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 |
| St Croix Co Loop Crossing Trailhead | Hudson, WI | 30 | 0 | - |
| Eau Galle Prairie Loop Cmpgd | Spring Valley, WI | 30 | 0 | - |
| Grace Lutheran Church | Whitehall, WI | 30 | 39 | - |
| Four Corners | Trempealeau, WI | 30 | 32 | - |
| Beedles Bar & Grill | Galesville, WI | 30 | 0 | - |
| Elk Creek Lutheran Church | Osseo, WI | 30 | 24 | - |
| Backroads Pub & Grill LLC | Cochrane, WI | 30 | 49 | - |
| Emmanuel Alliance Church | Onalaska, WI | 30 | 8 | - |
| Township Bowl | Hillsboro, WI | 30 | 5 | - |
| Hickory Hill Motel | Viroqua, WI | 30 | 21 | - |
| Vang Lutheran Church | Westby, WI | 30 | 20 | - |
| Vernon Co 5 Rentz Memorial Pk - Esofea | Viroqua, WI | 30 | 23 | - |
| Redmound Country Store | Desoto, WI | 30 | 0 | - |
| Genoa National Fish Hatchery Interpretive Center | Genoa, WI | 30 | 4 | - |
| Club 23 Inc | WI Dells, WI | 30 | 0 | - |
| Lakes Inn 1 The | Nekoosa, WI | 30 | 8 | - |
| Dyracuse Recreational Area | Nekoosa, WI | 30 | 4 | - |
| Sunset Condominiums - Condo 7 | Arkdale, WI | 30 | 0 | - |
| Sunset Condominiums - Condo 28 | Arkdale, WI | 30 | 0 | - |
| Pine Grove Pub | Kaukauna, WI | 30 | 11 | - |
| Hiles Pine Lake Cmpgd on Hill | Hiles, WI | 30 | 8 | - |
| Hiles Pine Lake Cmpgd Lakeside | Hiles, WI | 30 | 8 | - |
| Hiles Pine Lake Cmpgd Bottom Back Row | Hiles, WI | 30 | 7 | - |
| Hiles Pine Lake Cmpgd Showers | Hiles, WI | 30 | 4 | - |
| Wild Rose Pub & Eatery | Wabeno, WI | 30 | 19 | - |
| Metonga Shores 4 | Luxumburg, WI | 30 | 0 | - |
| Pine Grove Resort | Kaukauna, WI | 30 | 5 | - |
| Metonga Shores 1 | Luxumburg, WI | 30 | 0 | - |
| Metonga Shores 2 | Luxumburg, WI | 30 | 0 | - |
| Buckhorn Bar & Grill | Necedah, WI | 30 | 15 | - |
| Rock Camping Resort - Campground, The | Wisconsin Dells, WI | 30 | 10 | - |
| Maple Bear Campground Bar and Grill | Tomahawk, WI | 30 | 40 | - |
| Muskie River Lodge | Tomahawk, WI | 30 | 9 | - |
| Jebs Bar and Grill | Irma, WI | 30 | 68 | - |
| Winding Trail Bar and Grill | Irma, WI | 30 | 19 | - |
| Rpes Rivers Edge | Tomahawk, WI | 30 | 17 | - |
| 2Yk LLC | Antigo, WI | 30 | 98 | - |
| St Patricks Catholic Church | Mosinee, WI | 30 | 4 | - |
| Balz Inn | Athens, WI | 30 | 10 | - |
| Mayflower Lake Resort | Birnamwood, WI | 30 | 0 | - |
| County Materials Corporation | Marathon, WI | 30 | 18 | - |
| Rays Market | Abbotsford, WI | 30 | 19 | - |
| Auntie Tayas | Wausau, WI | 30 | 0 | - |
| Moen Lake Campground and Resort Area 2 | Rhinelander, WI | 30 | 0 | - |
| 4 Pole Joes | Pelican Lake, WI | 30 | 33 | - |
| Birch Lake Bar | Harshaw, WI | 30 | 5 | - |
| Neighbors Hood Northwoods Resort | Elkhorn, WI | 30 | 20 | - |
| Lake Terrace Estates East | Three Lakes, WI | 30 | 0 | - |
| Oneida Co Enterprise Cpgd 2 West Well | Rhinelander, WI | 30 | 5 | - |
| Oneida Co Enterprise Cpgd 1 East Well | Rhinelander, WI | 30 | 15 | - |