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 |
| Trempealeau Mountain Golf Club | Trempealeau, WI | 25 | 1 | - |
| Reaching Out Ministries Inc | Whitehall, WI | 25 | 18 | - |
| Osseo Junior Baseball & Softball Park | Osseo, WI | 25 | 10 | - |
| Centerville Community Center | Galesville, WI | 25 | 9 | - |
| Tenba Ridge Winery | Blair, WI | 25 | 0 | - |
| Alcivia | Cottage Grove, WI | 25 | 0 | - |
| Champions Riverside 5 East Side Cmpgd | Ettrick, WI | 25 | 0 | - |
| Champions Riverside 6 North Cabins & Pond | Ettrick, WI | 25 | 0 | - |
| Davids Ice Cream | Dodge, WI | 25 | 0 | - |
| Trail Ridge Ranch - Pumphouse | Milwaukee, WI | 25 | 5 | - |
| Kickapoo Valley Reserve | La Farge, WI | 25 | 8 | - |
| Kickapoo Lutheran Church | Soldiers Grove, WI | 25 | 0 | - |
| Franklin Lutheran Church | Viroqua, WI | 25 | 0 | - |
| Sugar Grove Church of Christ | Soldiers Grove, WI | 25 | 10 | - |
| Retreat Community Sportsmans Club | DE Soto, WI | 25 | 28 | - |
| Living Waters Bible Cp Maint Well | Westby, WI | 25 | 0 | - |
| Ohenrys Cmpgd Lower Well | Genoa, WI | 25 | 13 | - |
| Vernon Co Sidie Hollow Pk-Boat Lndg | Viroqua, WI | 25 | 16 | - |
| Vernon Co Sidie Hollow Pk Office Lwr Cpgd | Viroqua, WI | 25 | 18 | - |
| Vernon Co Sidie Hollow Pk-Upper Cmpgrd | Viroqua, WI | 25 | 19 | - |
| Vernon Co Wayside Park | Viroqua, WI | 25 | 4 | - |
| Liberty Bar | Viola, WI | 25 | 5 | - |
| Viroqua Country Club | Viroqua, WI | 25 | 10 | - |
| Vernon Co Battle Island Concession Stand | Viroqua, WI | 25 | 18 | - |
| Pineland Camping Park 5 Site 43 | Arkdale, WI | 25 | 20 | - |
| Ponderosa Pines | Stevens Point, WI | 25 | 6 | - |
| Northern Bay Office Island View Pro Shop | Arkdale, WI | 25 | 0 | - |
| Sunset Condominiums - Swimming Pool Bld | Arkdale, WI | 25 | 0 | - |
| Michaels Landing - Campground | Friendship, WI | 25 | 0 | - |
| Ponderosa Pines - Campground 1 | Stevens Point, WI | 25 | 8 | - |
| Federal Correctional Institution - Training Ctr | Oxford, WI | 25 | 15 | - |
| Dells Camping Resort 1 | Wisconsin Dells, WI | 25 | 6 | - |
| Dells Camping Resort 2 | Wisconsin Dells, WI | 25 | 10 | - |
| Witches Gulch | Wisconsin Dells, WI | 25 | 11 | - |
| Dells Christian Cmpgd | Omro, WI | 25 | 0 | - |
| Patrick Lake Co Park 1 | Friendship, WI | 25 | 25 | - |
| Hiawatha Motel | Friendship, WI | 25 | 6 | - |
| Camp Lake Mason 2 | Linconwood, WI | 25 | 19 | - |
| Camp Lake Mason 1 | Linconwood, WI | 25 | 10 | - |
| Grand Marsh Community Center | Grand Marsh, WI | 25 | 1 | - |
| White Creek Tavern | Wisconsin Dells, WI | 25 | 8 | - |
| Michaels Landing - Bar | Friendship, WI | 25 | 16 | - |
| Akorn Inn | Friendship, WI | 25 | 22 | - |
| Castle Rock Co Park 8 Shower | Friendship, WI | 25 | 12 | - |
| Castle Rock Lake Motel 2 | Friendship, WI | 25 | 9 | - |
| Castle Rock Lake Motel 3 | Friendship, WI | 25 | 16 | - |
| Lake Sherwood Lodge | Nekoosa, WI | 25 | 4 | - |
| Vans Red Neck Saloon | Oxford, WI | 25 | 7 | - |
| Irrigation Station | Oxford, WI | 25 | 23 | - |
| Camp Deep Lake Cmpgd | Linconwood, WI | 25 | 0 | - |