Public Water Systems
10,988 active water systems in WI.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| SHERWOOD WATERWORKS | SHERWOOD, WI | 3,114 | 150 | — |
| OOSTBURG WATERWORKS | OOSTBURG, WI | 3,110 | 13 | — |
| LAKE COMO SANITARY DIST 1 | LAKE GENEVA, WI | 3,038 | 97 | — |
| HORTONVILLE WATER UTILITY | HORTONVILLE, WI | 3,028 | 54 | — |
| NEW HOLSTEIN WATERWORKS | NEW HOLSTEIN, WI | 3,012 | 52 | — |
| WOODSIDE SPORTS COMPLEX | MAUSTON, WI | 3,008 | 8 | — |
| WI DOT REST AREA 22 TURTLE | MADISON, WI | 3,005 | 34 | — |
| WI DOT REST AREA 13 AZTALAN | MADISON, WI | 3,004 | 72 | — |
| PARK FALLS WATERWORKS | PARK FALLS, WI | 2,993 | 247 | — |
| AMERY WATERWORKS | AMERY, WI | 2,962 | 36 | — |
| LAKE DELTON WATERWORKS | LAKE DELTON, WI | 2,914 | 14 | — |
| OCONTO FALLS WATERWORKS | OCONTO FALLS, WI | 2,892 | 21 | — |
| SOMERSET WATERWORKS | SOMERSET, WI | 2,854 | 44 | — |
| KEWAUNEE WATERWORKS | KEWAUNEE, WI | 2,848 | 137 | — |
| MENDOTA MENTAL HEALTH INST | MADISON, WI | 2,787 | 17 | — |
| ROME WATER UTILITY | NEKOOSA, WI | 2,775 | 10 | — |
| GENOA CITY WATERWORKS | GENOA CITY, WI | 2,766 | 248 | — |
| LUXEMBURG WATERWORKS | LUXEMBURG, WI | 2,737 | 12 | — |
| BELLEVILLE WATERWORKS | BELLEVILLE, WI | 2,712 | 12 | — |
| LOMIRA WATERWORKS | LOMIRA, WI | 2,701 | 188 | — |
| BROCKWAY SANITARY DIST 1 | Black River Falls, WI | 2,692 | 31 | — |
| DENMARK WATERWORKS | DENMARK, WI | 2,684 | 30 | Clean |
| OSCEOLA WATERWORKS | OSCEOLA, WI | 2,680 | 57 | — |
| MONDOVI WATERWORKS | MONDOVI, WI | 2,667 | 30 | — |
| SPOONER WATERWORKS | SPOONER, WI | 2,653 | 79 | — |
| JUNEAU WATERWORKS | JUNEAU, WI | 2,627 | 45 | — |
| WILLIAMS BAY WATERWORKS | WILLIAMS BAY, WI | 2,601 | 135 | — |
| HAYWARD WATER UTILITY | Hayward, WI | 2,552 | 72 | — |
| NEW LISBON WATERWORKS | NEW LISBON, WI | 2,526 | 135 | — |
| POYNETTE WATERWORKS | POYNETTE, WI | 2,520 | 74 | — |
| DEERFIELD WATERWORKS | DEERFIELD, WI | 2,510 | 45 | — |
| FENNIMORE WATERWORKS | FENNIMORE, WI | 2,507 | 43 | — |
| WI DOT REST AREA 11 DEKORRA EAST BOUND | MADISON, WI | 2,505 | 64 | — |
| WI DOT REST AREA 17 MILTON | MADISON, WI | 2,503 | 23 | — |
| WINNECONNE WATERWORKS | WINNECONNE, WI | 2,502 | 169 | — |
| ABBOTSFORD WATERWORKS | ABBOTSFORD, WI | 2,502 | 121 | — |
| BELGIUM WATERWORKS | BELGIUM, WI | 2,493 | 54 | — |
| MINERAL POINT WATERWORKS | MINERAL POINT, WI | 2,487 | 93 | — |
| WESTBY WATERWORKS | WESTBY, WI | 2,400 | 13 | — |
| NEKOOSA WATERWORKS | Nekoosa, WI | 2,394 | 25 | — |
| NEILLSVILLE WATERWORKS | Neillsville, WI | 2,384 | 18 | — |
| LAKELAND SANITARY DIST 1 | Minocqua, WI | 2,381 | 20 | — |
| DOUSMAN WATER UTILITY | Dousman, WI | 2,350 | 129 | — |
| NEW GLARUS WATERWORKS | NEW GLARUS, WI | 2,348 | 132 | — |
| CUMBERLAND WATERWORKS | CUMBERLAND, WI | 2,311 | 43 | — |
| WALWORTH WATERWORKS | WALWORTH, WI | 2,304 | 69 | — |
| WAUTOMA WATER DEPT | WAUTOMA, WI | 2,280 | 49 | — |
| WASHBURN WATERWORKS | WASHBURN, WI | 2,280 | 44 | — |
| FREDONIA WATERWORKS | FREDONIA, WI | 2,279 | 35 | — |
| KOHLER WATERWORKS | KOHLER, WI | 2,271 | 46 | — |