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 |
| Castle Rock Park 8 High Cap | Mauston, WI | 100 | 0 | - |
| WI DNR Buckhorn Beach | Madison, WI | 100 | 27 | - |
| WI DNR Buckhorn S Pic | Madison, WI | 100 | 42 | - |
| Edge O Dells Resort - Campground | Wisconsin Dells, WI | 100 | 8 | - |
| WI DNR Buckhorn Showers | Madison, WI | 100 | 20 | - |
| Shangri-La Cmpgd | Wisconsin Dells, WI | 100 | 4 | - |
| IN the Pines Cmpgd Well 3 | Lyndon Station, WI | 100 | 4 | - |
| Castle Rock Park Bathhouse | Mauston, WI | 100 | 0 | - |
| Castle Rock Lake Cmpgrd | Norway, WI | 100 | 8 | - |
| WI DNR Buckhorn Group Camp | Madison, WI | 100 | 55 | - |
| Edge O Dells Resort - Cmpgd Expansion & Pool | Wisconsin Dells, WI | 100 | 0 | - |
| Sbr Northwoods Retreat | White Lake, WI | 100 | 65 | - |
| St Marys Catholic Church Pickerel | Pickerel, WI | 100 | 0 | - |
| Nine Mile Allsport Resort | White Lake, WI | 100 | 5 | - |
| Walleye Lodge 1 Tavern | Pearson, WI | 100 | 23 | - |
| Walleye Lodge 2 Shower House | Pearson, WI | 100 | 12 | - |
| Remington Oil Antigo Truckstop | Antigo, WI | 100 | 17 | - |
| St Josephs Holy Family Church | Phlox, WI | 100 | 4 | - |
| River Forest Wolf River Campground Old Well | White Lake, WI | 100 | 22 | - |
| River Forest Wolf River Campground New Well | White Lake, WI | 100 | 30 | - |
| Riverview Country Club Proshop | Gleason, WI | 100 | 2 | - |
| Sure Wood Forest Bar & Grill | Tomahawk, WI | 100 | 39 | - |
| WI DNR Council Grnds Group Cmpgd | Merrill, WI | 100 | 13 | - |
| Shell True North 859 | Brecksville, WI | 100 | 0 | - |
| Trappe River Golf Club | Wausau, WI | 100 | 10 | - |
| Trails End Lodge | Wausau, WI | 100 | 4 | - |
| Lake Dubay Shores | Mosinee, WI | 100 | 46 | - |
| G S a Camp del O Claire | Weston, WI | 100 | 13 | - |
| Maple Grove Charter School | Athens, WI | 100 | 11 | - |
| Pine Valley Golf Course | Marathon, WI | 100 | 2 | - |
| Mission Evangelical | Merrill, WI | 100 | 12 | - |
| Steve & Dianes Memories Ballroom | Marathon, WI | 100 | 0 | - |
| Three Lakes Campground | Three Lakes, WI | 100 | 10 | - |
| Harmony Hills Mh Village | Plymouth, WI | 100 | 20 | - |
| Jailhouse Tavern | Rhinelander, WI | 100 | 7 | - |
| Boondocks The | Monico, WI | 100 | 9 | - |
| Norwood Pines Supper Club | Minocqua, WI | 100 | 14 | - |
| Patricia Lake Campground | Minocqua, WI | 100 | 4 | - |
| Birchwood Lodge Restaurant | Rhinelander, WI | 100 | 55 | - |
| Holiday Acres Cottages 19-31 | Rhinelander, WI | 100 | 8 | - |
| West Bay Cmpng Rsrt Sites 48-71 | Rhinelander, WI | 100 | 4 | - |
| West Bay Cmpng Rsrt Sites 1-47 | Rhinelander, WI | 100 | 21 | - |
| Indian Shores Lodge | Coconut Grove, WI | 100 | 0 | - |
| WI DOT Wayside 10 Monico | Madison, WI | 100 | 18 | - |
| Camp Menominee Lodge | Eagle River, WI | 100 | 16 | - |
| Towering Pines Central | Northfield, WI | 100 | 0 | - |
| Eagle Shores Tavern Well | Hazelhurst, WI | 100 | 22 | - |
| Minocqua Country Club Inc | Minocqua, WI | 100 | 0 | - |
| Rockys Roadhouse | Rhinelander, WI | 100 | 38 | - |
| Christians Campground | Pelican Lake, WI | 100 | 33 | - |