All water systems in Wisconsin
9,089 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
WI Dnr Clear LK Cmpgd Shower Woodruff · Oneida County |
300 | 0 | 0 | |
|
WI Dnr Crystal Muskie Con Sta Boulder Jct · Vilas County |
300 | 0 | 0 | |
|
WI Dnr Firefly Lake Campground Shower Boulder Jct · Vilas County |
300 | 0 | 0 | |
|
WI Dnr Glacial Drumlin Trail Wales Rest Area Delafield · Waukesha County |
300 | 2 | 1 | |
|
WI Dnr Willow River Pic Hudson · St. Croix County |
300 | 0 | 0 | |
|
WI Historical Stonefield AG Museum Cassville · Grant County |
300 | 2 | 1 | |
|
Wildwood Wildlife Park Minocqua · Oneida County |
300 | 0 | 0 | |
|
Wildwood Wildlife Park Jambo Hut Minocqua · Oneida County |
300 | 0 | 0 | |
|
ST Anthony on the Lake Church Pewaukee · Waukesha County |
294 | 0 | 0 | |
|
Score Franksville · Racine County |
286 | 0 | 0 | |
|
WI Dnr Yellowstone Campground Blanchardville · Lafayette County |
285 | 0 | 0 | |
|
WI Dnr Yellowstone New Shower Building Blanchardville · Lafayette County |
285 | 0 | 0 | |
|
Pines Event Center the Rhinelander · Oneida County |
280 | 0 | 0 | |
|
Good Shepherd by the Lake Lutheran Church Stoughton · Dane County |
276 | 0 | 0 | |
|
Camp Ojibwa 1 Eagle River · Vilas County |
275 | 0 | 0 | |
|
Camp Ojibwa 2 Eagle River · Vilas County |
275 | 0 | 0 | |
|
Friends of Hunt Hill Audubon Sanctuary Main Camp Sarona · Washburn County |
275 | 0 | 0 | |
|
Immanuel Lutheran CH Westfield · Marquette County |
275 | 0 | 0 | |
|
Sky Harbour Center Lacrosse · La Crosse County |
275 | 0 | 0 | |
|
Club Ten Durand · Pepin County |
270 | 0 | 0 | |
|
The Fields of Clover Hill Golf Course Lomira · Dodge County |
270 | 0 | 0 | |
|
Culvers Town & Country C Store Sturgeon Bay · Door County |
265 | 1 | 1 | |
|
Dancing Horses Game Room Delavan · Walworth County |
265 | 0 | 0 | |
|
Dancing Horses Stage Barn Delavan · Walworth County |
265 | 0 | 0 | |
|
WI Dnr Blue Mound Aquatic Center Blue Mounds · Iowa County |
265 | 0 | 0 | |
|
Peace Lutheran Church New Berlin · Waukesha County |
262 | 0 | 0 | |
|
Adams Lutheran Church Argyle · Green County |
260 | 0 | 0 | |
|
Marshfield Clinic Woodruff Center Woodruff · Oneida County |
260 | 0 | 0 | |
|
North Bristol Sportsman Club Sun Prairie · Dane County |
260 | 0 | 0 | |
|
Westbury Bank Germantown · Washington County |
260 | 1 | 1 | |
|
Willow Haven Hazelhurst · Oneida County |
260 | 0 | 0 | |
|
ST Andrew Lutheran Church West Bend · Washington County |
259 | 0 | 0 | |
|
Camp Jcc Pool & Lodge Fredonia · Ozaukee County |
258 | 0 | 0 | |
|
ST Martin of Tours Cong Franklin · Milwaukee County |
258 | 0 | 0 | |
|
North Shore Chophouse Fort Atkinson · Jefferson County |
257 | 0 | 0 | |
|
Immanuel Lutheran Church Watertown · Dodge County |
256 | 0 | 0 | |
|
Yogi Bears Jellystone Park #1 Comfort Station Wisconsin Dells · Sauk County |
256 | 0 | 0 | |
|
Yogi Bears Jellystone Park #2 Comfort Station Wisconsin Dells · Sauk County |
256 | 1 | 1 | |
|
Yogi Bears Jellystone Park #3 Comfort Station Wisconsin Dells · Sauk County |
256 | 0 | 0 | |
|
Gieses Country Market Van Dyne · Fond du Lac County |
255 | 0 | 0 | |
|
Rio Lobo LLC Weyauwega · Waupaca County |
255 | 0 | 0 | |
|
WI Dells KOA Campground Lower Well Wisconsin Dells · Sauk County |
255 | 0 | 0 | |
|
WI Dells KOA Campground Upper Well Wisconsin Dells · Sauk County |
255 | 0 | 0 | |
|
WI Dnr Devils Lake South Shore Shelter Baraboo · Sauk County |
255 | 0 | 0 | |
|
Newville Travel Centersubway Edgerton · Rock County |
254 | 0 | 0 | |
|
Red Cabin at Green Acres Fond Du Lac · Fond du Lac County |
254 | 2 | 0 | |
|
ST Lawrence Church Hartford · Washington County |
254 | 0 | 0 | |
|
Stoney Acres Athens · Marathon County |
254 | 0 | 0 | |
|
WI Dnr Wyalusing Visitors Station Bagley · Grant County |
254 | 1 | 0 | |
|
Antigo Bass Lake Country Club Deerbrook · Langlade County |
253 | 1 | 1 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wisconsin records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.