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 |
|---|---|---|---|---|
| Haugen Waterworks | Haugen, WI | 287 | 33 | - |
| Score | Franksville, WI | 286 | 0 | - |
| Danbury Sanitary District | Danbury, WI | 286 | 10 | - |
| WI DNR Yellowstone New Shower Building | Blanchardville, WI | 285 | 9 | - |
| WI DNR Yellowstone Campground | Blanchardville, WI | 285 | 33 | - |
| Indian Hill School | Fox Point, WI | 285 | 78 | - |
| Lakepoint Offices | Muskego, WI | 285 | 41 | - |
| Eden Meats and Corner Express | Eden, WI | 285 | 219 | - |
| Hollandale Waterworks | Hollandale, WI | 283 | 22 | - |
| Butternut Waterworks | Butternut, WI | 283 | 147 | - |
| Honor Elementary | Neosho, WI | 280 | 7 | - |
| First Congreg United Ch of Christ/Gingerbread Preschool | Watertown, WI | 280 | 6 | - |
| Farmington Elementary School | Kewaskum, WI | 280 | 35 | - |
| Arbors | Delafield, WI | 280 | 71 | - |
| Pines Event Center The | Rhinelander, WI | 280 | 14 | - |
| Milladore Waterworks | Milladore, WI | 280 | 18 | - |
| Good Shepherd by the Lake Lutheran Church | Stoughton, WI | 276 | 35 | - |
| St Anthony on the Lake School | Pewaukee, WI | 276 | 359 | - |
| Faith Christian School | Williams Bay, WI | 275 | 27 | - |
| Immanuel Lutheran Ch | Westfield, WI | 275 | 3 | - |
| Nichols Waterworks | Nichols, WI | 275 | 18 | - |
| Town of Farmington Sanitary District | Mindoro, WI | 275 | 41 | - |
| Sky Harbour Center | La Crosse, WI | 275 | 0 | - |
| Camp Ojibwa 2 | Deerfield, WI | 275 | 5 | - |
| Camp Ojibwa 1 | Deerfield, WI | 275 | 5 | - |
| Friends of Hunt Hill Audubon Sanctuary Main Camp | Sarona, WI | 275 | 1 | - |
| Maine Water Utility | Wausau, WI | 271 | 155 | - |
| Golf Club at Camelot The | Lomira, WI | 270 | 5 | - |
| Nlc Energy Denmark | Denmark, WI | 270 | 0 | - |
| Club Ten | Durand, WI | 270 | 37 | - |
| St Pauls School | Muskego, WI | 269 | 15 | - |
| Washington School | Waterford, WI | 266 | 80 | - |
| WI DNR Blue Mound Aquatic Center | Blue Mounds, WI | 265 | 0 | - |
| New House Richland | Richland Center, WI | 265 | 44 | - |
| Cedar Valley Cheese | Belgium, WI | 265 | 12 | - |
| Dancing Horses Stage Barn | Delavan, WI | 265 | 0 | - |
| Dancing Horses Game Room | Delavan, WI | 265 | 0 | - |
| Culvers Town & Country C Store | Sturgeon Bay, WI | 265 | 96 | - |
| Sheldon Water Utility | Sheldon, WI | 265 | 436 | - |
| Genoa Waterworks | Genoa, WI | 264 | 138 | - |
| Peace Lutheran Church | New Berlin, WI | 262 | 15 | - |
| North Bristol Sportsman Club | Sun Prairie, WI | 260 | 15 | - |
| Pleasant View Nursing Home | Monroe, WI | 260 | 112 | - |
| Adams Lutheran Church | Argyle, WI | 260 | 33 | - |
| Somers United Church of Christ & Busy Bee Child Care Center | Kenosha, WI | 260 | 66 | - |
| Park Place Subdivision | Mequon, WI | 260 | 6 | - |
| Schreiber Foods Inc | West Bend, WI | 260 | 10 | Clean |
| Westbury Bank | Germantown, WI | 260 | 10 | - |
| Willow Haven | Hazelhurst, WI | 260 | 30 | - |
| Marshfield Clinic Woodruff Center | Woodruff, WI | 260 | 8 | - |