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 |
|---|---|---|---|---|
|
Mapleway Bowl & Restaurant Oconomowoc · Waukesha County |
100 | 1 | 0 | |
|
Miller Brothers Partnership Waterford · Racine County |
100 | 3 | 1 | |
|
Rustic Timbers Office Egg Harbor · Door County |
100 | 2 | 1 | |
|
Thal Acres Links & Lanes Westfield · Marquette County |
100 | 1 | 0 | |
|
U S F S Northern Great Lakes Center Ashland · Bayfield County |
100 | 1 | 0 | |
|
WI Dnr Buckhorn Group Camp Necedah · Juneau County |
100 | 1 | 0 | |
|
Wiskerchen Cheese LLC Auburndale · Wood County |
100 | 3 | 1 | |
|
Aztalan Bio Johnson Creek · Jefferson County |
99 | 3 | 1 | |
|
Andersons Trailer Court Rice Lake · Barron County |
95 | 7 | 4 | |
|
Buliks Mobile Home Park Spooner · Washburn County |
93 | 4 | 1 | |
|
Edgewood Mobile Home Park Genoa · Vernon County |
90 | 6 | 1 | |
|
Kountry Aire Est MHP I Mauston · Juneau County |
90 | 2 | 0 | |
|
Oak Park Community Platteville · Grant County |
90 | 4 | 1 | |
|
Quiet Country Community Assn Two Rivers · Manitowoc County |
90 | 1 | 0 | |
|
S and J Wild River MHP Hayward · Sawyer County |
90 | 4 | 1 | |
|
Shoreline Resort Ellison Bay · Door County |
90 | 2 | 1 | |
|
WI Dnr Richard Bong Headquarters Kansasville · Kenosha County |
90 | 1 | 0 | |
|
Castle Rock Inn Muscoda · Grant County |
85 | 2 | 1 | |
|
Island Pizza Wash Island · Door County |
85 | 2 | 1 | |
|
Kids at Play Child Care Center Stoddard · Vernon County |
85 | 1 | 0 | |
|
Old School Bar & Grill Green Lake · Green Lake County |
85 | 2 | 1 | |
|
Baileys Harbor Yacht Club Resort Baileys Harbor · Door County |
82 | 3 | 1 | |
|
Edgewater Resort Ephraim · Door County |
82 | 2 | 1 | |
|
Party Palace Fond Du Lac · Fond du Lac County |
82 | 2 | 0 | |
|
Trinity Lutheran Church Medford · Taylor County |
82 | 1 | 0 | |
|
Cozy Creek Holcombe · Chippewa County |
81 | 1 | 0 | |
|
Chefs Hat Cafe Ephraim · Door County |
80 | 2 | 1 | |
|
Country View Mobile Home Community LLC Oregon · Dane County |
80 | 4 | 1 | |
|
Eagle Cave Resort 2 Restrooms Blue River · Richland County |
80 | 3 | 0 | |
|
Five Star Building a Finished Goods Randall · Kenosha County |
80 | 2 | 0 | |
|
Five Star Building B D and E Composite Randall · Kenosha County |
80 | 2 | 0 | |
|
Five Star Building C Composite Building Randall · Kenosha County |
80 | 3 | 0 | |
|
Five Star Building F Window Coating Randall · Kenosha County |
80 | 4 | 1 | |
|
Rivers Bend Cmpgd Montello · Marquette County |
80 | 2 | 0 | |
|
Rivers Bend Resort Tavern Montello · Marquette County |
80 | 1 | 0 | |
|
ST Pauls Evangelical Church West Bend · Washington County |
80 | 3 | 1 | |
|
Washington Island Sch Washington Island · Door County |
80 | 1 | 0 | |
|
Dollar General Armstrong Creek 30082 Armstrong Creek · Forest County |
79 | 2 | 1 | |
|
Wilsons Restr Ephraim · Door County |
79 | 2 | 1 | |
|
Osteria Tre Tassi Ellison Bay · Door County |
78 | 2 | 1 | |
|
ST Pauls EV Lutheran CH Berlin · Green Lake County |
78 | 1 | 0 | |
|
Mels Micro Brewery Richland Center · Richland County |
77 | 2 | 0 | |
|
Sheldon Northwoods Country Store Sheldon · Taylor County |
77 | 1 | 0 | |
|
Bedrock Church Rio · Columbia County |
76 | 2 | 0 | |
|
Black Hawk Park-1961 Well De Soto · Vernon County |
75 | 1 | 0 | |
|
Indian Shores Camp Strongheart Woodruff · Oneida County |
75 | 2 | 0 | |
|
Mississippi Sports & Recreation De Soto · Vernon County |
75 | 3 | 0 | |
|
Northland Mission Dunbar · Marinette County |
75 | 7 | 0 | |
|
Sugar CR Bible CP Shower Hse Ferryville · Crawford County |
75 | 1 | 0 | |
|
WI Dnr Harrington Beach Visitor Center Belgium · Ozaukee County |
75 | 2 | 1 |
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.