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 |
|---|---|---|---|---|
| Vesper Waterworks | Vesper, WI | 491 | 19 | - |
| Gays Mills Waterworks | Gays Mills, WI | 490 | 46 | - |
| Wilton Waterworks | Wilton, WI | 490 | 40 | - |
| Bayfield Waterworks | Bayfield, WI | 488 | 43 | - |
| Forest Junction Pub Util | Forest Junction, WI | 487 | 59 | Clean |
| Alma Center Waterworks | Alma Center, WI | 487 | 198 | - |
| Knapp Waterworks | Knapp, WI | 486 | 82 | - |
| Riverview School | Silver Lake, WI | 485 | 10 | - |
| Auburndale Elementary School | Auburndale, WI | 485 | 94 | - |
| Lakeview Specialty Hospital | Waterford, WI | 484 | 440 | - |
| Lakeview School | Muskego, WI | 480 | 261 | - |
| South Wayne Waterworks | South Wayne, WI | 478 | 278 | - |
| Mount Calvary Waterworks | Mt Calvary, WI | 478 | 2 | - |
| Tremain Mobile Home Park | Stevens Point, WI | 475 | 36 | - |
| Synergy Cooperative - Ridgeland | Ridgeland, WI | 475 | 35 | - |
| Brandybrook Subdivision | Wales, WI | 474 | 11 | - |
| Lyndon Station Waterworks | Lyndon Station, WI | 474 | 184 | - |
| House on the Rock Resort | Spring Green, WI | 470 | 85 | - |
| Stone Bank School | Oconomowoc, WI | 470 | 6 | - |
| WI DNR Lake Wissota Cmpgd | Madison, WI | 469 | 0 | - |
| Road America Center Well | Elkhart Lake, WI | 468 | 3 | - |
| Road America Office North Well | Elkhart Lake, WI | 468 | 11 | - |
| Road America Paddock South Well | Elkhart Lake, WI | 468 | 8 | - |
| Road America Vip Building Well | Elkhart Lake, WI | 468 | 14 | - |
| Road America Restroom & Showers Well | Elkhart Lake, WI | 468 | 6 | - |
| Road America Go Cart Campground Well | Elkhart Lake, WI | 468 | 3 | - |
| Road America Turn 7 Well | Elkhart Lake, WI | 468 | 0 | - |
| Road America Turn 3 Well | Elkhart Lake, WI | 468 | 0 | - |
| Road America Turn 4 Well | Elkhart Lake, WI | 468 | 0 | - |
| Road America Midway Restroom Well | Elkhart Lake, WI | 468 | 0 | - |
| Road America Turn 6 Well | Elkhart Lake, WI | 468 | 0 | - |
| Jakes Mobil | Hoffman Estate, WI | 465 | 9 | - |
| Glenbeulah Waterworks | Glenbeulah, WI | 461 | 138 | - |
| Cobb Waterworks | Cobb, WI | 458 | 137 | - |
| Kendall Waterworks | Kendall, WI | 458 | 79 | - |
| Alliance Bible Church | Mequon, WI | 457 | 0 | - |
| Haven Christian Church Inc, The | Eau Claire, WI | 457 | 0 | - |
| Coloma Waterworks | Coloma, WI | 454 | 40 | - |
| Daniel Boone Conservation League Club House | Hubertus, WI | 453 | 8 | - |
| Poplar Creek Church | New Berlin, WI | 453 | 0 | - |
| Village Bp | Thiensville, WI | 452 | 32 | - |
| Fairchild Waterworks | Fairchild, WI | 451 | 277 | - |
| Bay View Heights Inc | Orem, WI | 450 | 65 | - |
| Bluffview Sanitary District | Prairie Du Sac, WI | 450 | 32 | - |
| Wheatland Estates | Farmington Hills, WI | 450 | 213 | - |
| St Johns Catholic Church | Twin Lakes, WI | 450 | 2 | - |
| River Barn Park | Mequon, WI | 450 | 0 | - |
| Parquelynn Village | Nashotah, WI | 450 | 288 | - |
| North Lake School | North Lake, WI | 450 | 181 | - |
| Hobart Waterworks S a 2 | Hobart, WI | 450 | 12 | - |