All water systems in Wisconsin
11,026 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Autumn Ridge Water System LLC Ixonia · Jefferson County |
575 | 2 | 1 | |
|
Sunnyside Elementary Sch Sobieski · Oconto County |
575 | 1 | 0 | |
|
Dotties Home Bakery & Liquor Oconomowoc · Waukesha County |
567 | 0 | 0 | |
|
Prairie View Elementary School Mukwonago · Waukesha County |
565 | 0 | 0 | |
|
Rocky Knoll Health Care Fac Plymouth · Sheboygan County |
564 | 0 | 0 | |
|
Stetsonville Waterworks Stetsonville · Taylor County |
563 | 3 | 2 | |
|
Minong Waterworks Minong · Washburn County |
561 | 0 | 0 | |
|
Yorkville School Union Grove · Racine County |
561 | 2 | 1 | |
|
Kieler SD NO 1 Kieler · Grant County |
560 | 2 | 1 | |
|
Christ Alone Lutheran School & Church Thiensville · Ozaukee County |
559 | 0 | 0 | |
|
Gibbsville Reformed Church Sheboygan Falls · Sheboygan County |
558 | 0 | 0 | |
|
Ontario Waterworks Ontario · Vernon County |
554 | 4 | 1 | |
|
Kansasville Convenience & Carwash Kansasville · Racine County |
553 | 0 | 0 | |
|
Star Prairie Waterworks Star Prairie · St. Croix County |
553 | 1 | 1 | |
|
Alpine Valley Resort Elkhorn · Walworth County |
550 | 4 | 1 | |
|
Beaver Dam North Water Distribution System Beaver Dam · Dodge County |
550 | 2 | 1 | |
|
City Limits Bar & Banquet Hall Manitowoc · Manitowoc County |
550 | 0 | 0 | |
|
Eddie Whipps Banquet Hall Green Bay · Brown County |
550 | 0 | 0 | |
|
Faith Community Church/school Fort Atkinson · Jefferson County |
550 | 0 | 0 | |
|
Hatley Waterworks Hatley · Marathon County |
550 | 1 | 1 | |
|
Marq, the De Pere · Brown County |
550 | 0 | 0 | |
|
Millhome Supper Club Kiel · Manitowoc County |
550 | 0 | 0 | |
|
Phelps Sanitary District Phelps · Vilas County |
550 | 1 | 0 | |
|
Point Beach Nuclear Main Two Rivers · Manitowoc County |
550 | 0 | 0 | |
|
Trinity Lutheran CH Howards Grove · Sheboygan County |
550 | 0 | 0 | |
|
New Auburn Waterworks New Auburn · Chippewa County |
549 | 1 | 0 | |
|
Linden Waterworks Linden · Iowa County |
547 | 1 | 1 | |
|
Avoca Waterworks Avoca · Iowa County |
545 | 4 | 1 | |
|
Abundant Life Apostolic Church Oconomowoc · Waukesha County |
543 | 2 | 1 | |
|
Boyd Waterworks Boyd · Chippewa County |
540 | 1 | 0 | |
|
Farm & Fleet of Dodgeville Dodgeville · Iowa County |
540 | 2 | 1 | |
|
Section Elementary School Mukwonago · Waukesha County |
540 | 0 | 0 | |
|
ST Paul Lutheran Early Childhood Center & Church Sheboygan Falls · Sheboygan County |
540 | 0 | 0 | |
|
Warrens Waterworks Warrens · Monroe County |
540 | 0 | 0 | |
|
WI Dnr Crystal LK Shower Boulder Jct · Vilas County |
540 | 0 | 0 | |
|
Ettrick Waterworks Ettrick · Trempealeau County |
536 | 0 | 0 | |
|
Burger King Westfield Westfield · Marquette County |
535 | 0 | 0 | |
|
Devils Head Resort Merrimac · Sauk County |
535 | 1 | 1 | |
|
Gresham Waterworks Gresham · Shawano County |
534 | 3 | 0 | |
|
Edgerton I90 Travel Plaza Edgerton · Dane County |
533 | 1 | 0 | |
|
Moorland Golf Center New Berlin · Waukesha County |
533 | 0 | 0 | |
|
Richmond School Sussex · Waukesha County |
533 | 0 | 0 | |
|
Merrillan Waterworks Merrillan · Jackson County |
531 | 3 | 1 | |
|
North Crawford School Soldiers Grove · Crawford County |
525 | 2 | 1 | |
|
Spacious Acres Mobile Home Community Sullivan · Jefferson County |
525 | 0 | 0 | |
|
WI Dnr Council Grnds Entrance Office Merrill · Lincoln County |
525 | 0 | 0 | |
|
Melrose Waterworks Melrose · Jackson County |
524 | 1 | 0 | |
|
Country Dale School Franklin · Milwaukee County |
523 | 0 | 0 | |
|
Amy Belle School Colgate · Washington County |
522 | 3 | 1 | |
|
Capitol Cafe Brookfield · Waukesha County |
520 | 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.