Wisconsin utilities 401 to 500.

Each serves 499 to 850 people, as it reports to EPA. Your ZIP code finds yours faster.

Find a Wisconsin utility, city or county

401 to 500 of 1,026, by people served

Wisconsin utilities, 401 to 500 of 1,026, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Hillcrest Estates MHP	Altoona	850	Not sampled	2
Necedah Waterworks	Necedah	844	Not sampled	1
Highland Waterworks	Highland	842	Not sampled	0
Dorchester Waterworks	Dorchester	834	Not sampled	1
Birnamwood Waterworks	Birnamwood	832	Not sampled	0
Argyle Waterworks	Argyle	823	Not sampled	2
Hobart Waterworks S A 3	Hobart	820	Not sampled	0
Footville Waterworks	Footville	816	Not sampled	1
Pepin Waterworks	Pepin	816	Not sampled	7
Blanchardville Waterworks	Blanchardville	810	Not sampled	0
Pittsville Waterworks	Pittsville	800	Not sampled	0
Westport Water Utility	Waunakee	800	Not sampled	0
Elmwood Waterworks	Elmwood	798	Not sampled	0
Stoddard Waterworks	Stoddard	793	Not sampled	3
Plain Waterworks	Plain	792	Not sampled	1
Friendship Waterworks	Friendship	781	Not sampled	0
Cassville Waterworks	Cassville	777	Not sampled	1
Alma Waterworks	Alma	769	Not sampled	0
Wyocena Waterworks	Wyocena	768	Not sampled	0
Cambria Waterworks	Cambria	767	Not sampled	1
Clayton Waterworks	Clayton	765	Not sampled	1
Coon Valley Waterworks	Coon Valley	765	Not sampled	1
Mercer Sanitary District	Mercer	760	Not sampled	0
Wonewoc Waterworks	Wonewoc	758	Not sampled	0
Whitelaw Waterworks	Whitelaw	757	Not sampled	1
Glidden Sanitary District	Glidden	750	Not sampled	2
Lake Meadows Water Trust	Muskego	750	Not sampled	0
Wabeno Sanitary Dist 1	Wabeno	750	Not sampled	0
Mellen Water Utility	Mellen	731	Not sampled	0
Coleman Waterworks	Coleman	727	Not sampled	0
Crystal Lake Rv Resort LLC	Lodi	725	Not sampled	4
Hale Park Meadows	Muskego	720	Not sampled	0
Cascade Waterworks	Cascade	719	Not sampled	0
Montfort Waterworks	Montfort	718	Not sampled	2
Potosi Waterworks	Potosi	718	Not sampled	2
Reeseville Waterworks	Reeseville	718	Not sampled	2
La Farge Waterworks	La Farge	712	Not sampled	0
Wauzeka Waterworks	Wauzeka	711	Not sampled	0
Almena Waterworks	Almena	705	Not sampled	0
St Nazianz Waterworks	St Nazianz	705	Not sampled	0
Tigerton Waterworks	Tigerton	705	Not sampled	1
Birch Terrace Mobile Home Community	Menomonie	700	Not sampled	0
Durham Meadows Water Trust	Muskego	700	Not sampled	0
Saddle Ridge Estates	Portage	700	Not sampled	1
Ridgeway Waterworks	Ridgeway	690	Not sampled	2
Bloomington Waterworks	Bloomington	682	None found	0
Stockbridge Waterworks	Stockbridge	680	Not sampled	1
Viola Waterworks	Viola	667	Not sampled	0
Livingston Waterworks	Livingston	664	Not sampled	0
Prentice Waterworks	Prentice	660	Not sampled	0
Norwalk Waterworks	Norwalk	653	Not sampled	0
Webster Waterworks	Webster	652	Not sampled	0
Greenleaf Waterworks	Greenleaf	650	Not sampled	0
Rock River Leisure Estates Coop	Edgerton	650	Not sampled	0
Rockland Waterworks	Rockland	642	Not sampled	1
Camp Douglas Waterworks	Camp Douglas	640	Not sampled	0
Eleva Waterworks	Eleva	635	Not sampled	2
Brownsville Waterworks	Brownsville	630	Not sampled	1
Bruce Waterworks	Bruce	620	Not sampled	0
Mequon Trail Townhomes	Mequon	615	Not sampled	1
Huntington Park	Mequon	600	Not sampled	0
Iron River Sanitary District	Iron River	600	Not sampled	1
Village of Bristol Waterworks	Bristol	598	Not sampled	0
Soldiers Grove Waterworks	Soldiers Grove	592	Not sampled	0
North Freedom Waterworks	North Freedom	589	Not sampled	0
Delafield Square	Delafield	587	Not sampled	0
Lena Waterworks	Lena	585	Not sampled	1
Wausaukee Waterworks	Wausaukee	585	Not sampled	2
Autumn Ridge Water System LLC	Ixonia	575	Not sampled	0
Rocky Knoll Health Care Fac	Plymouth	564	Not sampled	0
Stetsonville Waterworks	Stetsonville	563	Not sampled	4
Minong Waterworks	Minong	561	Not sampled	0
Kieler SD No 1	Kieler	560	Not sampled	1
Ontario Waterworks	Ontario	554	Not sampled	1
Star Prairie Waterworks	Star Prairie	553	Not sampled	0
Hatley Waterworks	Hatley	550	Not sampled	0
Phelps Sanitary District	Phelps	550	Not sampled	0
New Auburn Waterworks	New Auburn	549	Not sampled	1
Linden Waterworks	Linden	547	Not sampled	0
Avoca Waterworks	Avoca	545	Not sampled	2
Boyd Waterworks	Boyd	540	Not sampled	0
Warrens Waterworks	Warrens	540	Not sampled	0
Ettrick Waterworks	Ettrick	536	Not sampled	0
Gresham Waterworks	Gresham	534	Not sampled	1
Merrillan Waterworks	Merrillan	531	Not sampled	1
Spacious Acres Mobile Home Community	Sullivan	525	Not sampled	0
Melrose Waterworks	Melrose	524	Not sampled	1
Suring Waterworks	Suring	517	Not sampled	2
Vesper Waterworks	Vesper	512	Not sampled	0
Adell Waterworks	Adell	510	Not sampled	1
Clark County Rehabilitation & Living Center	Owen	510	Not sampled	4
Withee Waterworks	Withee	506	Not sampled	0
St Joseph San Dist 1	La Crosse	503	Not sampled	0
Country Estates Sanitary District Town of Lyons 1	Burlington	500	Not sampled	2
Drummond Sanitary District	Drummond	500	Not sampled	0
Interlaken Resort and Village	Lake Geneva	500	Not sampled	0
Lake Drive Water Trust	Oconomowoc	500	Not sampled	1
Three Lakes Sanitary District	Three Lakes	500	Not sampled	2
Waldo Waterworks	Waldo	500	Not sampled	0
Bay City Waterworks	Bay City	499	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.

401 to 500 of 1,026, by people served

Where to go next