Revised Total Coliform Rule (RTCR) violations in Wisconsin
888 active public water systems in Wisconsin had a Revised Total Coliform Rule (RTCR) violation in the past three years, 97 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mount Sterling Waterworks Mount Sterling · Crawford County |
206 | 5 | 1 | |
|
Christianos Pizza Green Lake Green Lake · Green Lake County |
205 | 1 | 0 | |
|
Lake View Inn Markesan · Green Lake County |
205 | 2 | 1 | |
|
Ncn New Addition Black River Falls · Jackson County |
205 | 1 | 0 | |
|
Subway Sandwiches Poynette Poynette · Columbia County |
205 | 1 | 0 | |
|
64 North Bar and Grill Medford · Taylor County |
203 | 2 | 0 | |
|
Plum Petroleum LLC Plum City · Pierce County |
202 | 3 | 0 | |
|
Redeemer United Church of Christ Sussex · Waukesha County |
202 | 2 | 0 | |
|
Bains Country Estates MHP Sheboygan Falls · Sheboygan County |
200 | 4 | 1 | |
|
Melrose Mindoro Vocational School Melrose · Jackson County |
200 | 2 | 1 | |
|
Smoke and Spice Stephenson Tn · Marinette County |
200 | 3 | 1 | |
|
WI Dnr Kmsfnu Mauthe LK Beach Campbellsport · Fond du Lac County |
200 | 1 | 0 | |
|
WI Dnr Richard Bong Sunrise Showers Kansasville · Kenosha County |
200 | 1 | 0 | |
|
Mount Hope Waterworks Mount Hope · Grant County |
181 | 2 | 0 | |
|
Lannon Water Utility Lannon · Waukesha County |
172 | 2 | 0 | |
|
Squires I Brookfield · Waukesha County |
172 | 2 | 1 | |
|
Doorway to Learning Sturgeon Bay · Door County |
170 | 2 | 0 | |
|
Erin Hills GC Western Hydration Stations Hartford · Washington County |
170 | 1 | 0 | |
|
Houlton MHP LLC Houlton · St. Croix County |
170 | 1 | 0 | |
|
North Cape School Franksville · Racine County |
170 | 3 | 1 | |
|
Hidden Meadows Watertown · Dodge County |
166 | 4 | 0 | |
|
WI Dnr Yellowstone East Fts Well Blanchardville · Lafayette County |
162 | 2 | 0 | |
|
Boaz Country Store Richland Center · Richland County |
161 | 2 | 0 | |
|
Birchwood Golf Course Clubhouse Hazel Green · Grant County |
160 | 1 | 0 | |
|
Midway Village Mobile Home Park Evansville · Rock County |
160 | 4 | 1 | |
|
Richfield Square Hubertus · Washington County |
155 | 4 | 2 | |
|
Jamestown East Condominium Owners Association West Bend · Washington County |
153 | 1 | 0 | |
|
Silver Lake Mobil Silver Lake · Kenosha County |
152 | 1 | 0 | |
|
P Town Inn Medford · Taylor County |
151 | 2 | 1 | |
|
Foxys Briggsville · Marquette County |
150 | 1 | 0 | |
|
Indian Shores Front Shower Woodruff · Oneida County |
150 | 3 | 0 | |
|
Kickapoo Kwik Stop Readstown · Vernon County |
150 | 1 | 0 | |
|
Poynette Mobile Estates Poynette · Columbia County |
150 | 4 | 1 | |
|
Riverview Estates MHP Plover · Portage County |
150 | 1 | 0 | |
|
WI Dnr Bearskin Hand Pump South Blue Lake Harshaw · Oneida County |
150 | 1 | 0 | |
|
WI Dnr Kmsf Lapham Peak Homestead Hollow Delafield · Waukesha County |
150 | 1 | 0 | |
|
Nasonville Dairy Marshfield · Wood County |
145 | 1 | 0 | |
|
WI Dnr Pike Lake Cmpgrd Hartford · Washington County |
140 | 1 | 0 | |
|
Drought School Franksville · Racine County |
136 | 1 | 0 | |
|
Traver School Lake Geneva · Walworth County |
136 | 1 | 0 | |
|
Oaks the Baileys Harbor · Door County |
135 | 4 | 1 | |
|
Maranatha Academy INC Superior · Douglas County |
132 | 2 | 1 | |
|
Village Bar Cuba City · Grant County |
129 | 3 | 1 | |
|
Best Western-Wittenberg Wittenberg · Shawano County |
128 | 1 | 0 | |
|
Kettle Moraine YMCA Holy Trinity Congregation Newburg · Washington County |
127 | 2 | 1 | |
|
Lakewood Village Apts Twin Lakes · Kenosha County |
125 | 3 | 1 | |
|
WI Dnr Kmsf Lapham Peak Evergreen Shelter Delafield · Waukesha County |
125 | 1 | 0 | |
|
Gordon Correctional Center Gordon · Douglas County |
124 | 4 | 2 | |
|
Fox Cities Leasing Seymour · Outagamie County |
123 | 1 | 0 | |
|
Deer Trail Village Mosinee · Marathon County |
120 | 7 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) 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.