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 |
| Island Lake Campground | New Auburn, WI | 60 | 0 | - |
| Winterhaven 1 Hill Well | Ladysmith, WI | 60 | 3 | - |
| Church of Jehovah Witness | Hayward, WI | 60 | 0 | - |
| Bear Paw Resort Cabins | Birchwood, WI | 60 | 3 | - |
| North Star Camp for Boys Senior Village | Hayward, WI | 60 | 24 | - |
| Whitetail Ridge SW Campground and Saloon | Sarona, WI | 60 | 22 | - |
| Stresau Lab | Spooner, WI | 60 | 13 | - |
| Red Barn Camping Maintenance | Merrimac, WI | 60 | 0 | - |
| Tomahawk Scout Res Chippewa Dining | Birchwood, WI | 60 | 27 | - |
| Edelweiss Chalet Country Club | New Glarus, WI | 59 | 7 | - |
| Wywood Community Inc | Twin Lakes, WI | 59 | 362 | - |
| St Benedicts Abbey | Benet Lake, WI | 59 | 182 | - |
| Alleluia Lutheran Ch | Greenleaf, WI | 59 | 0 | - |
| Pine Grove Motel | Ephraim, WI | 59 | 63 | - |
| Laclare Family Creamery | Malone, WI | 59 | 12 | - |
| National Exchange Bank | Kingston, WI | 59 | 1 | - |
| Witt Family Ford | Pulaski, WI | 59 | 0 | - |
| Van Horn Nissan - Volkswagen - Hyundai | Plymouth, WI | 59 | 0 | - |
| Great Lakes Veterinary Clinic | Neenah, WI | 59 | 0 | - |
| Dollar General #24742 | Goodlettsville, WI | 59 | 0 | - |
| Whippoorwill Tavern | Waunakee, WI | 58 | 0 | - |
| Fenmore Hills Motel & Apartments | Fennimore, WI | 58 | 12 | - |
| Traders Bar & Grill | Arena, WI | 58 | 53 | - |
| Oak Ridge Mobile Com 3 | Farmington Hills, WI | 58 | 6 | - |
| Darlington Golf and Country Club | Darlington, WI | 58 | 13 | - |
| Swiss Street Pub & Grill | Franklin, WI | 58 | 63 | - |
| Riveredge Nature Center | Newburg, WI | 58 | 0 | - |
| Stones Throw Winery | Egg Harbor, WI | 58 | 8 | - |
| Thyme Restaurant | Sister Bay, WI | 58 | 0 | - |
| Chives Door Co | Suamico, WI | 58 | 97 | - |
| Water Street Inn | Ephraim, WI | 58 | 47 | - |
| Washington Island Recreation Ctr | Washington Island, WI | 58 | 83 | - |
| Northwoods Tavern | Hayward, WI | 58 | 24 | - |
| Murphys Bar & Restaurant | Madison, WI | 57 | 0 | - |
| Kelsch Machine Corp | Belleville, WI | 57 | 6 | - |
| Rawson Pub | Franklin, WI | 57 | 26 | - |
| Hawthorne Hills Co Pk Club Hse | Port Washington, WI | 57 | 0 | - |
| Timber Lee Chris Ctr Ponderosa Pines | East Troy, WI | 57 | 0 | - |
| WI DNR Pike Lake Hdqtrs | Madison, WI | 57 | 37 | - |
| Shops of Elm Grove | Elm Grove, WI | 57 | 3 | - |
| At&t Saylesville | Dallas, WI | 57 | 6 | - |
| Hallett Veterinary Hospital | Oconomowoc, WI | 57 | 0 | - |
| Buechel Stone Cmf | Chilton, WI | 57 | 18 | - |
| K K Fiske Restaurant | Washington Island, WI | 57 | 90 | - |
| Rivers End Resort - Old Well | Markesan, WI | 57 | 25 | - |
| West Immanuel New Well | Osceola, WI | 57 | 0 | - |
| Habit Bar & Grill The | Nelma, WI | 57 | 4 | - |
| St Germain Dollar General | Goodlettsville, WI | 57 | 0 | - |
| Concor Tool and Machine Inc | Hayward, WI | 57 | 103 | Detected |
| Dodge County Humane Society | Juneau, WI | 56 | 5 | - |