Illinois utilities 401 to 491.

Each serves 200 to 4,100 people, as it reports to EPA. Your ZIP code finds yours faster.

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401 to 491 of 491, by people served

Illinois utilities, 401 to 491 of 491, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Woodhaven	Sublette	4,100	None found	1
Millstadt	Millstadt	4,071	PFBS	0
Coal Valley PWD	Marion	4,023	None found	0
Wasco SD	Wasco	4,000	None found	0
Burnham	Burnham	3,989	None found	0
North East Central PWD	Edwardsville	3,975	PFOA, PFOS	0
Hamilton County Water District	McLeansboro	3,958	None found	0
Rosemont	Rosemont	3,952	None found	0
Marshall	Marshall	3,947	None found	0
Corinth PWD	Pittsburg	3,927	None found	0
South Chicago Heights	South Chicago Heights	3,924	None found	0
Saline Valley Conservancy District	Eldorado	3,921	None found	3
Westville	Westville	3,917	None found	0
Metamora	Metamora	3,895	None found	0
Coal Valley	Coal Valley	3,873	None found	1
Wonder Lake	Wonder Lake	3,870	None found	1
Rochester	Rochester	3,856	None found	0
Red Bud	Red Bud	3,804	None found	3
Greene County RWD	Carrollton	3,786	Not sampled	0
Byron	Byron	3,784	None found	0
Pleasant Valley PWD	Peoria	3,783	PFHxS, PFBS	1
Embarras Area Water District	Charleston	3,750	None found	0
Gillespie	Gillespie	3,737	None found	2
Lcpw - Pekara Subdivision		3,711	None found	0
Fountain Water District	Valmeyer	3,650	None found	1
Rend Lake Inter - City Water System	Benton	3,650	Not sampled	0
Fairbury	Fairbury	3,633	None found	1
Riverwoods	Riverwoods	3,618	None found	0
IL American - Tolono	Tolono	3,604	Not sampled	4
Woodlawn	Woodlawn	3,587	None found	0
Three County PWD	New Douglas	3,575	Not sampled	5
Hainesville	Hainesville	3,528	None found	0
Western Wayne Water District	Wayne City	3,516	Not sampled	0
Johnston City	Johnston City	3,509	None found	1
South Jacksonville	South Jacksonville	3,501	None found	1
Gibson City	Gibson City	3,500	None found	0
Le Roy	Le Roy	3,498	None found	4
Forsyth	Forsyth	3,490	None found	1
Aledo	Aledo	3,470	None found	0
Tritownship Water District	Highland	3,470	None found	0
Oregon	Oregon	3,449	None found	1
Hardinville Water Company	Robinson	3,403	Not sampled	0
Mackinaw	Mackinaw	3,399	None found	0
Rushville	Rushville	3,375	Not sampled	0
Carlyle	Carlyle	3,373	None found	0
Lake Sara Area Water Co - Op, Inc.	Effingham	3,352	None found	0
Fulton	Fulton	3,346	None found	1
Pontoon Beach PWD	Pontoon Beach	3,325	None found	0
Galena	Galena	3,308	None found	1
IL American - Liberty Ridge West	Godfrey	3,307	None found	0
Abingdon	Abingdon	3,275	PFOA, PFOS, PFBS	2
Casey	Casey	3,274	None found	2
Virden	Virden	3,274	None found	0
Nashville	Nashville	3,230	None found	0
North East Marion County Water Cmpny	Salem	3,220	None found	0
Dixmoor	Dixmoor	2,973	PFOA, PFOS	0
Bushnell	Bushnell	2,972	None found	0
Havana	Havana	2,963	None found	0
Holiday Shores SD	Edwardsville	2,840	PFOA	3
Southern IL University - Edwardsville	Edwardsville	2,817	PFBS	0
Kenilworth	Kenilworth	2,514	None found	0
Carrollton	Carrollton	2,513	None found	0
Prairie Path Water Company - Galena	Galena	2,294	None found	1
Mount Olive	Aviston	2,193	None found	3
Crystal Lawns Addition Improvement Assoc	Joliet	1,435	PFBS	0
Valmeyer	Valmeyer	1,263	None found	0
IL American - Andalusia	Andalusia	1,184	None found	0
IL American - Country Club	Godfrey	1,014	None found	0
Mendon	Mendon	953	None found	0
Kinmundy	Kinmundy	940	None found	0
Willow Lake Estates MHP	Elgin	920	None found	1
Shady Oaks MHP	Chicago	912	None found	0
Hanover	Hanover	863	None found	0
Wee - Ma - Tuk Water District	Cuba	863	None found	0
Poplar Grove West - Countryside	Poplar Grove	790	None found	0
Bluffs	Bluffs	748	None found	0
Ashkum	Ashkum	724	None found	1
Moro PWD	Moro	723	PFHxS, PFBS	1
Vandalia Correctional Center	Vandalia	700	None found	0
Prairie Path Water Company - Clarendon	St. Charles	625	None found	1
Blandinsville	Blandinsville	569	None found	0
West Liberty - Dundas Water District	Dundas	563	None found	1
Xenia	Xenia	542	None found	0
Buckley	Buckley	500	None found	0
Altona	Altona	483	None found	0
Buda	Buda	482	None found	4
Alexander Water District	Alexander	442	None found	4
Bookwalter Woods MHP	Gardner	389	None found	0
Lake Windermere Estates Subdivision	Tremont	300	None found	0
Dover	Dover	200	None found	1
Low Point Water District	Lowpoint	200	None found	0

Utilities EPA sampled under UCMR 5, plus any other community system serving 3,300 people or more. Smaller systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q2 and UCMR 5.