E. coli (Escherichia coli) violations in Wisconsin
9 active public water systems in Wisconsin had a E. coli (Escherichia coli) violation in the past three years, 9 of them in the latest quarter of EPA's data. What E. coli (Escherichia coli) is and why it matters.
Systems with a E. coli (Escherichia coli) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
North Hills MHP Beaver Dam · Dodge County |
420 | 2 | 1 | |
|
Eagle Chateau Apts Kenosha · Kenosha County |
125 | 3 | 2 | |
|
Sweet Allyn Park Shopiere · Rock County |
100 | 1 | 1 | |
|
Andersons Trailer Court Rice Lake · Barron County |
95 | 7 | 4 | |
|
Manitou Falls Sanitary District NO 1 Superior · Douglas County |
95 | 10 | 5 | |
|
Oak Park Community Platteville · Grant County |
90 | 4 | 1 | |
|
Fish Creek BP Fish Creek · Door County |
65 | 1 | 0 | |
|
Neshonoc Lakeside Cmpgd Lower West Salem · La Crosse County |
60 | 1 | 0 | |
|
Compassionate Heights of Beechwood Kewaskum · Sheboygan County |
30 | 3 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved E. coli (Escherichia coli), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not E. coli (Escherichia coli) alone.
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.