All water systems in Wisconsin
9,089 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
WI Dnr Gov Nelson 3 Office & Shop Waunakee · Dane County |
795 | 0 | 0 | |
|
Cross Point Community Church Oconomowoc · Waukesha County |
764 | 0 | 0 | |
|
Lakeland Camp & Trailer Park Milton · Rock County |
755 | 0 | 0 | |
|
Wade House-Visitor Center and Museum Greenbush · Sheboygan County |
754 | 0 | 0 | |
|
The Columbian West Bend · Washington County |
752 | 0 | 0 | |
|
Emrick Lake Cmpgrnd Cabins Oxford · Adams County |
750 | 0 | 0 | |
|
Emrick Lake Cmpgrnd East Shower House Oxford · Adams County |
750 | 0 | 0 | |
|
Emrick Lake Cmpgrnd East Sites Oxford · Adams County |
750 | 0 | 0 | |
|
Emrick Lake Cmpgrnd Handpump Oxford · Adams County |
750 | 0 | 0 | |
|
Emrick Lake Cmpgrnd Main Well Oxford · Adams County |
750 | 0 | 0 | |
|
Emrick Lake Cmpgrnd Office Oxford · Adams County |
750 | 0 | 0 | |
|
Emrick Lake Cmpgrnd Reserve Area Oxford · Adams County |
750 | 0 | 0 | |
|
Jammers Wisconsin Rapids · Wood County |
725 | 0 | 0 | |
|
United Cooperative Store & Offices Beaver Dam · Dodge County |
723 | 0 | 0 | |
|
Rstore #4517 Kewaskum · Washington County |
720 | 0 | 0 | |
|
Timber Lee Chris Ctr Redwood Commons East Troy · Walworth County |
720 | 0 | 0 | |
|
All Stop Plaza Lodi · Columbia County |
718 | 0 | 0 | |
|
Caseys General Store #3793 Newburg · Washington County |
715 | 0 | 0 | |
|
Station Hwy 33 Hartford · Dodge County |
708 | 0 | 0 | |
|
Station 67 Ashippun · Dodge County |
707 | 0 | 0 | |
|
Olin-Sang-Ruby Union Institute Main System Oconomowoc · Jefferson County |
704 | 0 | 0 | |
|
Holy Rosary Catholic Church Wisconsin Rapids · Wood County |
700 | 0 | 0 | |
|
Northwoods Inn Pickerel · Langlade County |
700 | 0 | 0 | |
|
Olin-Sang-Ruby Union Institute Bath House Oconomowoc · Jefferson County |
700 | 0 | 0 | |
|
Olin-Sang-Ruby Union Institute Dining Hall Oconomowoc · Jefferson County |
700 | 1 | 1 | |
|
WI Dnr Lake Wissota B Bldg Chippewa Falls · Chippewa County |
665 | 0 | 0 | |
|
WI Dnr Lake Wissota Shop Chippewa Falls · Chippewa County |
665 | 1 | 0 | |
|
WI Dnr Lake Wissota Welcome Center Chippewa Falls · Chippewa County |
665 | 0 | 0 | |
|
Lake Mills Travel Plaza Lake Mills · Jefferson County |
662 | 0 | 0 | |
|
Racine Bible Church Sturtevant · Racine County |
657 | 0 | 0 | |
|
Waukesha Bible Church Waukesha · Waukesha County |
654 | 0 | 0 | |
|
Scouting America Camp Mkjw East Camp 1 Pearson · Langlade County |
650 | 0 | 0 | |
|
WI Dot Rest Area 31 & Info Center Lacrosse La Crosse · La Crosse County |
650 | 0 | 0 | |
|
Calvary Community Church Original Bldg 1972 Williams Bay · Walworth County |
620 | 0 | 0 | |
|
Bluemkes BP Rosendale · Fond du Lac County |
616 | 0 | 0 | |
|
Kinney Lake Cmpgd Site 701 Marion · Waupaca County |
615 | 2 | 1 | |
|
WI Dnr Devils Lake Quartzite Campground Baraboo · Sauk County |
615 | 0 | 0 | |
|
Olivia Telschow LLC Merrill · Lincoln County |
612 | 0 | 0 | |
|
Ferguson Orchard-Eau Claire Eau Claire · Eau Claire County |
610 | 0 | 0 | |
|
Hubbleton Brewing Taproom & Grill Watertown · Jefferson County |
610 | 0 | 0 | |
|
Reserve at Hartford the Hartford · Washington County |
610 | 0 | 0 | |
|
Luckys Bar & Grille on the Lake Lodi · Columbia County |
606 | 0 | 0 | |
|
Saron United Church of Christ Sheboygan Falls · Sheboygan County |
603 | 0 | 0 | |
|
Wicked Events and Rodeo Arena Medford · Taylor County |
603 | 4 | 1 | |
|
Christ Church Mequon Mequon · Ozaukee County |
600 | 0 | 0 | |
|
Peace Lutheran Church Dresser · Polk County |
600 | 0 | 0 | |
|
ST Marys Catholic Church Auburndale · Wood County |
600 | 0 | 0 | |
|
WI Dnr Wyalusing Central Pump House Bagley · Grant County |
600 | 0 | 0 | |
|
Neosho Station Neosho · Dodge County |
596 | 0 | 0 | |
|
Emagine Geneva Lakes Lake Geneva · Walworth County |
592 | 0 | 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.