Wisconsin utilities 301 to 400.

Each serves 860 to 1,524 people, as it reports to EPA. Your ZIP code finds yours faster.

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301 to 400 of 1,026, by people served

Wisconsin utilities, 301 to 400 of 1,026, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Brooklyn Waterworks	Brooklyn	1,524	Not sampled	0
Cleveland Waterworks	Cleveland	1,524	Not sampled	1
Bangor Waterworks	Bangor	1,520	Not sampled	1
Hurley Waterworks	Hurley	1,515	Not sampled	5
Concordia University	Mequon	1,500	Not sampled	0
Independence Waterworks	Independence	1,500	Not sampled	0
Black Earth Waterworks	Black Earth	1,493	Not sampled	1
Edgar Waterworks	Edgar	1,491	Not sampled	1
Bonduel Waterworks	Bonduel	1,475	Not sampled	0
Orfordville Waterworks	Orfordville	1,475	Not sampled	0
Phillips Waterworks	Phillips	1,473	Not sampled	1
Grantsburg Waterworks	Grantsburg	1,460	Not sampled	0
Muscoda Waterworks	Muscoda	1,453	Not sampled	0
Augusta Waterworks	Augusta	1,450	Not sampled	1
Mishicot Waterworks	Mishicot	1,432	Not sampled	0
West Baraboo Waterworks	West Baraboo	1,414	Not sampled	0
Spring Valley Waterworks	Spring Valley	1,409	Not sampled	0
Cornell Waterworks	Cornell	1,390	Not sampled	2
Woodville Waterworks	Woodville	1,386	Not sampled	0
Markesan Waterworks	Markesan	1,365	Not sampled	0
Cadott Waterworks	Cadott	1,352	Not sampled	0
Maple Bluff Waterworks	Madison	1,342	Not sampled	0
Black Creek Waterworks	Black Creek	1,336	Not sampled	0
Elroy Waterworks	Elroy	1,333	Not sampled	0
Montello Waterworks	Montello	1,329	Not sampled	2
Hillsboro Waterworks	Hillsboro	1,325	Not sampled	8
Loyal Waterworks	Loyal	1,308	Not sampled	0
Manawa Waterworks	Manawa	1,300	Not sampled	0
Marion Waterworks	Marion	1,293	Not sampled	0
Blair Waterworks	Blair	1,280	Not sampled	1
Fall Creek Waterworks	Fall Creek	1,269	Not sampled	1
Gillett Waterworks	Gillett	1,264	Not sampled	0
Theresa Waterworks	Theresa	1,262	Not sampled	1
Barneveld Waterworks	Barneveld	1,258	Not sampled	3
Florence Utility Commission	Florence	1,250	Not sampled	0
Iola Waterworks	Iola	1,249	Not sampled	0
Frederic Waterworks	Frederic	1,241	Not sampled	0
Shullsburg Waterworks	Shullsburg	1,222	None found	0
Monticello Waterworks	Monticello	1,217	Not sampled	1
Lakeland University	Plymouth	1,200	Not sampled	0
Reedsville Waterworks	Reedsville	1,200	Not sampled	2
Rockvale MHP	Janesville	1,200	Not sampled	0
Wittenberg Waterworks	Wittenberg	1,200	Not sampled	0
Hazel Green Waterworks	Hazel Green	1,193	Not sampled	2
Hilbert Waterworks	Hilbert	1,176	None found	0
Princeton Waterworks	Princeton	1,166	Not sampled	1
Luck Waterworks	Luck	1,150	Not sampled	0
Cashton Waterworks	Cashton	1,120	Not sampled	0
Amherst Waterworks	Amherst	1,119	Not sampled	1
Dane Waterworks	Dane	1,117	Not sampled	0
Colfax Waterworks	Colfax	1,102	Not sampled	0
Glenwood City Waterworks	Glenwood City	1,102	Not sampled	0
Strum Waterworks	Strum	1,100	Not sampled	0
Oakhill Correctional Inst	Oregon	1,096	Not sampled	1
Rio Waterworks	Rio	1,095	Not sampled	1
Greenwood Waterworks	Greenwood	1,079	Not sampled	0
Turtle Lake Waterworks	Turtle Lake	1,073	Not sampled	0
Dickeyville Waterworks	Dickeyville	1,069	Not sampled	0
Robert William Park Water Association Inc	Milwaukee	1,065	Not sampled	0
Hustisford Waterworks	Hustisford	1,063	Not sampled	1
Clear Lake Waterworks	Clear Lake	1,061	Not sampled	0
Oakfield Waterworks	Oakfield	1,058	Not sampled	0
Ashwood Grove Edgewater	Fond Du Lac	1,046	Not sampled	0
Mosinee East System	Mosinee	1,046	Not sampled	0
Boyceville Waterworks	Boyceville	1,043	Not sampled	1
Balsam Lake Waterworks	Balsam Lake	1,031	Not sampled	0
Crivitz Waterworks	Crivitz	1,026	Not sampled	0
Athens Waterworks	Athens	1,025	Not sampled	1
Shelby TN of Wedgewood Vly	La Crosse	1,020	Not sampled	0
Albany Waterworks	Albany	1,018	Not sampled	0
Green Lake Waterworks	Green Lake	1,002	Not sampled	1
Bristol Village of East	Bristol	1,001	Not sampled	0
Sister Bay Waterworks	Sister Bay	1,000	Not sampled	0
Belmont Waterworks	Belmont	989	Not sampled	1
Fond Du Lac TN Water Utility	Fond Du Lac	980	Not sampled	1
Benton Waterworks	Benton	976	Not sampled	0
Valders Waterworks	Valders	954	Not sampled	0
Blue Mounds Waterworks	Blue Mounds	950	Not sampled	0
Laona Sanitary Dist	Laona	950	Not sampled	3
Shell Lake Waterworks	Shell Lake	950	Not sampled	1
Southern Wisconsin Center	Union Grove	950	Not sampled	2
Wisconsin Veterans Home	King	950	Not sampled	0
Arlington Waterworks	Arlington	946	Not sampled	4
Paddock Lake Waterworks	Paddock Lake	945	Not sampled	0
Rib Lake Waterworks	Rib Lake	945	Not sampled	2
Siren Waterworks	Siren	941	Not sampled	0
Iron Ridge Waterworks	Iron Ridge	937	Not sampled	0
Dresser Waterworks	Dresser	936	Not sampled	0
Owen Waterworks	Owen	936	Not sampled	0
Plainfield Waterworks	Plainfield	924	Not sampled	0
Shiocton Utilities	Shiocton	921	Not sampled	0
Milltown Waterworks	Milltown	915	Not sampled	0
Centuria Waterworks	Centuria	900	Not sampled	0
Elk Mound Waterworks	Elk Mound	895	Not sampled	0
Lone Rock Waterworks	Lone Rock	895	Not sampled	2
Montreal Waterworks	Montreal	887	Not sampled	3
Biron Water Utility	Wisconsin Rapids	879	Not sampled	0
Arena Waterworks	Arena	877	None found	0
Brandon Waterworks	Brandon	872	Not sampled	0
Allenton Sanitary District	Allenton	860	Not sampled	0

Every utility EPA sampled for PFAS under UCMR 5, any other community system serving 3,300 people or more, and any smaller one with results from 2020 on, from the state. Other systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q3, UCMR 5 and EPA’s 2012 to 2019 compliance results, and Wisconsin Department of Natural Resources, Drinking Water Program.

301 to 400 of 1,026, by people served

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