DuPage County, Illinois Water Systems

DuPage County, Illinois

89 community water systems on record — 48 active, 41 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.

Community water systems in DuPage County, Illinois

System name	City	Population served	Status
ADDISON	ADDISON	38,017	Active
AQUA ILLINOIS-OAK BROOK	KANKAKEE	5,361	Active
BELMONT-HIGHWOOD PWD	DOWNERS GR TWP	498	Inactive
BENSENVILLE	BENSENVILLE	18,537	Active
BLOOMINGDALE	BLOOMINGDALE	22,018	Active
BURR RIDGE	BURR RIDGE	11,192	Active
CAROL STREAM	CAROL STREAM	39,854	Active
CARRIAGE WALK SBDV	UNSPEC PL IN CO	25	Inactive
CLARENDON HILLS	CLARENDON HILLS	8,702	Active
COUNTRYSIDE WELL 2	DOWNERS GR TWP	30	Inactive
CTZNS PLEASANT HILL DVN	MILTON TWP	177	Inactive
DARIEN	DARIEN	21,751	Active
DERBY GLEN HMOWNR ASSN	MILTON TWP	25	Inactive
DOWNERS GROVE	DOWNERS GROVE	49,425	Active
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
DUPAGE CNTY CARE UNIT	UNSPEC PL IN CO	25	Inactive
ELMHURST	ELMHURST	45,000	Active
FAIRWAY GROVE APTS	LISLE TWP	300	Inactive
FAR HILLS SBDV	WAYNE TWP	175	Inactive
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
FOUR LAKES VLG CONDO ASSN 1	LISLE TWP	1,200	Inactive
FOUR LAKES VLG SBDV	LISLE TWP	2,600	Inactive
GLEN ELLYN	GLEN ELLYN	28,850	Active
GLEN ELLYN HEIGHTS SUBDIVISION	DARIEN	1,931	Active
GLENDALE HEIGHTS	GLENDALE HEIGHTS	33,176	Active
GODAIR HOMES	DOWNERS GR TWP	230	Inactive
HIGHLAND HILLS SD	DARIEN	1,071	Inactive
HINSDALE	HINSDALE	17,900	Active
HINSWOOD SBDV	DOWNERS GR TWP	3,700	Inactive
HOBSON VALLEY WATER SYSTEM	DARIEN	400	Active
IL AMERICAN-ARROWHEAD	GODFREY	1,581	Active
IL AMERICAN-COUNTRY CLUB	GODFREY	1,014	Active
IL AMERICAN-DUPAGE UTILITY	GODFREY	6,613	Active
IL AMERICAN-LIBERTY RIDGE EAST	GODFREY	320	Active
IL AMERICAN-LIBERTY RIDGE WEST	GODFREY	3,307	Active
IL AMERICAN-LOMBARD HEIGHTS	GODFREY	679	Active
IL AMERICAN-VALLEY VIEW	GODFREY	6,721	Active
ILLINOIS BENEDICTINE COLLEGE	LISLE TWP	2,700	Inactive
ITASCA	ITASCA	9,506	Active
LAKE IN THE WOODS SBDV	DOWNERS GR TWP	1,060	Inactive
LIBERTY PARK HOMEOWNERS ASSOCIATION	WESTMONT	950	Active
LISLE	LISLE	24,233	Active
LISLE (OLD IL MUN)	LISLE	1,200	Inactive
LOMBARD	LOMBARD	44,476	Active
MAPLE HILL IMPRV ASSN	DOWNERS GR TWP	200	Inactive
NAPERVILLE	NAPERVILLE	156,406	Active
NORTH REGIONAL WATER FAC	DARIEN	770	Active
NORTHSIDE PETERSON WLFND	BLOOMINGDALE TWP	25	Inactive
NORTHWEST BELMONT IMPROVEMENT ASSOCIATIO	DOWNERS GROVE	75	Inactive
OAK BROOK	OAK BROOK	9,400	Active
OAKBROOK TERRACE	OAKBROOK TERRACE	1,440	Active
PLEASANT RIDGE MHP	CHICAGO	284	Active
POLO DR AND SADDLE RD SUBDIVISION	WHEATON	93	Active
PRAIRIE PATH WATER COMPANY-CLARENDON	ST. CHARLES	850	Active
ROSELLE	ROSELLE	22,897	Active
ROSEWOOD TRACE SBDV	DOWNERS GR TWP	5,500	Inactive
SOUTH BURDETTE WTR	BLOOMINGDALE TWP	25	Inactive
SOUTH GROVE SBDV	DOWNERS GR TWP	40	Inactive
SOUTHEAST REGIONAL WATER FACILITY	DARIEN	6,940	Active
ST CHARLES CMNTY WLFND 2	BLOOMINGDALE TWP	30	Inactive
ST CHARLES COMMSSION WELLFUND 3	CAROL STREAM	24	Inactive
ST OF ILL UOFI DRUG HORT EXPT	—	25	Inactive
STEEPLE RUN SBDV	DARIEN	1,931	Active
TEE AND GREEN SUBDIVISION	WHEATON	0	Inactive
TRI-STATE VILLAGE	HINSDALE	636	Inactive
VALLEY VIEW	VALLEY VIEW	25	Inactive
VILLA PARK	VILLA PARK	22,263	Active
WALL'S MHP	YORK TWP	25	Inactive
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
WEST CHICAGO	WEST CHICAGO	25,166	Active
WESTMONT	WESTMONT	24,161	Active
WHEATON	WHEATON	53,970	Active
WILLOWBROOK	WILLOWBROOK	9,000	Active
WINFIELD	WINFIELD	9,835	Active
WOOD DALE	WOOD DALE	14,012	Active
WOOD DALE ESTATES	MELROSE PARK	145	Active
WOODRIDGE	WOODRIDGE	33,566	Active
WOODRIDGE-FARMINGDALE	DOWNERS GR TWP	2,865	Inactive
YORK CENTER COOP	DARIEN	212	Inactive
YORK TOWNSHIP WATER SYSTEM	DARIEN	1,423	Active