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 |
|---|---|---|---|---|
| Ithaca Public School K-12 | Richland Center, WI | 700 | 4 | - |
| Durham Meadows Water Trust | Muskego, WI | 700 | 3 | - |
| Olin-Sang-Ruby Union Institute - Dining Hall | Oconomowoc, WI | 700 | 29 | - |
| Birch Terrace Mobile Home Community | Farmington Hills, WI | 700 | 14 | - |
| Brookwood High School | Ontario, WI | 700 | 8 | - |
| Northwoods Inn | Pickerel, WI | 700 | 14 | - |
| Holy Rosary Catholic Church | Wisconsin Rapids, WI | 700 | 24 | - |
| Ridgeway Waterworks | Ridgeway, WI | 690 | 245 | - |
| Bloomington Waterworks | Bloomington, WI | 682 | 23 | Clean |
| Viola Waterworks | Viola, WI | 667 | 74 | - |
| Rolling Hills Elementary Schl | Mukwonago, WI | 666 | 8 | - |
| Wheatland Center School | Burlington, WI | 665 | 30 | - |
| WI DNR Lake Wissota B Bldg | Madison, WI | 665 | 11 | - |
| WI DNR Lake Wissota Shop | Madison, WI | 665 | 25 | - |
| WI DNR Lake Wissota Welcome Center | Madison, WI | 665 | 0 | - |
| Livingston Waterworks | Livingston, WI | 664 | 119 | - |
| Lake Mills Travel Plaza | Avon, WI | 662 | 6 | - |
| Madison Country Day School | Waunakee, WI | 660 | 193 | - |
| Prentice Waterworks | Prentice, WI | 660 | 137 | - |
| Randall School | Burlington, WI | 658 | 25 | - |
| Hobart Waterworks S a 3 | Hobart, WI | 658 | 20 | - |
| Racine Bible Church | Sturtevant, WI | 657 | 0 | - |
| Waukesha Bible Church | Waukesha, WI | 654 | 0 | - |
| Norwalk Waterworks | Norwalk, WI | 653 | 32 | - |
| Rose Glen Elementary | Waukesha, WI | 652 | 50 | - |
| Webster Waterworks | Webster, WI | 652 | 57 | - |
| Rock River Leisure Estates Coop | Edgerton, WI | 650 | 24 | - |
| Greenleaf Waterworks | Greenleaf, WI | 650 | 44 | - |
| Stockbridge Waterworks | Stockbridge, WI | 650 | 5 | - |
| WI DOT Rest Area 31 & Info Center Lacrosse | Madison, WI | 650 | 12 | - |
| Scouting America Camp Mkjw East Camp 1 | Pearson, WI | 650 | 0 | - |
| Minocqua Hazelhurst Elem Sch | Minocqua, WI | 650 | 30 | - |
| Rockland Waterworks | Rockland, WI | 642 | 38 | - |
| Amer Baptist Assem Main | Green Lake, WI | 640 | 81 | - |
| Camp Douglas Waterworks | Camp Douglas, WI | 640 | 45 | - |
| Avoca Waterworks | Avoca, WI | 637 | 88 | - |
| Dayspring Baptist Church Inc | Pewaukee, WI | 636 | 0 | - |
| Cochrane Fountain City School | Fountain City, WI | 635 | 16 | - |
| Eleva Waterworks | Eleva, WI | 635 | 360 | - |
| Brownsville Waterworks | Browsville, WI | 630 | 42 | - |
| Gibraltar High School | Fish Creek, WI | 628 | 101 | - |
| Lake Country School | Hartford, WI | 623 | 110 | - |
| Calvary Community Church Original Bldg 1972 | Williams Bay, WI | 620 | 9 | - |
| Laconia High School and Middle School | Rosendale, WI | 620 | 40 | - |
| Bruce Waterworks | Bruce, WI | 620 | 85 | - |
| Bluemkes Bp | Rosendale, WI | 616 | 10 | - |
| WI DNR Devils Lake Quartzite Campground | Baraboo, WI | 615 | 0 | - |
| Mequon Trail Townhomes | Mequon, WI | 615 | 37 | - |
| Kinney Lake Cmpgd Site 701 | Stevens Point, WI | 615 | 11 | - |
| Olivia Telschow LLC | Edgar, WI | 612 | 0 | - |