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 |
|---|---|---|---|---|
|
Lodge at San Isabel Custer County |
200 | 2 | 2 | |
|
Harmels Ranch Resort Gunnison County |
198 | 4 | 1 | |
|
Ophir Town of San Miguel County |
193 | 9 | 1 | |
|
Wilderness Ranch Young Life Hinsdale County |
181 | 2 | 0 | |
|
Lazear Domestic WC Delta County |
178 | 8 | 2 | |
|
May Queen CG Lake County |
176 | 2 | 1 | |
|
Shady Lane MHP Adams County |
165 | 1 | 0 | |
|
Bivvi Hostel San Miguel County |
162 | 1 | 0 | |
|
Grand Mesa Christian Assn Camp Delta County |
161 | 3 | 1 | |
|
Stone Mountain Lodge and Cabins Boulder County |
160 | 4 | 1 | |
|
11 Mile Sra N Shore Pressure Park County |
155 | 1 | 0 | |
|
Rock Creek Farm WS Boulder County |
151 | 2 | 0 | |
|
Camp Rosalie Park County |
150 | 3 | 2 | |
|
Stage Run HOA Arapahoe County |
150 | 4 | 1 | |
|
Longview Mobile Home Park Denver County |
147 | 3 | 0 | |
|
Spillway CG South Lower Park County |
144 | 2 | 2 | |
|
Huajatolla Valley Estates INC Huerfano County |
132 | 8 | 2 | |
|
Shadow Mountain Mobile Home Park El Paso County |
132 | 8 | 2 | |
|
Galambs Mobile Home and RV Park Adams County |
130 | 6 | 3 | |
|
Joyful Journey Hot Springs and Spa Saguache County |
126 | 2 | 1 | |
|
Ponderosa Lodge INC Chaffee County |
125 | 4 | 1 | |
|
Tumbling River Ranch Park County |
124 | 3 | 1 | |
|
Cottonwood Cove Mineral County |
120 | 2 | 0 | |
|
Kim Town of Las Animas County |
116 | 6 | 4 | |
|
Chalk Lake Campground Chaffee County |
114 | 2 | 0 | |
|
Marble WC Gunnison County |
113 | 6 | 0 | |
|
Rivercrest Acres HOA Mineral County |
110 | 2 | 1 | |
|
Alamosa Migrant & Seasonal Head Start Alamosa County |
109 | 2 | 1 | |
|
Highland Mobile Home Park Weld County |
107 | 3 | 0 | |
|
Mesa Lakes Lodge and Resort Mesa County |
107 | 2 | 1 | |
|
Twin Lakes Inn Lake County |
104 | 1 | 0 | |
|
Liberty School Yuma County |
102 | 3 | 1 | |
|
A and B WA INC Prowers County |
100 | 4 | 1 | |
|
Chancellors MHC El Paso County |
100 | 5 | 0 | |
|
Crest Mobile Estates MHP El Paso County |
100 | 7 | 7 | |
|
Garcia Domestic Wua Costilla County |
100 | 4 | 0 | |
|
Twin Rivers Guest Ranch Conejos County |
100 | 1 | 1 | |
|
Wind River Ranch WS Larimer County |
100 | 2 | 1 | |
|
Livermore WS Larimer County |
99 | 3 | 1 | |
|
Last Dollar Pud San Miguel County |
96 | 3 | 1 | |
|
Eden Valley Institute Larimer County |
91 | 11 | 1 | |
|
High Octane Pueblo County |
90 | 1 | 0 | |
|
North Washington Wua Adams County |
90 | 6 | 5 | |
|
San Juan Ranch Hinsdale County |
90 | 1 | 1 | |
|
Tucson WC Adams County |
90 | 2 | 1 | |
|
CD Water Ordway · Crowley County |
89 | 4 | 0 | |
|
Deep Creek Creede Haven Mineral County |
86 | 6 | 2 | |
|
Emmanuel Chapel Rio Grande County |
82 | 3 | 1 | |
|
Alpine Village MHP Teller County |
80 | 4 | 0 | |
|
Browns Canyon Rafting Chaffee County |
80 | 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.