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 |
| Sky Lodge Cc Main Complex | Montello, WI | 100 | 0 | - |
| Thal Acres Links & Lanes | Westfield, WI | 100 | 11 | - |
| Endeavor Elementary | Portage, WI | 100 | 0 | - |
| Sky Lodge Cc Cottonwood | Montello, WI | 100 | 0 | - |
| Evergreen Park | Suring, WI | 100 | 49 | - |
| Rueden Ridge Subdivision | Kaukauna, WI | 100 | 29 | - |
| Docs Harley/Timeline BBQ | Bonduel, WI | 100 | 12 | - |
| Whistling Straits Irish Course South Shelter Well | Kohler, WI | 100 | 0 | - |
| Sheboygan Broughton Marsh Park Lodge | Sheboygan, WI | 100 | 0 | - |
| Salem Plank Road United Church of Christ | Plymouth, WI | 100 | 27 | - |
| Hoefts Resort & Campground Shower Building Well | Cascade, WI | 100 | 0 | - |
| WI DNR Kmsfnu Greenbush Grp 1 | Madison, WI | 100 | 26 | - |
| WI DNR Kmsfnu Greenbush Handpump | Madison, WI | 100 | 20 | - |
| Joe Van Horn Chevrolet | Plymouth, WI | 100 | 104 | - |
| WI DNR Kohler Andrae Bath House | Madison, WI | 100 | 12 | - |
| WI DNR Kohler Andrae Camp Area | Madison, WI | 100 | 12 | - |
| WI DNR Kohler Andrae Nature Center | Madison, WI | 100 | 14 | - |
| Whistling Straits Champions Locker Room Well | Kohler, WI | 100 | 0 | - |
| Whistling Straits North Shelter Well | Kohler, WI | 100 | 15 | - |
| Whistling Straits South Shelter Well | Kohler, WI | 100 | 18 | - |
| WI DNR Kohler Andrae North Beach | Madison, WI | 100 | 11 | - |
| Glen Cairn Golf Course Clubhouse | Ogdensburg, WI | 100 | 23 | - |
| Bear Creek Travel Plaza | Appleton, WI | 100 | 25 | - |
| Health & Fitness Headquarters | Waupaca, WI | 100 | 0 | - |
| Little Silver Lake North | Wild Rose, WI | 100 | 9 | - |
| Fox River Valley Ethanol LLC | Stanley, WI | 100 | 102 | - |
| Bare Bones | Oshkosh, WI | 100 | 0 | - |
| Lejeune Steel Building 1 | Barronett, WI | 100 | 286 | - |
| Cedar Lake Market | Rice Lake, WI | 100 | 41 | - |
| Camp Phillips Boy Scout 8 Cub World | Eau Claire, WI | 100 | 1 | - |
| Source Energy Services Sumner West | Cameron, WI | 100 | 21 | - |
| Lejeune Steel Building 2 | Barronett, WI | 100 | 2 | - |
| Sleepy Hollow Campground LLC | Fountain City, WI | 100 | 0 | - |
| Waumandee Country Bar | Cochrane, WI | 100 | 0 | - |
| Valley Golf Club | Mondovi, WI | 100 | 16 | - |
| Lost Pirate Tiki Bar and Grill The | Holmen, WI | 100 | 14 | - |
| Kings Inn | New Auburn, WI | 100 | 10 | - |
| Pike Lake Resort | Cornell, WI | 100 | 16 | - |
| Loopys | Chippewa Falls, WI | 100 | 19 | - |
| Big Drywood Lutheran Church | Cadott, WI | 100 | 17 | - |
| Valley Tavern Supper Club | Bloomer, WI | 100 | 1 | - |
| View The | Chippewa Falls, WI | 100 | 47 | - |
| Club 40 | Colfax, WI | 100 | 0 | - |
| White Birch Cmpgd | Eau Claire, WI | 100 | 23 | - |
| Holcombe United Methodist Church | Holcombe, WI | 100 | 0 | - |
| St Johns Catholic Church | Bloomer, WI | 100 | 15 | - |
| Hmong Christian Church | Eau Claire, WI | 100 | 0 | - |
| Auburn Town Hall | New Auburn, WI | 100 | 0 | - |
| Anson Town Hall | Chippewa, WI | 100 | 0 | - |
| Lynn Dairy Inc | Granton, WI | 100 | 42 | - |