP | MADILL | 6,325 | Inactive |
| MAYES CO RWD # 2 | CHOUTEAU | 6,280 | Active |
| BRYAN CO. RWS & SWMD #2 | MEAD | 6,270 | Active |
| PAULS VALLEY | PAULS VALLEY | 6,256 | Active |
| TECUMSEH UTILITY AUTHORITY | TECUMSEH | 6,098 | Active |
| HENRYETTA MUNICIPAL AUTHORITY | HENRYETTA | 6,096 | Active |
| SAPULPA RURAL WATER COMPANY | SAPULPA | 5,810 | Active |
| NOBLE UTILITIES AUTHORITY | NOBLE | 5,750 | Active |
| MCCURTAIN CO. RWD #8 (MT. FORK WATER) | BROKEN BOW | 5,685 | Active |
| CREEK CO RWD # 1 | KELLYVILLE | 5,675 | Active |
| HUGO MUNICIPAL AUTHORITY | HUGO | 5,536 | Active |
| DEER CREEK RURAL WATER CORP | EDMOND | 5,500 | Active |
| LONGTOWN RW&SD #1 (PITTSBURG CO.) | EUFAULA | 5,444 | Active |
| COLLINSVILLE | COLLINSVILLE | 5,400 | Active |
| JEFFERSON CONS WATER DIST #1 | — | 5,250 | Inactive |
| PERRY WATER & LIGHT DEPT | PERRY | 5,230 | Active |
| ALVA | ALVA | 5,208 | Active |
| TRI-COUNTY RWD #2 | EARLSBORO | 5,172 | Active |
| KINGFISHER | KINGFISHER | 5,073 | Active |
| PAWNEE CO RWD #3 | PAWNEE | 5,000 | Inactive |
| PORUM PWA | PORUM | 5,000 | Active |
| SULPHUR | SULPHUR | 4,929 | Active |
| LONE GROVE | LONE GROVE | 4,863 | Active |
| PONTOTOC CO RWD # 7 | ADA | 4,863 | Active |
| PUSHMATAHA CO. RWD #3 | ANTLERS | 4,825 | Active |
| MURRAY CO RWD # 1 | SULPHUR | 4,800 | Active |
| HOLDENVILLE | HOLDENVILLE | 4,732 | Active |
| FORT GIBSON | FORT GIBSON | 4,700 | Active |
| LEFLORE CO. RWD #2 | POCOLA | 4,700 | Active |
| ALTUS AFB | ALTUS | 4,617 | Active |
| MARLOW MUNICIPAL AUTHORITY | MARLOW | 4,600 | Active |
| TUTTLE | — | 4,500 | Active |
| WAGONER CO RWS&SWMD #9 | WAGONER | 4,500 | Inactive |
| BRYAN COUNTY RW&SD #5C | DURANT | 4,400 | Inactive |
| SAYRE | SAYRE | 4,375 | Active |
| WAGONER CO. RWD #9 | WAGONER | 4,363 | Active |
| BROKEN BOW PWA | BROKEN BOW | 4,320 | Active |
| TUTTLE | TUTTLE | 4,284 | Inactive |
| WAGONER CO. RWD #5 | COWETA | 4,251 | Active |
| CRAIG CO RWD #2 | VINITA | 4,250 | Active |
| PONTOTOC CO RWD # 8 | ADA | 4,250 | Active |
| ADAMSON RWD #8 | HARTSHORNE | 4,221 | Active |
| HARRAH | HARRAH | 4,190 | Active |
| MAYES CO RWD #4 | PRYOR | 4,183 | Active |
| MUSKOGEE CO. RWD #5 | MUSKOGEE | 4,135 | Active |
| ROGERS CO RWD #3 RIVER PLANT | CLAREMORE | 4,126 | Inactive |
| KETCHUM PWA | KETCHUM | 4,025 | Active |
| NICHOLS HILLS | NICHOLS HILLS | 4,020 | Active |
| OKLA ORDNANCE WORKS AUTHORITY | PRYOR | 4,000 | Active |
| NOWATA MUNICIPAL AUTHORITY | NOWATA | 3,971 | Active |
| FREDERICK | FREDERICK | 3,940 | Active |
| MANNFORD | MANNFORD | 3,935 | Active |
| GRADY CO RWD #6 | AMBER | 3,930 | Active |
| CHOCTAW UA | — | 3,926 | Active |
| CADDO CO RWD #3 | CARNEGIE | 3,900 | Active |
| LEFLORE CO. RWD #18 | WISTER | 3,870 | Active |
| BRYAN CO RWD #2 | MEAD | 3,865 | Inactive |
| MCCURTAIN CO. RWD #1 | HAWORTH | 3,842 | Active |
| BROKEN BOW PWA | BROKEN BOW | 3,800 | Inactive |
| PAWHUSKA | PAWHUSKA | 3,800 | Active |
| MAYES CO RWD # 6 | BIG CABIN | 3,750 | Active |
| HOBART | HOBART | 3,746 | Active |
| SPENCER | SPENCER | 3,746 | Active |
| BRISTOW MUNICIPAL AUTHORITY | BRISTOW | 3,700 | Active |
| OSU INSTITUTE OF TECHNOLOGY | OKMULGEE | 3,606 | Inactive |
| MCINTOSH CO. RWD #8 (TEXANNA) | EUFAULA | 3,574 | Active |
| CONSOLIDATED RWD #3 CREEK CO | SAPULPA | 3,500 | Active |
| DEWEY PUBLIC WORKS AUTHORITY | DEWEY | 3,490 | Active |
| CHECOTAH PWA | CHECOTAH | 3,481 | Active |
| WEWOKA PUBLIC WORKS AUTHORITY | WEWOKA | 3,450 | Active |
| MADILL | MADILL | 3,410 | Active |
| HEALDTON | HEALDTON | 3,407 | Inactive |
| MILLERTON RWD #2 | MILLERTON | 3,400 | Inactive |
| CHEROKEE CO. RWD #11 | HULBERT | 3,395 | Active |
| ROGERS CO RWD # 8 | CLAREMORE | 3,375 | Active |
| MAYES CO RWD # 5 | ADAIR | 3,360 | Active |
| ELGIN PWA | ELGIN | 3,300 | Active |
| TONKAWA | TONKAWA | 3,299 | Active |
| STILWELL | STILWELL | 3,276 | Active |
| CLEVELAND MUNICIPAL AUTHORITY | CLEVELAND | 3,262 | Active |
| STICKROSS MOUNTAIN WATER CO | TAHLEQUAH | 3,250 | Active |
| WAGONER CO RWD # 5 | COWETA | 3,233 | Inactive |
| VANCE AFB | ENID | 3,231 | Active |
| PAWNEE CO RWD #1 | CLEVELAND | 3,200 | Active |
| CHANDLER | CHANDLER | 3,142 | Active |
| OKEMAH UTILITIES AUTHORITY | OKEMAH | 3,113 | Active |
| MULDROW PWA | MULDROW | 3,104 | Active |
| ROGERS CO RWD # 7 | CLAREMORE | 3,040 | Active |
| WILBURTON | WILBURTON | 3,025 | Active |
| ATOKA CO. RWS & SWMD #4 | ATOKA | 3,000 | Active |
| COMANCHE CO RWD #4 | CACHE | 3,000 | Active |
| COTTON CO RWD #2 | WALTERS | 3,000 | Active |
| HASKELL CO. WATER COMPANY | STIGLER | 3,000 | Active |
| HEAVENER UTILITY AUTH - PSG | HEAVENER | 3,000 | Active |
| JOSEPH HARP CORR INST | LEXINGTON | 3,000 | Active |
| MURRAY CO RWD # 1 (SULPHUR) | SULPHUR | 3,000 | Inactive |
| PAYNE CO RW CORP #3 | STILLWATER | 3,000 | Active |
| SAR WATER CORP | SKIATOOK | 3,000 | Inactive |
| TISHOMINGO MUNICIPAL AUTHORITY | TISHOMINGO | 3,000 | Active |
| ATOKA | ATOKA | 2,988 | Active |
| BLANCHARD | BLANCHARD | 2,966 | Active |
| SEQUOYAH CO. RWD #7 | MULDROW | 2,948 | Active |
| MCLOUD | — | 2,939 | Active |
| MANGUM PWS | MANGUM | 2,924 | Active |
| NEW CORDELL UTILITY AUTHORITY | CORDELL | 2,903 | Active |
| DRUMRIGHT | DRUMRIGHT | 2,876 | Active |
| LINDSAY PWA | LINDSAY | 2,850 | Active |
| ROLAND | ROLAND | 2,842 | Active |
Showing the 200 largest of 1,959 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.