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 |
|---|---|---|---|---|
| Don Q Inn Hotel | Dodgeville, WI | 174 | 0 | - |
| Beloit Club | Beloit, WI | 174 | 5 | - |
| Mequon UMC & North Shore Preschool | Mequon, WI | 174 | 106 | - |
| Shores of Fox Lake | Fox Lake, WI | 172 | 5 | - |
| Boat House Pub & Eatery | Fox Lake, WI | 172 | 7 | - |
| Squires I | Mequon, WI | 172 | 237 | - |
| Lannon Water Utility | Lannon, WI | 172 | 9 | - |
| Stoughton Country Club | Stoughton, WI | 170 | 16 | - |
| Cave of the Mounds Visitor Center | Blue Mounds, WI | 170 | 5 | - |
| Quality Inn | Madison, WI | 170 | 0 | - |
| Fox Lake Golf Club | Fox Lake, WI | 170 | 12 | - |
| Christmas Mt Prv Site | Wisconsin Dells, WI | 170 | 17 | - |
| Bays Nail Spa | Thiensville, WI | 170 | 4 | - |
| Bog Golf Course Clubhouse | Saukville, WI | 170 | 0 | - |
| North Cape School | Franksville, WI | 170 | 268 | - |
| Troy Center Sanitary District | Troy Center, WI | 170 | 72 | - |
| Kikkoman Foods | Walworth, WI | 170 | 97 | - |
| Americold Logistics | Darien, WI | 170 | 203 | - |
| Erin Hills Gc - Old Clubhouse | Hartford, WI | 170 | 0 | - |
| Erin Hills Gc - Cart Barn | Hartford, WI | 170 | 0 | - |
| Erin Hills Gc - Halfway House Rest Station South | Hartford, WI | 170 | 14 | - |
| Erin Hills Gc - Western Hydration Stations | Hartford, WI | 170 | 4 | - |
| Doorway to Learning | Sturgeon Bay, WI | 170 | 17 | - |
| Trinity Lutheran Family Ctr | Manitowoc, WI | 170 | 20 | - |
| St Johns Lutheran Sch | Random Lake, WI | 170 | 355 | - |
| Christ Ev Lutheran School | Weyauwega, WI | 170 | 315 | - |
| Jehovahs Witnesses la Crosse | La Crosse, WI | 170 | 0 | - |
| Houlton MHP LLC | Orlando, WI | 170 | 158 | - |
| Wilson Waterworks | Wilson, WI | 170 | 44 | - |
| Hustler Waterworks | Hustler, WI | 170 | 9 | - |
| Little Florida | Merrill, WI | 170 | 82 | - |
| Camp Highlands | Gainesville, WI | 170 | 0 | - |
| Conover Evangelical Free Church | Conover, WI | 170 | 21 | - |
| Green Acres Supper Club | Sauk City, WI | 168 | 0 | - |
| Evansville Golf Club Clubhouse | Evansville, WI | 168 | 0 | - |
| Boxed and Burlap Bathroom Well | Elkhorn, WI | 168 | 0 | - |
| Crossway Community Church | Bristol, WI | 167 | 0 | - |
| Kettle Moraine Plaza | Wales, WI | 167 | 0 | - |
| St Peter Evangelical Church | Elkhart Lake, WI | 167 | 35 | - |
| Bible Baptist Church of Utica | Stoughton, WI | 166 | 33 | - |
| Hidden Meadows | Watertown, WI | 166 | 90 | - |
| Meadowbrook Country Club Maintenance Shed | Racine, WI | 166 | 6 | - |
| Strohwig Industries | Richfield, WI | 166 | 2 | - |
| Sky High Camping - Main System | Portage, WI | 165 | 23 | - |
| Rhodes Well 2 | Columbus, WI | 165 | 17 | - |
| Rhodes Well 1 | Columbus, WI | 165 | 140 | - |
| Sandras on the Park | Hales Corners, WI | 165 | 13 | - |
| Sunnys Plaza | Kansasville, WI | 165 | 14 | - |
| Reflections Village | Burlington, WI | 165 | 0 | - |
| Eagleville Elementary School | Mukwonago, WI | 165 | 23 | - |