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 |
|---|---|---|---|---|
|
Shadow Mountain Village Grand County |
115 | 4 | 1 | |
|
Ski Town Village Gunnison County |
113 | 5 | 0 | |
|
Colorado Gators Alamosa County |
110 | 4 | 0 | |
|
Blanca FT Garland MD Costilla County |
108 | 2 | 0 | |
|
Kiowa Outdoor Adventures Elbert County |
108 | 1 | 0 | |
|
Mineota Estates HOA Garfield County |
105 | 4 | 2 | |
|
Granite Canyon General Store Park County |
104 | 1 | 0 | |
|
MT Massive Golf Course Lake County |
104 | 2 | 0 | |
|
Bear Trap Ranch El Paso County |
103 | 3 | 0 | |
|
Jefferson Creek CG South Park County |
102 | 2 | 1 | |
|
Mountain Vista Village Chaffee County |
100 | 3 | 0 | |
|
Pleasant Valley RV Park Fremont County |
100 | 1 | 0 | |
|
Vickers Ranch Hinsdale County |
100 | 1 | 0 | |
|
KOA Alamosa Alamosa County |
99 | 1 | 0 | |
|
Foothills Lodge Rio Grande County |
98 | 1 | 0 | |
|
Neighbors of 7th Street MHP Montezuma County |
96 | 6 | 1 | |
|
Round Mountain CG Park County |
96 | 2 | 1 | |
|
Wide Acres MHP Delta County |
96 | 3 | 0 | |
|
Sonlight Adventures INC Archuleta County |
95 | 5 | 1 | |
|
Swiss Village HOA Pitkin County |
95 | 2 | 0 | |
|
United Church of Christ Parker Hilltop Parker · Douglas County |
95 | 8 | 0 | |
|
Valley West Park La Plata County |
93 | 2 | 0 | |
|
Grandview MHP El Paso County |
90 | 8 | 3 | |
|
YMCA Camp Tumbleson Lake Boulder County |
90 | 2 | 0 | |
|
Holts Guest Ranch Gunnison County |
89 | 1 | 0 | |
|
Rocky Top Motel and CG El Paso County |
85 | 1 | 0 | |
|
Valley Mobile Home LLC Alamosa County |
85 | 12 | 1 | |
|
Alpine Trails RV Park Rio Grande County |
84 | 1 | 0 | |
|
Steamboat Mountain School Routt County |
83 | 8 | 0 | |
|
Granby Ranch Amenities Grand County |
82 | 2 | 0 | |
|
River Church Boulder County |
82 | 2 | 0 | |
|
Asgard Subdivision WA Garfield County |
80 | 8 | 2 | |
|
Northern Water West Slope Campus Granby · Grand County |
80 | 2 | 0 | |
|
Twilight WC La Plata County |
78 | 3 | 1 | |
|
Zuccaros Kitchen Park County |
78 | 2 | 0 | |
|
Sun Meadow Estates Garfield County |
75 | 8 | 0 | |
|
Trappers Lake Lodge Garfield County |
75 | 5 | 1 | |
|
Vega Lodge Mesa County |
75 | 1 | 0 | |
|
Aspen Campground Park County |
72 | 1 | 0 | |
|
Ponderosa CG Conejos County |
70 | 1 | 0 | |
|
Marabou HOA Routt County |
68 | 3 | 0 | |
|
Timberline Lodge Grand County |
68 | 3 | 0 | |
|
San Juan Ranch Estates Association, INC Hinsdale County |
67 | 2 | 0 | |
|
Thirty Mile CG Hinsdale County |
66 | 2 | 1 | |
|
Pinewood Mobile Home Park Larimer County |
65 | 3 | 0 | |
|
Two Buttes Town of Baca County |
64 | 9 | 3 | |
|
Grand Mesa Lodge Delta County |
62 | 3 | 2 | |
|
Cherry Valley Elem School Douglas County |
60 | 3 | 0 | |
|
Cottonwood MHP Adams County |
60 | 3 | 0 | |
|
Sage Outdoor Adventures LLC Gypsum · Eagle County |
60 | 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 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.