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 |
| Fox Hill RV Park 4 | Baraboo, WI | 100 | 0 | - |
| Fox River Park North Well | Bristol, WI | 100 | 0 | - |
| Fox River Park South Well | Bristol, WI | 100 | 4 | - |
| Amorim Cork Composites | Trevor, WI | 100 | 284 | - |
| Brighton Dale Co Park | Bristol, WI | 100 | 3 | - |
| Petrifying Springs Madrigano Well | Bristol, WI | 100 | 6 | - |
| Petrifying Springs Concession | Bristol, WI | 100 | 12 | - |
| American Legion Post 293 | Silver Lake, WI | 100 | 7 | - |
| Petrifying Springs Main Office | Bristol, WI | 100 | 0 | - |
| Twin Lakes Amoco | Twin Lakes, WI | 100 | 0 | - |
| Kenosha County Veterans Memorial Park | Bristol, WI | 100 | 0 | - |
| Whitnall Park Golf Tee 5 | Wauwatosa, WI | 100 | 0 | - |
| Brown Deer Park Comfort Station | Wauwatosa, WI | 100 | 11 | - |
| Ravine Farms Hm Owners Assoc | Mequon, WI | 100 | 32 | - |
| Grace Lutheran | Thiensville, WI | 100 | 0 | - |
| Mequon Office Complex 11516 Bldg | Mequon, WI | 100 | 40 | - |
| Norscot Group Inc | Mequon, WI | 100 | 8 | - |
| Jorgensen Conveyors Inc | Mequon, WI | 100 | 38 | - |
| River Lake Subdivision | Mequon, WI | 100 | 45 | - |
| Mequon Office Complex 11514 Bldg | Mequon, WI | 100 | 30 | - |
| Wyngate Subdivision | Mequon, WI | 100 | 11 | - |
| Woodridge Estates | Mequon, WI | 100 | 84 | - |
| Bog Golf Course Halfway House | Saukville, WI | 100 | 7 | - |
| Bog Golf Course East Comfort Station Tee 14 | Saukville, WI | 100 | 3 | - |
| Bella Via Dance Studio | Mequon, WI | 100 | 17 | - |
| Bog Golf Course West Comfort Station Tee 3 | Saukville, WI | 100 | 12 | - |
| Lutheran Chapel of the Cross | Racine, WI | 100 | 11 | - |
| Franksville Memorial Park Area 1 - Front Old Well | Sturtevant, WI | 100 | 41 | - |
| Little Country Store | Burlington, WI | 100 | 24 | - |
| Tichigan Lake Civic Center | Waterford, WI | 100 | 53 | - |
| Days Inn | Sturtevant, WI | 100 | 19 | - |
| Miller Brothers Partnership | Big Bend, WI | 100 | 19 | - |
| Waterford Town Park | Waterford, WI | 100 | 0 | - |
| A & W Franksville | Franksville, WI | 100 | 0 | - |
| Ludwell Estates | Elkhorn, WI | 100 | 165 | - |
| House of the Lord Church | Elkhorn, WI | 100 | 23 | - |
| Bunker Bar & Grill | Elkhorn, WI | 100 | 0 | - |
| Bethel United Methodist Church | Elkhorn, WI | 100 | 31 | - |
| Scenic Ridge Campground Top of Hill Well | Whitewater, WI | 100 | 16 | - |
| Millard Community Church | Elkhorn, WI | 100 | 32 | - |
| East Delavan Baptist Church | Delavan, WI | 100 | 23 | - |
| Beber Camp Shower House | Mukwonago, WI | 100 | 16 | - |
| Beber Camp Gym Well | Mukwonago, WI | 100 | 21 | - |
| Beber Camp Pool Well | Mukwonago, WI | 100 | 6 | - |
| Creek Road Community Church | Delavan, WI | 100 | 4 | - |
| Richfield Roadhouse | Germantown, WI | 100 | 26 | - |
| Glacier Hills Co Pk Restrooms | West Bend, WI | 100 | 0 | - |
| Faith United Church of Christ | Slinger, WI | 100 | 9 | - |
| St Pauls United Church of Christ | Colgate, WI | 100 | 20 | - |
| Salem United Church of Christ | Campbellsport, WI | 100 | 129 | - |