Revised Total Coliform Rule (RTCR) violations in Iowa
341 active public water systems in Iowa had a Revised Total Coliform Rule (RTCR) violation in the past three years, 58 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 |
|---|---|---|---|---|
|
Hwh Corporation Moscow · Cedar County |
250 | 2 | 1 | |
|
Quimby Water Supply Quimby · Cherokee County |
249 | 1 | 0 | |
|
Scenic View Campground Rossville · Allamakee County |
240 | 1 | 0 | |
|
Westfair Council Bluffs · Pottawattamie County |
238 | 3 | 1 | |
|
Marion CO Rwd (harvey) Harvey · Marion County |
236 | 1 | 0 | |
|
New Providence Water Supply New Providence · Hardin County |
236 | 1 | 0 | |
|
Super 20 Mobile Home Court Dubuque · Dubuque County |
236 | 2 | 0 | |
|
North American Mobile Home Park Indianola · Warren County |
235 | 1 | 0 | |
|
Chelsea Water Supply Chelsea · Tama County |
229 | 4 | 2 | |
|
Ladora Water Supply Ladora · Iowa County |
229 | 5 | 3 | |
|
Cantril Water Supply Cantril · Van Buren County |
224 | 2 | 0 | |
|
Johnson County AG Association Iowa City · Johnson County |
218 | 4 | 0 | |
|
South Winn Golf Club Calmar · Winneshiek County |
218 | 1 | 0 | |
|
Daybreak Foods Eagle Grove Complex Eagle Grove · Wright County |
210 | 1 | 0 | |
|
YMCA Camp Wapsie Coggon · Linn County |
207 | 1 | 0 | |
|
Hillcrest Academy Kalona · Washington County |
202 | 3 | 0 | |
|
Country Celebrations Event Center Sioux City · Plymouth County |
200 | 3 | 1 | |
|
Derby Grange Golf INC Dubuque · Dubuque County |
200 | 1 | 0 | |
|
Meadow Lake Campgrounds Tipton · Cedar County |
200 | 3 | 1 | |
|
Randolph Water Works Randolph · Fremont County |
192 | 2 | 0 | |
|
Woden Water Supply Woden · Hancock County |
188 | 3 | 0 | |
|
Denali's on the River Independence · Buchanan County |
185 | 1 | 0 | |
|
Soldier Water Supply Soldier · Monona County |
180 | 2 | 0 | |
|
Logan-Missouri Valley Country Club Logan · Harrison County |
178 | 1 | 0 | |
|
College Springs Water Supply College Springs · Page County |
170 | 2 | 0 | |
|
Wallingford Municipal Waterworks Wallingford · Emmet County |
170 | 1 | 0 | |
|
Community Church of Kamrar Kamrar · Hamilton County |
167 | 1 | 0 | |
|
Town Clock Centralia · Dubuque County |
158 | 3 | 0 | |
|
West Grand Golf West Des Moines · Dallas County |
157 | 2 | 0 | |
|
Hidden Hills Golf Course Bettendorf · Scott County |
155 | 2 | 1 | |
|
Prairie View Estates Assoc Johnson Cnty Iowa City · Johnson County |
155 | 1 | 0 | |
|
Wanatee Park Marion · Linn County |
154 | 2 | 0 | |
|
Elkader Grace Evangelical Free Church Elkader · Clayton County |
152 | 3 | 2 | |
|
Tosanak Recreation Area Marble Rock · Floyd County |
151 | 1 | 0 | |
|
Bluebird Hill Atlantic · Cass County |
150 | 3 | 0 | |
|
Scott Co-Buffalo Shores Long Grove · Scott County |
150 | 1 | 0 | |
|
Marr Park Ainsworth · Washington County |
148 | 1 | 0 | |
|
Christian Conference Center Newton · Jasper County |
146 | 1 | 0 | |
|
Lone Rock Water Supply Lone Rock · Kossuth County |
146 | 1 | 0 | |
|
Devils Creek Estates Home Assoc Buffalo · Scott County |
145 | 2 | 0 | |
|
Clear Lake Baptist Church Clear Lake · Cerro Gordo County |
140 | 2 | 1 | |
|
Forestgate Subdivision Iowa City · Johnson County |
140 | 1 | 0 | |
|
MT Joy Mobile Home Park Davenport · Scott County |
140 | 2 | 1 | |
|
Ship's Place Wapello · Louisa County |
136 | 1 | 0 | |
|
Upper Iowa Resort & Rental Dorchester · Allamakee County |
135 | 2 | 1 | |
|
Fremont Golf Course Sidney · Fremont County |
129 | 1 | 0 | |
|
Woodland Wapello Mobile Home Park Wapello · Louisa County |
126 | 1 | 0 | |
|
Carriage Place Estates HOA Bettendorf · Scott County |
125 | 1 | 0 | |
|
Linwood Mining and Minerals Corp Buffalo · Scott County |
125 | 1 | 0 | |
|
Living Hope Mennonite Church Charles City · Floyd County |
125 | 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 Iowa 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.