All water systems in Wisconsin
11,026 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
S & S Cycle Lower Well Viola · Richland County |
180 | 0 | 0 | |
|
S & S Cycle Upper Well Viola · Richland County |
180 | 0 | 0 | |
|
Salem Lakes Business Park Salem · Kenosha County |
180 | 0 | 0 | |
|
Tower Rock Elementary School Prairie Du Sac · Sauk County |
180 | 1 | 1 | |
|
University Lake Brumder Gym & Middle School Hartland · Waukesha County |
180 | 1 | 1 | |
|
UW Agricultural Research Station Hdqtrs Arlington · Columbia County |
180 | 1 | 1 | |
|
West Bend BP West Bend · Washington County |
180 | 0 | 0 | |
|
Wood Lake Camp and Retreat Center 1 Main Well Grantsburg · Burnett County |
180 | 0 | 0 | |
|
Actus Nutrition Fond DU Lac Fond Du Lac · Fond du Lac County |
177 | 1 | 1 | |
|
Calvary Baptist Church Menomonee Falls · Waukesha County |
177 | 0 | 0 | |
|
ST Germain Dollar General St Germain · Vilas County |
177 | 0 | 0 | |
|
Von Loppys Ixonia · Jefferson County |
177 | 0 | 0 | |
|
Brighton 1 School District Kansasville · Kenosha County |
175 | 0 | 0 | |
|
Cloverleaf Mobile Home Park Clintonville · Shawano County |
175 | 0 | 0 | |
|
Crescent Lake Bible Camp Rhinelander · Oneida County |
175 | 0 | 0 | |
|
Dairymens INC Wolf Lake Boulder Junction · Vilas County |
175 | 0 | 0 | |
|
Eleva Strum High School Strum · Trempealeau County |
175 | 1 | 0 | |
|
Johnsonville Global Headquarters Office Sheboygan Falls · Sheboygan County |
175 | 0 | 0 | |
|
Luther Point Bible Camp Loktu Center Grantsburg · Burnett County |
175 | 0 | 0 | |
|
N & M Transfer Company Well 3 Neenah · Winnebago County |
175 | 0 | 0 | |
|
Old Hickory Country Club Club House Beaver Dam · Dodge County |
175 | 0 | 0 | |
|
Red Granite Bar Merrill · Marathon County |
175 | 0 | 0 | |
|
Sayner Pub Sayner · Vilas County |
175 | 1 | 1 | |
|
ST Croix Improvements Prescott · Pierce County |
175 | 0 | 0 | |
|
Stagecoach Inn Fort Atkinson · Rock County |
175 | 0 | 0 | |
|
Stone Lake Sanitary District Stone Lake · Sawyer County |
175 | 0 | 0 | |
|
Synergy Cooperative Sand Creek Sand Creek · Dunn County |
175 | 0 | 0 | |
|
Trail Ridge Ranch Cafeteria Hillsboro · Vernon County |
175 | 0 | 0 | |
|
WI Dnr Starrett LK Cmpgd 32 Sayner · Vilas County |
175 | 1 | 1 | |
|
Beloit Club Beloit · Rock County |
174 | 0 | 0 | |
|
Don Q Inn Hotel Dodgeville · Iowa County |
174 | 0 | 0 | |
|
Mequon Umc & North Shore Preschool Mequon · Ozaukee County |
174 | 1 | 1 | |
|
Boat House Pub & Eatery Fox Lake · Dodge County |
172 | 0 | 0 | |
|
Lannon Water Utility Lannon · Waukesha County |
172 | 2 | 0 | |
|
Shores of Fox Lake Fox Lake · Dodge County |
172 | 0 | 0 | |
|
Squires I Brookfield · Waukesha County |
172 | 2 | 1 | |
|
Americold Logistics Darien · Walworth County |
170 | 1 | 1 | |
|
Bays Nail Spa Thiensville · Ozaukee County |
170 | 0 | 0 | |
|
Bog Golf Course Clubhouse Saukville · Ozaukee County |
170 | 0 | 0 | |
|
Camp Highlands Sayner · Vilas County |
170 | 0 | 0 | |
|
Cave of the Mounds Visitor Center Blue Mounds · Dane County |
170 | 0 | 0 | |
|
Christ EV Lutheran School Weyauwega · Waushara County |
170 | 0 | 0 | |
|
Christmas MT Prv Site Wisconsin Dells · Sauk County |
170 | 0 | 0 | |
|
Church of the Resurrection Pewaukee · Waukesha County |
170 | 0 | 0 | |
|
Conover Evangelical Free Church Conover · Vilas County |
170 | 0 | 0 | |
|
Doorway to Learning Sturgeon Bay · Door County |
170 | 2 | 0 | |
|
Erin Hills GC Cart Barn Hartford · Washington County |
170 | 0 | 0 | |
|
Erin Hills GC Halfway House Rest Station South Hartford · Washington County |
170 | 0 | 0 | |
|
Erin Hills GC Old Clubhouse Hartford · Washington County |
170 | 0 | 0 | |
|
Erin Hills GC Western Hydration Stations Hartford · Washington County |
170 | 1 | 0 |
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.