Public Water Systems
10,988 active public water systems in WI, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| Gfl Environmental Office | Muskego, WI | 95 | 0 | - |
| Stoney Creek Adult Community | Muskego, WI | 95 | 307 | - |
| Veolia Es Solid Waste Midwest | Muskego, WI | 95 | 0 | - |
| Lee Precision Inc | Hartford, WI | 95 | 1 | - |
| Harrison Vil of Athletic Field | Menasha, WI | 95 | 12 | - |
| S&s Jerseyland Dairy | Sturgeon Bay, WI | 95 | 0 | - |
| St Paul Lutheran Sch & Ch | Luxemburg, WI | 95 | 0 | - |
| Wells Concrete Prod Co | Valders, WI | 95 | 13 | - |
| Duck Inn MHP 1 | Pardeeville, WI | 95 | 245 | - |
| Andersons Trailer Court | Cameron, WI | 95 | 166 | - |
| Cedar Falls Acres MHP | Menomonie, WI | 95 | 372 | - |
| W R R Environmental Services Co Inc | Eau Claire, WI | 95 | 136 | - |
| New Richmond Estates | Colfax, WI | 95 | 39 | - |
| St Germain Subway | Three Lakes, WI | 95 | 0 | - |
| River Cities High School | Wisconsin Rapids, WI | 95 | 10 | - |
| Manitou Falls Sanitary District No 1 | Superior, WI | 95 | 709 | - |
| Matthias Academy | Bristol, WI | 94 | 1 | - |
| First Congregational Church Genesee Ucc | Mukwonago, WI | 94 | 1 | - |
| Faith Baptist Church & High School Waukesha | Waukesha, WI | 94 | 437 | - |
| Deer Valley Golf Course | Barneveld, WI | 93 | 0 | - |
| Terrace Shores Ev Free Ch | Markesan, WI | 93 | 5 | - |
| St Adalbert Catholic Church | Rosholt, WI | 93 | 250 | - |
| Glen Flora Waterworks | Glen Flora, WI | 93 | 691 | - |
| Buliks Mobile Home Park | Spooner, WI | 93 | 164 | - |
| Associated Training Services (Diesel Driving School) | Sun Prairie, WI | 92 | 0 | - |
| Christ Alone South Campus | Thiensville, WI | 92 | 11 | - |
| House in the Wood | Chicago, WI | 92 | 0 | - |
| St Pauls Lutheran Ch & Sch | Mount Calvary, WI | 92 | 56 | - |
| Rawhide Youth Homes | New London, WI | 92 | 17 | - |
| Elton Mall and Cafe | Elton, WI | 92 | 0 | - |
| Sassy Cow Creamery Store | Columbus, WI | 91 | 8 | - |
| Hillcrest Bible Church | Oregon, WI | 91 | 4 | - |
| Trinity Lutheran Church and Day School | Minocqua, WI | 91 | 72 | - |
| Suburban Heights MHP | Pardeeville, WI | 90 | 18 | - |
| Furst McNess Company | Lodi, WI | 90 | 12 | - |
| St Therese Chapel | Lodi, WI | 90 | 3 | - |
| Waunakee Baptist Church | Waunakee, WI | 90 | 9 | - |
| Kingdom Hall of Jehovahs Witnesses | Mt Horeb, WI | 90 | 4 | - |
| Oak Park Community | Dickeyville, WI | 90 | 159 | - |
| St John Ev Lutheran Church | North Freedom, WI | 90 | 0 | - |
| WI DNR Richard Bong Headquarters | Madison, WI | 90 | 51 | - |
| Trevor Center | Grayslake, WI | 90 | 4 | - |
| Linden Lane Apts 117 | Saukville, WI | 90 | 168 | - |
| Thiensville Professional Park | Thiensville, WI | 90 | 2 | - |
| Brians Boathouse | Wind Lake, WI | 90 | 8 | - |
| Town Hall Apts | Elkhorn, WI | 90 | 19 | - |
| Innovation Station Childcare Facility | Richfield, WI | 90 | 4 | - |
| Gentle Dental Emporium | West Bend, WI | 90 | 0 | - |
| Country Aire Apartments 2 | Delafield, WI | 90 | 27 | - |
| Gws Tool Group | North Lake, WI | 90 | 107 | - |