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 |
|---|---|---|---|---|
|
New London Waterworks New London · Waupaca County |
7,187 | 2 | 1 | |
|
New Odanah County |
1,839 | 5 | 0 | |
|
Belmont Waterworks Belmont · Lafayette County |
989 | 4 | 1 | |
|
Kettle Moraine Lutheran HS Jackson · Washington County |
821 | 2 | 2 | |
|
Friendship Waterworks Friendship · Adams County |
781 | 4 | 1 | |
|
Avoca Waterworks Avoca · Iowa County |
545 | 4 | 1 | |
|
MT Zion Christian Church Lake Geneva · Walworth County |
509 | 2 | 1 | |
|
Bay View Heights INC Stoughton · Dane County |
450 | 2 | 0 | |
|
Rainbow Lake Manor MHP Bristol · Kenosha County |
350 | 2 | 0 | |
|
Shoreland Lutheran High School Kenosha · Kenosha County |
330 | 3 | 1 | |
|
Birch Hill County |
322 | 3 | 0 | |
|
WI Historical Stonefield Barn Cassville · Grant County |
303 | 2 | 1 | |
|
WI Historical Stonefield AG Museum Cassville · Grant County |
300 | 2 | 1 | |
|
Browntown Waterworks Browntown · Green County |
256 | 7 | 1 | |
|
Franks Field County |
242 | 3 | 0 | |
|
Richards of Dunbar Dunbar Tn · Marinette County |
220 | 3 | 1 | |
|
Shepherd of the Bay Lutheran Ellison Bay · Door County |
203 | 3 | 1 | |
|
Rome Riverside Campground Sullivan · Jefferson County |
202 | 2 | 0 | |
|
WI Dnr Cadiz Springs West Picnic Browntown · Green County |
200 | 1 | 0 | |
|
Dairyfood USA INC Blue Mounds · Dane County |
160 | 4 | 0 | |
|
WI Dnr Perrot Cmpgd Trempealeau · Trempealeau County |
156 | 1 | 0 | |
|
Whitetail Bluff Camp and Resort Expansion Cassville · Grant County |
150 | 1 | 0 | |
|
Alsum Farms & Produce INC Drinking Water System Friesland · Columbia County |
145 | 1 | 0 | |
|
McNaughton Correctional Center Lake Tomahawk · Oneida County |
133 | 1 | 0 | |
|
Tpc Wisconsin Clubhouse Madison · Dane County |
130 | 2 | 1 | |
|
Schleichers Chute Inn LLC Suring · Oconto County |
110 | 3 | 1 | |
|
Northern D Lites Drive Inn Lakewood · Oconto County |
110 | 3 | 2 | |
|
Quail Run Golf Links Richland Center · Richland County |
106 | 1 | 0 | |
|
Maple Ridge Bible Church Boscobel · Crawford County |
104 | 3 | 0 | |
|
Whitetail Bluff Camp and Resort Cassville · Grant County |
103 | 2 | 0 | |
|
Rockin Robins Wabeno · Forest County |
101 | 3 | 0 | |
|
Edge O Dells Resort Cmpgd Expansion & Pool Wisconsin Dells · Juneau County |
100 | 1 | 0 | |
|
Harmony Hills MH Village Rhinelander · Oneida County |
100 | 1 | 0 | |
|
Ice Bean Grille Lake Tomahawk · Oneida County |
100 | 2 | 2 | |
|
Matthias Academy Trevor · Kenosha County |
94 | 1 | 0 | |
|
Glen Flora Waterworks Glen Flora · Rusk County |
93 | 7 | 3 | |
|
Pilgrim Place Office Park Brookfield · Waukesha County |
90 | 2 | 1 | |
|
Albatross Drive in Washington Island · Door County |
85 | 2 | 1 | |
|
Camp Door Sister Bay · Door County |
83 | 1 | 0 | |
|
The Happy Place Oconomowoc · Waukesha County |
79 | 1 | 0 | |
|
Cheeks Bar & Grill Wausau · Marathon County |
75 | 1 | 0 | |
|
Alexanders Fish Creek · Door County |
72 | 2 | 1 | |
|
The Landing County |
68 | 1 | 0 | |
|
Country View Estates Deerfield · Dane County |
65 | 3 | 1 | |
|
ST Benedicts Abbey Benet Lake · Kenosha County |
59 | 1 | 0 | |
|
Parkside Inn Ellison Bay · Door County |
54 | 3 | 1 | |
|
8 HI Club Bar Goodman Tn · Marinette County |
50 | 2 | 1 | |
|
Baer Manufacturing #2 Hudson · St. Croix County |
50 | 3 | 0 | |
|
Forestry Center County |
48 | 2 | 1 | |
|
Nelsons Rustic Resort Clintonville · Shawano County |
40 | 3 | 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.