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 |
|---|---|---|---|---|
| Wrights Mobile Home Park | Whitewater, WI | 240 | 35 | - |
| Manheim Milwaukee Auto Auction House & Detail Shop | Caledonia, WI | 240 | 84 | - |
| Oxford Elementary | Westfield, WI | 240 | 5 | - |
| Bostwick Valley MHP | West Salem, WI | 240 | 22 | - |
| WI DNR Trout Lk Nat Trl 65 | Boulder Junction, WI | 240 | 0 | - |
| WI DNR Trout Lk Cathedral Pt | Boulder Junction, WI | 240 | 0 | - |
| WI DNR Trout Lk N Cmpgd 52 | Boulder Junction, WI | 240 | 0 | - |
| WI DNR Trout Lk N Cmpgd 51 | Boulder Junction, WI | 240 | 4 | - |
| WI DNR Trout Lk N Cmpgd 50 | Boulder Junction, WI | 240 | 0 | - |
| WI DNR Trout Lk South Cmpgd Site 1009 | Boulder Junction, WI | 240 | 0 | - |
| Weyerhaeuser Waterworks | Weyerhaeuser, WI | 238 | 244 | - |
| Ithaca Public School - Gym | Richland Center, WI | 235 | 4 | - |
| St Paul Lutheran Ch Fremont | Fremont, WI | 235 | 1 | - |
| Dairy State Cheese | Rudolph, WI | 235 | 32 | - |
| Harvest Evangelical Free Church | Beaver Dam, WI | 234 | 0 | - |
| Our Lady of the Holyland Parish St John Site | Malone, WI | 234 | 12 | - |
| Sullivan Elementary School | Jefferson, WI | 233 | 16 | - |
| Fulton Congregational Church | Edgerton, WI | 232 | 2 | - |
| Xpo Logistics | Ann Arbor, WI | 232 | 27 | - |
| WI DOT Wayside 4 Richfield | Madison, WI | 232 | 0 | - |
| Immanuel Lutheran Church | Johnson Creek, WI | 231 | 3 | - |
| Shelby TN of SD 2 Arbor Hl | La Crosse, WI | 231 | 83 | - |
| Grande Cheese Co Brownsville | Fond Du Lac, WI | 230 | 11 | - |
| Washington Co Golf Course Clubhouse | West Bend, WI | 230 | 0 | - |
| Genesee Lake School South | Oconomowoc, WI | 230 | 42 | - |
| WI DNR Kmsfnu Long Lake S Bath House | Madison, WI | 230 | 1 | - |
| Johnsonville Meadowside Plant | Sheboygan Falls, WI | 230 | 4 | - |
| Rawhide Boys Ranch Central Services | New London, WI | 230 | 2 | - |
| Parkland Town Hall | South Range, WI | 230 | 19 | - |
| Community United Methodist Church | Elm Grove, WI | 229 | 80 | - |
| Pernats of Ixonia | Watertown, WI | 227 | 0 | - |
| St Marys Sch | Cato, WI | 226 | 198 | - |
| Ave Maria Academy | Plum City, WI | 226 | 40 | - |
| WI DNR Gov Dodge Twin Valley 300 Camp | Dodgeville, WI | 225 | 12 | - |
| Pine Valley Community Village | Richland Center, WI | 225 | 20 | - |
| WI DNR Mirror Lake Cliffwood | Baraboo, WI | 225 | 12 | - |
| Browns Lake Mobile Home CT | Oak Creek, WI | 225 | 162 | - |
| Maplewood Village | Bayside, WI | 225 | 49 | - |
| White Pine Pavillion | Bloomer, WI | 225 | 23 | - |
| Meyer Utility Structures LLC | Hager City, WI | 225 | 66 | - |
| Union Center Waterworks | Union Center, WI | 225 | 70 | - |
| St Thomas Catholic Church | Athens, WI | 225 | 17 | - |
| Ntc Ag Center | Wausau, WI | 225 | 6 | - |
| Chippewa Ranch Camp Mess Hall | Eagle River, WI | 225 | 3 | - |
| Camp Manito-Wish YMCA Kitchen | Boulder Junction, WI | 225 | 0 | - |
| Camp Manito-Wish YMCA Main | Boulder Junction, WI | 225 | 4 | - |
| Gratiot Waterworks | Gratiot, WI | 224 | 305 | - |
| Peace Lutheran Church | Rosendale, WI | 224 | 12 | - |
| Piggly Wiggly Howards Grove | Sheboygan, WI | 224 | 4 | - |
| North Haven Pool Well | Fish Creek, WI | 223 | 3 | - |