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 |
|---|---|---|---|---|
|
Washington Prairie Lutheran Church Decorah · Winneshiek County |
124 | 1 | 0 | |
|
Culvers Lawn and Garden Marion · Linn County |
120 | 2 | 1 | |
|
Spook Cave and Campground Mcgregor · Clayton County |
118 | 2 | 1 | |
|
Star Water Dubuque · Dubuque County |
110 | 1 | 0 | |
|
Andover Water Supply Andover · Clinton County |
109 | 1 | 0 | |
|
Peace Reformed Church Garner · Hancock County |
105 | 3 | 1 | |
|
Kabeles Trading Post Spirit Lake · Dickinson County |
104 | 3 | 0 | |
|
Walker Homestead Farm and Winery Iowa City · Johnson County |
104 | 2 | 0 | |
|
Alluvial Brewing Company Ames · Story County |
100 | 1 | 0 | |
|
Benefit Water District #2 Boone · Boone County |
100 | 1 | 0 | |
|
Country Estates MHP Long Grove · Scott County |
100 | 1 | 0 | |
|
Knapp Creek Event Center Walford · Benton County |
100 | 3 | 1 | |
|
Mediapolis Village Court Mediapolis · Des Moines County |
100 | 2 | 0 | |
|
Stockyard Osterdock · Clayton County |
100 | 3 | 1 | |
|
Valley Oaks Clinton · Clinton County |
100 | 4 | 0 | |
|
Wildwood Acres Association Monmouth · Jones County |
100 | 1 | 0 | |
|
Morley Municipal Water Supply Morley · Jones County |
98 | 2 | 0 | |
|
Deer Ridge Homeowners Water Assc. Palo · Linn County |
94 | 1 | 0 | |
|
Hidden Acres Subdivision Solon · Johnson County |
90 | 3 | 1 | |
|
The Learning Journey Council Bluffs · Pottawattamie County |
90 | 2 | 0 | |
|
Twin Knolls Fourth/fifth Addition Toddville · Linn County |
90 | 4 | 2 | |
|
Corporation of New Melleray Dubuque · Dubuque County |
89 | 1 | 0 | |
|
Chase Mobile Home Park Iowa Falls · Hardin County |
85 | 3 | 0 | |
|
Hampton Country Club Hampton · Franklin County |
82 | 2 | 0 | |
|
Hansell Water Department Hansell · Franklin County |
82 | 3 | 0 | |
|
Twisters Gymnastics INC Cedar Rapids · Linn County |
82 | 2 | 1 | |
|
Word of Faith Dominion Church Lake Mills · Winnebago County |
81 | 2 | 0 | |
|
Church of Jesus Christ of Lds (atlantic) Atlantic · Cass County |
80 | 2 | 1 | |
|
Kingdom Hall Elkader · Clayton County |
80 | 2 | 1 | |
|
New Cooperative, INC (roelyn) Moorland · Webster County |
80 | 4 | 0 | |
|
Spring Valley Bible Camp Muscatine · Muscatine County |
80 | 1 | 0 | |
|
Woodlyn Hills Algona · Kossuth County |
80 | 3 | 0 | |
|
Bulgers Hollow Recreation Area Clinton · Clinton County |
77 | 3 | 1 | |
|
NE Iowa Christian Service Camp Bristow · Butler County |
75 | 1 | 0 | |
|
Fairview Terrrace Mobile Home Park LLC Anamosa · Jones County |
72 | 4 | 2 | |
|
Jackson Heights Golf Course Jackson Junction · Winneshiek County |
72 | 2 | 0 | |
|
Loyal Order of the Moose-Iowa Falls Iowa Falls · Hardin County |
71 | 1 | 0 | |
|
Scales Pointe North Liberty · Johnson County |
71 | 2 | 0 | |
|
Beyonder Getaway at Sleepy Hollow Oxford · Johnson County |
70 | 4 | 2 | |
|
Loyal Order of the Moose Lodge/c Rapids Cedar Rapids · Linn County |
70 | 2 | 1 | |
|
Quality Water, Inc. #2 (k-L) Dubuque · Dubuque County |
70 | 3 | 0 | |
|
Valley Heights 1st Annex Blue Grass · Scott County |
70 | 2 | 0 | |
|
Ila Campus LLC Maharishi Vedic City · Jefferson County |
68 | 4 | 2 | |
|
Linn Hollow MHP LLC Washington · Washington County |
68 | 1 | 0 | |
|
Deese Thirsty Camel Conesville · Louisa County |
67 | 3 | 1 | |
|
US Nameplate Company INC Mount Vernon · Linn County |
65 | 8 | 1 | |
|
Valley View Water Association Missouri Valley · Harrison County |
65 | 3 | 0 | |
|
Vca Avondale Animal Hospital Des Moines · Polk County |
64 | 2 | 1 | |
|
E-Stop Emerson · Mills County |
63 | 2 | 0 | |
|
Sunny Brae Golf & Country Club Osage · Mitchell County |
63 | 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.