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 |
| WI Lions Camp Memorial Building | Rosholt, WI | 75 | 7 | - |
| WI Lions Camp 4 Rec Shelter | Rosholt, WI | 75 | 6 | - |
| Bison Transport USA | Amherst, WI | 75 | 65 | - |
| Pine Grove Villa | Stevens Point, WI | 75 | 285 | - |
| St Germain Golf Club on Course | St Germain, WI | 75 | 0 | - |
| Baltic Rentals LLC | Marshfield, WI | 75 | 41 | - |
| Woodland Camp Cabin Well | Northfield, WI | 75 | 0 | - |
| Woodland Camp Lodge Well | Northfield, WI | 75 | 0 | - |
| WI DNR Hwy M & N Bike Trail | Boulder Junction, WI | 75 | 18 | - |
| Lighthouse Resort Lodge | Minocqua, WI | 75 | 25 | - |
| St Germain Golf Club Concessions | St Germain, WI | 75 | 16 | - |
| Red Crown Ldg Meeting Hall | Arbor Vitae, WI | 75 | 2 | - |
| Aberdeen Restaurant and Bar | Manitowish Waters, WI | 75 | 12 | - |
| Branding Iron, The | Nekoosa, WI | 75 | 5 | - |
| Fast Lane Bar & Grill | Nekoosa, WI | 75 | 16 | - |
| St Johns Ev Lutheran Church | Wisconsin Rapids, WI | 75 | 5 | - |
| Good Thyme | Washburn, WI | 75 | 0 | - |
| St Peter and Paul Catholic Church | Ashland, WI | 75 | 0 | - |
| Sacred Hearts Church | Webster, WI | 75 | 15 | - |
| Yellow Lake Lutheran Church | Webster, WI | 75 | 16 | - |
| Jo Mamas a and H Corner Cafe | Spooner, WI | 75 | 24 | - |
| Salty Steer | Danbury, WI | 75 | 7 | - |
| Sweenys Bar | Webster, WI | 75 | 8 | - |
| Lakeside Community Lutheran Church | Webster, WI | 75 | 9 | - |
| Bear Chasers Lodge Bar & Grill | Hurley, WI | 75 | 0 | - |
| First Lutheran Church | Ogema, WI | 75 | 14 | - |
| Bethany Lutheran Church | Catawba, WI | 75 | 16 | - |
| Ladysmith Service Center | Ladysmith, WI | 75 | 5 | - |
| Flambeau Forest Condo Assn | Orfordville, WI | 75 | 41 | - |
| Christinas Y Pine Tavern | Hayward, WI | 75 | 41 | - |
| Chief Lake Lodge | Zumbrota, WI | 75 | 13 | - |
| Northland Lodge | Hayward, WI | 75 | 0 | - |
| Our Lady Perpetual Help Cath | Medford, WI | 75 | 11 | - |
| St Johns Lutheran Church | Ixonia, WI | 74 | 0 | - |
| Vetesnik Power Sports | Richland Center, WI | 74 | 23 | - |
| Ozaukee Skateland | Cedarburg, WI | 74 | 0 | - |
| Regency Club Condominiums | Muskego, WI | 74 | 100 | - |
| Southern Lakes Evangelical Free Church | Elkhorn, WI | 74 | 0 | - |
| Chalet Shopping Center | Hubertus, WI | 74 | 0 | - |
| Richfield Fire Station 1 | Hubertus, WI | 74 | 0 | - |
| Zahn Farms | Gillett, WI | 74 | 0 | - |
| Howards Grove Chiropractic | Howards Grove, WI | 74 | 0 | - |
| Cushing Community Center | Saint Croix Falls, WI | 74 | 21 | - |
| Casserly Properties | Ixonia, WI | 73 | 2 | - |
| Ozaukee Christian School | West Bend, WI | 73 | 4 | - |
| Wholly Cow Frozen Custard | Delafield, WI | 73 | 5 | - |
| Dillmans Bay Resort 2 Northshore | Lac du Flambeau, WI | 73 | 26 | - |
| Equity Coop Livestock Sales Assn | Monroe, WI | 72 | 6 | - |
| Mid-State Equipment Sauk Prairie | Prairie Du Sac, WI | 72 | 5 | - |
| North Shore Preschool & Child Care | Mequon, WI | 72 | 9 | - |