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 |
|---|---|---|---|---|
|
North Crawford School Soldiers Grove · Crawford County |
525 | 2 | 1 | |
|
Amy Belle School Colgate · Washington County |
522 | 3 | 1 | |
|
Sand Valley Golf Resort Hole 11 Nekoosa · Adams County |
500 | 1 | 0 | |
|
Three Lakes Sanitary District Three Lakes · Oneida County |
500 | 6 | 1 | |
|
Knapp Waterworks Knapp · Dunn County |
486 | 2 | 0 | |
|
Brandybrook Subdivision Wales · Waukesha County |
474 | 1 | 0 | |
|
ST Cloud Waterworks St Cloud · Fond du Lac County |
471 | 2 | 0 | |
|
Cochrane Waterworks Cochrane · Buffalo County |
450 | 4 | 0 | |
|
Sextonville Waterworks Sextonville · Richland County |
425 | 2 | 0 | |
|
North Hills MHP Beaver Dam · Dodge County |
420 | 2 | 1 | |
|
Erin School Hartford · Washington County |
405 | 3 | 0 | |
|
Lake Lawn Resort 3 Main Well Delavan · Walworth County |
405 | 3 | 0 | |
|
WI Dnr Kmsfnu Long Lake Pumphouse Cascade · Fond du Lac County |
400 | 2 | 1 | |
|
Schlitz Audubon Nature Center Bayside · Milwaukee County |
399 | 1 | 0 | |
|
Rockfield School Germantown · Washington County |
375 | 3 | 2 | |
|
Goodman Sanitary Dist NO 1 Goodman · Marinette County |
350 | 6 | 1 | |
|
Northwood School Minong · Washburn County |
350 | 2 | 0 | |
|
WI Dnr Brunet Island Office Cornell · Chippewa County |
350 | 2 | 1 | |
|
Pound Waterworks Pound · Marinette County |
349 | 4 | 0 | |
|
Friesland Waterworks Friesland · Columbia County |
345 | 3 | 0 | |
|
Oakdale Waterworks Oakdale · Monroe County |
317 | 2 | 0 | |
|
Northernaire Sanitary District Three Lakes · Oneida County |
315 | 4 | 0 | |
|
Wilderness Crossing Travel Cntr Wittenberg · Shawano County |
313 | 3 | 0 | |
|
Ixonia Elementary School Ixonia · Jefferson County |
310 | 1 | 0 | |
|
Minikani YMCA Camp Explorer Unit Hubertus · Washington County |
309 | 1 | 0 | |
|
Walkers Bar & Grill Ripon · Green Lake County |
302 | 2 | 1 | |
|
Camp Edwards YMCA Cooper Rec Center East Troy · Walworth County |
300 | 1 | 0 | |
|
Four Corners Elementary School Superior · Douglas County |
300 | 1 | 0 | |
|
Rock Springs Waterworks Rock Springs · Sauk County |
292 | 1 | 0 | |
|
Eden Meats and Corner Express Eden · Fond du Lac County |
285 | 6 | 0 | |
|
Town of Farmington Sanitary District Mindoro · La Crosse County |
275 | 3 | 1 | |
|
Sheldon Water Utility Sheldon · Rusk County |
265 | 6 | 1 | |
|
Red Cabin at Green Acres Fond Du Lac · Fond du Lac County |
254 | 2 | 0 | |
|
WI Dnr Wyalusing Visitors Station Bagley · Grant County |
254 | 1 | 0 | |
|
Ironton Waterworks La Valle · Sauk County |
253 | 4 | 1 | |
|
Eagle Lake Manor Kansasville · Racine County |
250 | 4 | 2 | |
|
Lake Wisconsin Country Club Prairie Du Sac · Columbia County |
250 | 2 | 0 | |
|
Radisson Waterworks Radisson · Sawyer County |
241 | 7 | 1 | |
|
Trienda Holdings LLC Portage · Columbia County |
240 | 1 | 0 | |
|
Maplewood Village Appleton · Outagamie County |
225 | 1 | 0 | |
|
Pine Valley Community Village Richland Center · Richland County |
225 | 3 | 1 | |
|
Gratiot Waterworks Gratiot · Lafayette County |
224 | 7 | 1 | |
|
J & WS Place Casco · Kewaunee County |
220 | 2 | 1 | |
|
Romys Nitingale Black Creek · Outagamie County |
220 | 1 | 0 | |
|
Twin Bridge Resort Stephenson Tn · Marinette County |
220 | 2 | 1 | |
|
Wild Tomato Fish Creek · Door County |
215 | 2 | 1 | |
|
Kountry Aire Est MHP III Mauston · Juneau County |
210 | 2 | 0 | |
|
Crossroads Supper Club Platteville · Grant County |
208 | 2 | 0 | |
|
Triple Play Sports Bar & Grill Wisconsin Dells · Columbia County |
208 | 2 | 1 | |
|
Ivees at Main Germantown · Washington County |
206 | 1 | 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.