All water systems in Wisconsin
11,026 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Rstore #4517 Kewaskum · Washington County |
720 | 0 | 0 | |
|
Timber Lee Chris Ctr Redwood Commons East Troy · Walworth County |
720 | 0 | 0 | |
|
Cascade Waterworks Cascade · Sheboygan County |
719 | 0 | 0 | |
|
All Stop Plaza Lodi · Columbia County |
718 | 0 | 0 | |
|
Montfort Waterworks Montfort · Grant County |
718 | 3 | 2 | |
|
Potosi Waterworks Potosi · Grant County |
718 | 2 | 0 | |
|
Reeseville Waterworks Reeseville · Dodge County |
718 | 3 | 2 | |
|
Caseys General Store #3793 Newburg · Washington County |
715 | 0 | 0 | |
|
Sevastopol High Sch Sturgeon Bay · Door County |
715 | 0 | 0 | |
|
LA Farge Waterworks La Farge · Vernon County |
712 | 1 | 1 | |
|
Wauzeka Waterworks Wauzeka · Crawford County |
711 | 2 | 1 | |
|
ST Johns Lutheran School Newburg · Washington County |
710 | 2 | 1 | |
|
Orthopaedic Associates Pewaukee · Waukesha County |
709 | 0 | 0 | |
|
Station Hwy 33 Hartford · Dodge County |
708 | 0 | 0 | |
|
Station 67 Ashippun · Dodge County |
707 | 0 | 0 | |
|
Almena Waterworks Almena · Barron County |
705 | 1 | 1 | |
|
ST Nazianz Waterworks St Nazianz · Manitowoc County |
705 | 0 | 0 | |
|
Tigerton Waterworks Tigerton · Shawano County |
705 | 3 | 0 | |
|
Christ Lutheran School and Church Big Bend · Waukesha County |
704 | 0 | 0 | |
|
Olin-Sang-Ruby Union Institute Main System Oconomowoc · Jefferson County |
704 | 0 | 0 | |
|
Birch Terrace Mobile Home Community Menomonie · Dunn County |
700 | 0 | 0 | |
|
Brookwood High School Ontario · Monroe County |
700 | 1 | 0 | |
|
Durham Meadows Water Trust Muskego · Waukesha County |
700 | 0 | 0 | |
|
Holy Rosary Catholic Church Wisconsin Rapids · Wood County |
700 | 0 | 0 | |
|
Ithaca Public School K-12 Richland Center · Richland 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 | |
|
Saddle Ridge Estates Portage · Columbia County |
700 | 2 | 1 | |
|
Gibraltar High School Fish Creek · Door County |
695 | 0 | 0 | |
|
Ridgeway Waterworks Ridgeway · Iowa County |
690 | 3 | 0 | |
|
Bloomington Waterworks Bloomington · Grant County |
682 | 0 | 0 | |
|
Stockbridge Waterworks Stockbridge · Calumet County |
680 | 2 | 0 | |
|
Viola Waterworks Viola · Vernon County |
667 | 2 | 0 | |
|
Rolling Hills Elementary Schl Mukwonago · Waukesha County |
666 | 0 | 0 | |
|
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 | |
|
Livingston Waterworks Livingston · Grant County |
664 | 0 | 0 | |
|
Lake Mills Travel Plaza Lake Mills · Jefferson County |
662 | 0 | 0 | |
|
Madison Country Day School Waunakee · Dane County |
660 | 2 | 0 | |
|
Prentice Waterworks Prentice · Price County |
660 | 3 | 1 | |
|
Randall School Burlington · Kenosha County |
658 | 0 | 0 | |
|
Racine Bible Church Sturtevant · Racine County |
657 | 0 | 0 | |
|
Waukesha Bible Church Waukesha · Waukesha County |
654 | 0 | 0 | |
|
Norwalk Waterworks Norwalk · Monroe County |
653 | 0 | 0 | |
|
Rose Glen Elementary Waukesha · Waukesha County |
652 | 2 | 1 | |
|
Webster Waterworks Webster · Burnett County |
652 | 0 | 0 | |
|
Greenleaf Waterworks Greenleaf · Brown County |
650 | 0 | 0 | |
|
Minocqua Hazelhurst Elem Sch Minocqua · Oneida County |
650 | 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.