All water systems in Wisconsin
11,026 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Kwik Trip 323 Verona Verona · Dane County |
1,108 | 0 | 0 | |
|
Colfax Waterworks Colfax · Dunn County |
1,102 | 0 | 0 | |
|
Glenwood City Waterworks Glenwood City · St. Croix County |
1,102 | 1 | 0 | |
|
WI Dnr Devils Lake East Campground Baraboo · Sauk County |
1,102 | 0 | 0 | |
|
Strum Waterworks Strum · Trempealeau County |
1,100 | 1 | 1 | |
|
WI Dot Rest Area 52 N Cooperstown Green Bay · Manitowoc County |
1,100 | 0 | 0 | |
|
Oakhill Correctional Inst Oregon · Dane County |
1,096 | 3 | 1 | |
|
Rio Waterworks Rio · Columbia County |
1,095 | 3 | 2 | |
|
McDonalds Newville Edgerton · Rock County |
1,085 | 0 | 0 | |
|
Greenwood Waterworks Greenwood · Clark County |
1,079 | 0 | 0 | |
|
Turtle Lake Waterworks Turtle Lake · Barron County |
1,073 | 0 | 0 | |
|
Dickeyville Waterworks Dickeyville · Grant County |
1,069 | 1 | 0 | |
|
Whitetail Crossing Casino County |
1,069 | 0 | 0 | |
|
Robert William Park Water Association INC Milwaukee · Milwaukee County |
1,065 | 0 | 0 | |
|
Hustisford Waterworks Hustisford · Dodge County |
1,063 | 1 | 0 | |
|
Clear Lake Waterworks Clear Lake · Polk County |
1,061 | 0 | 0 | |
|
Oakfield Waterworks Oakfield · Fond du Lac County |
1,058 | 1 | 1 | |
|
Loves Travel Stops Poynette Poynette · Columbia County |
1,051 | 0 | 0 | |
|
Ashwood Grove Edgewater Fond Du Lac · Fond du Lac County |
1,046 | 0 | 0 | |
|
Mosinee East System Mosinee · Marathon County |
1,046 | 0 | 0 | |
|
Boyceville Waterworks Boyceville · Dunn County |
1,043 | 2 | 1 | |
|
McDonalds Westfield Westfield · Marquette County |
1,040 | 1 | 1 | |
|
Balsam Lake Waterworks Balsam Lake · Polk County |
1,031 | 0 | 0 | |
|
Crivitz Waterworks Crivitz · Marinette County |
1,026 | 3 | 1 | |
|
Athens Waterworks Athens · Marathon County |
1,025 | 3 | 1 | |
|
Shelby TN of Wedgewood Vly La Crosse · La Crosse County |
1,020 | 0 | 0 | |
|
Albany Waterworks Albany · Green County |
1,018 | 2 | 0 | |
|
WI Dot Rest Area 51 S Cooperstown Green Bay · Manitowoc County |
1,010 | 0 | 0 | |
|
Green Lake Waterworks Green Lake · Green Lake County |
1,002 | 3 | 1 | |
|
Bristol Village of East Bristol · Kenosha County |
1,001 | 0 | 0 | |
|
Sister Bay Waterworks Sister Bay · Door County |
1,000 | 0 | 0 | |
|
Seven Mile Fair Expo Bldg Caledonia · Racine County |
999 | 1 | 1 | |
|
Seven Mile Fair Market Square Caledonia · Racine County |
999 | 1 | 1 | |
|
Belmont Waterworks Belmont · Lafayette County |
989 | 4 | 1 | |
|
Fond DU Lac TN Water Utility Fond Du Lac · Fond du Lac County |
980 | 2 | 0 | |
|
Benton Waterworks Benton · Lafayette County |
976 | 0 | 0 | |
|
Cascade Mtn Ski 93 Well Main Portage · Columbia County |
967 | 0 | 0 | |
|
Valders Waterworks Valders · Manitowoc County |
954 | 0 | 0 | |
|
Blue Mounds Waterworks Blue Mounds · Dane County |
950 | 2 | 0 | |
|
Laona Sanitary Dist Laona · Forest County |
950 | 4 | 2 | |
|
Pilgrim Park Middle School Elm Grove · Waukesha County |
950 | 0 | 0 | |
|
Shell Lake Waterworks Shell Lake · Washburn County |
950 | 3 | 1 | |
|
Southern Wisconsin Center Union Grove · Racine County |
950 | 4 | 0 | |
|
Wisconsin Veterans Home King · Waupaca County |
950 | 1 | 0 | |
|
Arlington Waterworks Arlington · Columbia County |
946 | 3 | 1 | |
|
Paddock Lake Waterworks Paddock Lake · Kenosha County |
945 | 0 | 0 | |
|
Rib Lake Waterworks Rib Lake · Taylor County |
945 | 2 | 0 | |
|
Siren Waterworks Siren · Burnett County |
941 | 0 | 0 | |
|
Iron Ridge Waterworks Iron Ridge · Dodge County |
937 | 0 | 0 | |
|
Dresser Waterworks Dresser · Polk County |
936 | 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.