Public Notification Rule violations in Wisconsin
719 active public water systems in Wisconsin had a Public Notification Rule violation in the past three years, 719 of them in the latest quarter of EPA's data. What Public Notification Rule is and why it matters.
Systems with a Public Notification Rule violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
McDonalds Vernon Big Bend · Waukesha County |
1,250 | 1 | 1 | |
|
Monticello Waterworks Monticello · Green County |
1,217 | 2 | 1 | |
|
Reedsville Waterworks Reedsville · Manitowoc County |
1,200 | 1 | 1 | |
|
Wilmot Union High School Wilmot · Kenosha County |
1,200 | 1 | 1 | |
|
Hazel Green Waterworks Hazel Green · Grant County |
1,193 | 3 | 1 | |
|
Amherst Waterworks Amherst · Portage County |
1,119 | 3 | 1 | |
|
Oakhill Correctional Inst Oregon · Dane County |
1,096 | 3 | 1 | |
|
Rio Waterworks Rio · Columbia County |
1,095 | 3 | 2 | |
|
Oakfield Waterworks Oakfield · Fond du Lac County |
1,058 | 1 | 1 | |
|
Boyceville Waterworks Boyceville · Dunn County |
1,043 | 2 | 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 | |
|
Shell Lake Waterworks Shell Lake · Washburn County |
950 | 3 | 1 | |
|
Arlington Waterworks Arlington · Columbia County |
946 | 3 | 1 | |
|
Montreal Waterworks Montreal · Iron County |
887 | 2 | 1 | |
|
Hillcrest Estates MHP Altoona · Eau Claire County |
850 | 2 | 2 | |
|
Necedah Waterworks Necedah · Juneau County |
844 | 3 | 1 | |
|
Kettle Moraine Lutheran HS Jackson · Washington County |
821 | 2 | 2 | |
|
Pepin Waterworks Pepin · Pepin County |
816 | 5 | 2 | |
|
Pittsville Waterworks Pittsville · Wood County |
800 | 1 | 1 | |
|
Elmwood Waterworks Elmwood · Pierce County |
798 | 4 | 2 | |
|
Stoddard Waterworks Stoddard · Vernon County |
793 | 3 | 1 | |
|
Plain Waterworks Plain · Sauk County |
792 | 2 | 1 | |
|
Friendship Waterworks Friendship · Adams County |
781 | 4 | 1 | |
|
Alma Waterworks Alma · Buffalo County |
769 | 3 | 1 | |
|
Clayton Waterworks Clayton · Polk County |
765 | 3 | 1 | |
|
Coon Valley Waterworks Coon Valley · Vernon County |
765 | 2 | 1 | |
|
Whitelaw Waterworks Whitelaw · Manitowoc County |
757 | 3 | 1 | |
|
Montfort Waterworks Montfort · Grant County |
718 | 3 | 2 | |
|
Reeseville Waterworks Reeseville · Dodge County |
718 | 3 | 2 | |
|
Wauzeka Waterworks Wauzeka · Crawford County |
711 | 2 | 1 | |
|
Saddle Ridge Estates Portage · Columbia County |
700 | 2 | 1 | |
|
Rock River Leisure Estates Coop Edgerton · Rock County |
650 | 3 | 1 | |
|
Brownsville Waterworks Brownsville · Dodge County |
630 | 2 | 1 | |
|
Kinney Lake Cmpgd Site 701 Marion · Waupaca County |
615 | 2 | 1 | |
|
Mequon Trail Townhomes Mequon · Ozaukee County |
615 | 2 | 1 | |
|
Birds Eye Foods Darien · Walworth County |
610 | 1 | 1 | |
|
Wicked Events and Rodeo Arena Medford · Taylor County |
603 | 4 | 1 | |
|
Elmbrook Lake Country Hartland · Waukesha County |
600 | 4 | 1 | |
|
Iron River Sanitary District Iron River · Bayfield County |
600 | 5 | 1 | |
|
Stetsonville Waterworks Stetsonville · Taylor County |
563 | 3 | 2 | |
|
Kieler SD NO 1 Kieler · Grant County |
560 | 2 | 1 | |
|
Ontario Waterworks Ontario · Vernon County |
554 | 4 | 1 | |
|
Avoca Waterworks Avoca · Iowa County |
545 | 4 | 1 | |
|
Merrillan Waterworks Merrillan · Jackson County |
531 | 3 | 1 | |
|
Suring Waterworks Suring · Oconto County |
517 | 3 | 1 | |
|
Clark County Rehabilitation & Living Center Owen · Clark County |
510 | 5 | 1 | |
|
Three Lakes Sanitary District Three Lakes · Oneida County |
500 | 6 | 1 | |
|
Gays Mills Waterworks Gays Mills · Crawford County |
490 | 4 | 1 | |
|
Alma Center Waterworks Alma Center · Jackson County |
487 | 2 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Public Notification Rule, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Public Notification Rule 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.