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 |
| Lake Hallie Sportsmans Club | Chippewa Falls, WI | 200 | 3 | - |
| Clark Co Russell Mem Park 1 | Neillsville, WI | 200 | 0 | - |
| Homesteader LLC The | Prairie du Chien, WI | 200 | 418 | - |
| Ec Co Altoona Beach | Altoona, WI | 200 | 0 | - |
| Ec Co Altoona Boat Landing | Altoona, WI | 200 | 0 | - |
| McDonalds Restaurant | Onalaska, WI | 200 | 1 | - |
| Menards Distribution Center Office | Eau Claire, WI | 200 | 99 | - |
| Jackson Co Lake Arbutus East 1 | Black River Falls, WI | 200 | 0 | - |
| Jackson Co Lake Arbutus East-Showerhouse | Black River Falls, WI | 200 | 12 | - |
| Melrose Mindoro Vocational School | Melrose, WI | 200 | 14 | - |
| Norwood Inn | La Crosse, WI | 200 | 19 | - |
| Maple Grove Venues | La Crosse, WI | 200 | 5 | - |
| Empire Screen Printing Clean Room | Onalaska, WI | 200 | 19 | - |
| Fort McCoy Range 34 | Fort McCoy, WI | 200 | 26 | - |
| Ambassador Baptist Church | Sparta, WI | 200 | 42 | - |
| Exile Bar | Plum City, WI | 200 | 30 | - |
| Captain Jacks Saloon | River Falls, WI | 200 | 3 | - |
| Plum City Perk | Plum City, WI | 200 | 0 | - |
| U S F S Franklin Lake E3 Intersection | Eagle River, WI | 200 | 9 | - |
| U S F S Franklin Lake E2 Pay Station | Eagle River, WI | 200 | 15 | - |
| Sportsmans Lodge | Pickerel, WI | 200 | 14 | - |
| Heritage Acres Hunt Club and Camp 5 Farm | Laona, WI | 200 | 19 | - |
| Campfire Bar and Grille | Pickerel, WI | 200 | 21 | - |
| U S F S Franklin Lake E31 Trlr LP | Eagle River, WI | 200 | 18 | - |
| Shangri-La Campground 1 | Wisconsin Dells, WI | 200 | 0 | - |
| Shangri-La Campground 2 | Wisconsin Dells, WI | 200 | 17 | - |
| Scouting America Gardner Dam Wolf Shower House | Appleton, WI | 200 | 4 | - |
| Crab N Jacks | White Lake, WI | 200 | 46 | - |
| Rocky Rips LLC | Waupun, WI | 200 | 13 | - |
| Mullins Cheese Factory | Mosinee, WI | 200 | 123 | - |
| White Stag Inn | Rhinelander, WI | 200 | 19 | - |
| WI DNR Buffalo Lk Cmpgd 18 | Boulder Junction, WI | 200 | 0 | - |
| WI DNR Clear Lk Pic 14 | Boulder Junction, WI | 200 | 5 | - |
| Holiday Acres Main | Rhinelander, WI | 200 | 10 | - |
| Grace Foursquare Church | Rhinelander, WI | 200 | 0 | - |
| Camp Kawaga 3 Field Bubbler | Minocqua, WI | 200 | 6 | - |
| Camp Kawaga 1 Bide a Wee | Minocqua, WI | 200 | 9 | - |
| West Bay Cmpng Rsrt Main Bldg | Rhinelander, WI | 200 | 4 | - |
| Camp Kawaga 7 Mess Hall | Minocqua, WI | 200 | 0 | - |
| Camp Kawaga 6 Porcupine | Minocqua, WI | 200 | 4 | - |
| Camp Kawaga 5 Crows Nest | Minocqua, WI | 200 | 0 | - |
| Honey Rock Camp Lower Plaza | Three Lakes, WI | 200 | 24 | - |
| Scouting America Camp Tesomas East Shower House | Weston, WI | 200 | 0 | - |
| Scouting America Camp Tesomas Senior Staff Housing | Weston, WI | 200 | 0 | - |
| Scouting America Camp Tesomas West Camper Shower House | Weston, WI | 200 | 0 | - |
| Three Lakes Town Market | Three Lakes, WI | 200 | 0 | - |
| Peace Lutheran Church | Woodruff, WI | 200 | 0 | - |
| Dillmans Bay Resort 1 Main Lodge | Lac du Flambeau, WI | 200 | 15 | - |
| Asana Suka | Land O Lakes, WI | 200 | 6 | - |
| Spangs Italian Restaurant | St. Germain, WI | 200 | 12 | - |