Revised Total Coliform Rule (RTCR) violations in Colorado
421 active public water systems in Colorado had a Revised Total Coliform Rule (RTCR) violation in the past three years, 165 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 |
|---|---|---|---|---|
|
Lake George Cabins and RV Park Park County |
33 | 2 | 1 | |
|
Lake Fork HOA Hinsdale County |
32 | 2 | 0 | |
|
Deep Creek Mountain Valley Estates Mineral County |
31 | 11 | 4 | |
|
Deerlodge Park Campground Moffat County |
31 | 2 | 2 | |
|
Sweetwater River Resort Cotopaxi · Fremont County |
31 | 3 | 1 | |
|
Christ Lutheran Church School Summit County |
30 | 1 | 0 | |
|
Menkhaven Lodge on the Conejos Conejos County |
30 | 2 | 0 | |
|
Mesa Mobile Park La Plata County |
30 | 5 | 1 | |
|
Calvary Boulder Valley Boulder County |
29 | 3 | 0 | |
|
Lake Fork Cove Alliance INC Gunnison County |
27 | 2 | 0 | |
|
Little Squaw Resort Hinsdale County |
27 | 2 | 1 | |
|
Ute Lodge Rio Blanco County |
25 | 3 | 1 | |
|
Mineral Farms Wua Ouray County |
24 | 4 | 0 | |
|
Gold Pan RV and Cabins Conejos County |
20 | 2 | 0 | |
|
Moffat Town of Saguache County |
12 | 11 | 4 | |
|
Aspen City of Pitkin County |
31,100 | 3 | 0 | |
|
Telluride Town of San Miguel County |
7,900 | 6 | 0 | |
|
Steamboat Ski Corp Thunderhead Routt County |
6,517 | 2 | 0 | |
|
Stratmoor Hills Wsd El Paso County |
6,500 | 6 | 0 | |
|
Winter Park Resort Sunspot Grand County |
5,006 | 1 | 0 | |
|
Winter Park Resort Lunch Rock Grand County |
5,001 | 1 | 0 | |
|
Winter Park Resort Snoasis Grand County |
5,001 | 2 | 0 | |
|
Royal Gorge Bridge CO of Colo Fremont County |
3,024 | 5 | 0 | |
|
Palmer Lake Town of El Paso County |
2,686 | 4 | 0 | |
|
Rangeview MD Arapahoe County |
2,487 | 3 | 0 | |
|
Cdot NO Name Rest Area Garfield County |
2,058 | 1 | 0 | |
|
Navajo State Park Archuleta County |
2,015 | 2 | 0 | |
|
Cdot Hanging Lake Rest Area Garfield County |
1,829 | 1 | 0 | |
|
Steamboat II MD Routt County |
1,450 | 8 | 1 | |
|
Foxridge Farms MHP Arapahoe County |
1,440 | 4 | 0 | |
|
Cdot Bair Ranch Rest Area Garfield County |
1,407 | 1 | 0 | |
|
Purgatory MD La Plata County |
1,364 | 3 | 0 | |
|
Mancos Rural Water Company Montezuma County |
1,300 | 10 | 5 | |
|
Edgemont Ranch MD La Plata County |
1,200 | 5 | 0 | |
|
Ellicott Elem SR High School El Paso County |
1,114 | 7 | 1 | |
|
Dallas Creek WC Ouray County |
1,059 | 4 | 0 | |
|
Cloverleaf Colorado LLC Larimer County |
1,007 | 3 | 0 | |
|
Cdot Grizzly Creek Rest Area Garfield County |
1,001 | 1 | 0 | |
|
Antonito Town of Conejos County |
981 | 3 | 0 | |
|
Kiowa Water and Wastewater Authority Elbert County |
910 | 2 | 0 | |
|
Arbordale Acres MHP Boulder County |
901 | 5 | 0 | |
|
Garden Valley El Paso County |
900 | 8 | 2 | |
|
Rogers Mesa WC Delta County |
840 | 3 | 0 | |
|
Camp Alexander Boy Scouts Park County |
785 | 3 | 0 | |
|
Durango la Plata Airport La Plata County |
780 | 8 | 0 | |
|
Roxborough State Park Douglas County |
710 | 1 | 0 | |
|
Centauri HS Centauri MS Conejos County |
700 | 6 | 1 | |
|
EL Moro Hoehne Pipeline Assoc Las Animas County |
655 | 4 | 0 | |
|
Prairie Greens MHP Weld County |
654 | 4 | 0 | |
|
Ramble CG Alamosa · Alamosa County |
601 | 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 Colorado 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.