All water systems in Wisconsin
11,026 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
ST Paul the Apostle Catholic Church Catawba · Price County |
300 | 0 | 0 | |
|
Stetsonville EL School Stetsonville · Taylor County |
300 | 1 | 0 | |
|
Sunnyfield Acres Oconomowoc · Waukesha County |
300 | 0 | 0 | |
|
Sunrise Lodge Restaurant Land O Lakes · Vilas County |
300 | 0 | 0 | |
|
Turner Hall Fredonia · Washington County |
300 | 0 | 0 | |
|
Westchester Lakes Subdivision Mequon · Ozaukee County |
300 | 0 | 0 | |
|
Westshire Farms at the Lakes Delavan · Walworth County |
300 | 0 | 0 | |
|
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 | |
|
Caravilla Education and Rehab Center Janesville · Rock County |
298 | 4 | 2 | |
|
Elm Grove Village Hall Elm Grove · Waukesha County |
294 | 0 | 0 | |
|
ST Anthony on the Lake Church Pewaukee · Waukesha County |
294 | 0 | 0 | |
|
Beecher-Dunbar-Pembine School Pembine · Marinette County |
292 | 0 | 0 | |
|
Rock Springs Waterworks Rock Springs · Sauk County |
292 | 1 | 0 | |
|
Rewey Waterworks Rewey · Iowa County |
290 | 2 | 2 | |
|
University Ridge Clubhouse Verona · Dane County |
290 | 0 | 0 | |
|
Christ the King Lutheran Church Delafield Delafield · Waukesha County |
288 | 0 | 0 | |
|
Haugen Waterworks Haugen · Barron County |
287 | 3 | 1 | |
|
Danbury Sanitary District Danbury · Burnett County |
286 | 2 | 1 | |
|
Score Franksville · Racine County |
286 | 0 | 0 | |
|
Eden Meats and Corner Express Eden · Fond du Lac County |
285 | 6 | 0 | |
|
Indian Hill School Milwaukee · Milwaukee County |
285 | 0 | 0 | |
|
Lakepoint Offices Muskego · Waukesha County |
285 | 0 | 0 | |
|
WI Dnr Yellowstone Campground Blanchardville · Lafayette County |
285 | 0 | 0 | |
|
WI Dnr Yellowstone New Shower Building Blanchardville · Lafayette County |
285 | 0 | 0 | |
|
Butternut Waterworks Butternut · Ashland County |
283 | 6 | 3 | |
|
Hollandale Waterworks Hollandale · Iowa County |
283 | 1 | 1 | |
|
Revela Foods Colby · Clark County |
283 | 0 | 0 | |
|
Arbors Delafield · Waukesha County |
280 | 2 | 1 | |
|
Farmington Elementary School Kewaskum · Washington County |
280 | 1 | 0 | |
|
First Congreg United CH of Christ/gingerbread Preschool Watertown · Jefferson County |
280 | 0 | 0 | |
|
Honor Elementary Neosho · Dodge County |
280 | 0 | 0 | |
|
Milladore Waterworks Milladore · Wood County |
280 | 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 | |
|
ST Anthony on the Lake School Pewaukee · Waukesha County |
276 | 1 | 1 | |
|
Camp Ojibwa 1 Eagle River · Vilas County |
275 | 0 | 0 | |
|
Camp Ojibwa 2 Eagle River · Vilas County |
275 | 0 | 0 | |
|
Faith Christian School Williams Bay · Walworth 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 | |
|
Nichols Waterworks Nichols · Outagamie County |
275 | 0 | 0 | |
|
Sky Harbour Center Lacrosse · La Crosse County |
275 | 0 | 0 | |
|
Town of Farmington Sanitary District Mindoro · La Crosse County |
275 | 3 | 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.