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 |
|---|---|---|---|---|
| Montreal Waterworks | Montreal, WI | 887 | 766 | - |
| Mill Creek Academy | Grand Rapids, WI | 886 | 2 | - |
| WI DOT Rest Area 106 Jamestown | Madison, WI | 880 | 60 | - |
| Biron Water Utility | Wisconsin Rapids, WI | 879 | 38 | - |
| Arena Waterworks | Arena, WI | 877 | 34 | Clean |
| Millgate General Store | Rochester, WI | 875 | 0 | - |
| Generac Power Systems Inc | Waukesha, WI | 875 | 8 | - |
| Brandon Waterworks | Brandon, WI | 872 | 35 | - |
| T&s Buss Inc | Sullivan, WI | 864 | 0 | - |
| Allenton Sanitary District | Allenton, WI | 860 | 47 | - |
| St Andrew Lutheran Church & Westside Christian School | Middleton, WI | 850 | 169 | - |
| Hillcrest Estates MHP | San Francisco, WI | 850 | 46 | - |
| McDonalds Restaurant Poynette | Poynette, WI | 845 | 237 | - |
| Necedah Waterworks | Necedah, WI | 844 | 42 | - |
| Highland Waterworks | Highland, WI | 842 | 28 | - |
| Dorchester Waterworks | Dorchester, WI | 834 | 4 | - |
| Birnamwood Waterworks | Birnamwood, WI | 832 | 59 | - |
| Lake Denoon Middle School | Muskego, WI | 825 | 35 | - |
| Arlington Waterworks | Arlington, WI | 823 | 50 | - |
| Argyle Waterworks | Argyle, WI | 823 | 16 | - |
| Discalced Carmelites & Holy Hill Cafe | Hubertus, WI | 823 | 12 | - |
| American Players Theatre -Gateway | Spring Green, WI | 821 | 6 | - |
| Burger King | Downers Grove, WI | 820 | 38 | - |
| Kwik Trip | Cedarburg, WI | 817 | 0 | - |
| Footville Waterworks | Footville, WI | 816 | 37 | - |
| Pepin Waterworks | Pepin, WI | 816 | 70 | - |
| Celebrations on the River | La Crosse, WI | 815 | 5 | - |
| American Players Theatre Patron | Spring Green, WI | 810 | 0 | - |
| Blanchardville Waterworks | Blanchardville, WI | 810 | 82 | - |
| Northpoint Plaza Bp | Poynette, WI | 809 | 8 | - |
| Pioneer Plaza | Richfield, WI | 808 | 1 | - |
| Concord General Store | Oconomowoc, WI | 807 | 4 | - |
| Westport Water Utility | Waunakee, WI | 800 | 17 | - |
| Salem Grade School North Well | Salem, WI | 800 | 262 | - |
| WI DOT Rest Area 36 Lafayette | Madison, WI | 800 | 9 | - |
| WI DOT Rest Area 35 Lafayette | Madison, WI | 800 | 1 | - |
| Bateman Express Mart | Chippewa Falls, WI | 800 | 6 | - |
| Melrose Mindoro United Campus | Melrose, WI | 800 | 133 | - |
| WI DNR Willow River Cmpgd - 300 | Madison, WI | 800 | 0 | - |
| Holy Family Catholic Church | Edgar, WI | 800 | 0 | - |
| Pittsville Waterworks | Pittsville, WI | 800 | 147 | - |
| Elmwood Waterworks | Elmwood, WI | 798 | 77 | - |
| WI DNR Gov Nelson 3 Office & Shop | Waunakee, WI | 795 | 25 | - |
| Stoddard Waterworks | Stoddard, WI | 793 | 148 | - |
| Plain Waterworks | Plain, WI | 792 | 19 | - |
| Friendship Waterworks | Friendship, WI | 781 | 42 | - |
| WI Heights High School | Mazomanie, WI | 780 | 14 | - |
| Cassville Waterworks | Cassville, WI | 777 | 13 | - |
| Alma Waterworks | Alma, WI | 769 | 39 | - |
| Wyocena Waterworks | Wyocena, WI | 768 | 16 | - |