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 |
|---|---|---|---|---|
|
Cottonwood Wsd Douglas County |
10,867 | 7 | 0 | |
|
Inverness Wsd Arapahoe County |
8,140 | 5 | 0 | |
|
Florence City of Fremont County |
7,500 | 4 | 0 | |
|
Grand County Water NO 1 Grand County |
5,400 | 11 | 0 | |
|
Keystone Summit Lodge Summit County |
3,241 | 2 | 0 | |
|
Chemical Materials Activity West Pueblo County |
3,000 | 8 | 0 | |
|
Aspen Ski Corp HI Alpine L9 Pitkin County |
2,900 | 2 | 0 | |
|
Holyoke City of Phillips County |
2,540 | 2 | 2 | |
|
Towaoc Water System County |
2,020 | 5 | 2 | |
|
Mighty Argo Metropolitan District #2 Idaho Springs · Clear Creek County |
2,000 | 2 | 0 | |
|
Norwood Water Commission San Miguel County |
1,700 | 3 | 0 | |
|
Echo Lake Lodge Clear Creek County |
1,510 | 1 | 0 | |
|
Del Norte Town of Rio Grande County |
1,429 | 4 | 0 | |
|
Apple Tree Park Garfield County |
1,160 | 2 | 0 | |
|
Steamboat Lake State Park Routt County |
1,092 | 3 | 2 | |
|
Poudre Valley MHC Larimer County |
985 | 4 | 3 | |
|
Collins Aire MHC Larimer County |
946 | 4 | 2 | |
|
Highland Lakes WD Teller County |
875 | 7 | 2 | |
|
Lago Vista Mobile Home Park Loveland · Larimer County |
842 | 4 | 3 | |
|
Mountain View at Rivers Edge RV Mineral County |
640 | 2 | 1 | |
|
White Star Host Site Lake County |
528 | 2 | 2 | |
|
Countryside Estates Pueblo Pueblo County |
508 | 7 | 3 | |
|
Painted Rocks Manitou Lake CG Teller County |
498 | 1 | 0 | |
|
Blanca Town of Costilla County |
469 | 2 | 0 | |
|
Hermit Park Open Space Larimer County |
464 | 1 | 0 | |
|
Stagecoach State Park Routt County |
405 | 4 | 0 | |
|
Worth the Drive Bakery Monte Vista · Rio Grande County |
392 | 2 | 1 | |
|
San Isabel Boy Scout Ranch Pueblo County |
385 | 2 | 1 | |
|
Rainbow Grocery Rio Grande County |
368 | 2 | 1 | |
|
Camp Cedaredge Delta County |
367 | 3 | 1 | |
|
Skylark Mobile Home Community Boulder County |
342 | 3 | 0 | |
|
Navigators Eagle Lake Camp El Paso County |
340 | 3 | 0 | |
|
Collegiate Peak Campground NO 2 Chaffee County |
336 | 3 | 1 | |
|
Ilium Valley WS San Miguel County |
322 | 2 | 1 | |
|
Aspen Equestrian Blue Creek Ranch Garfield County |
300 | 3 | 0 | |
|
Lds Joseph Rye · Huerfano County |
300 | 1 | 1 | |
|
Starwood Metropolitan District Pitkin County |
300 | 3 | 0 | |
|
Meeker Park Lodge Boulder County |
270 | 3 | 0 | |
|
Crow Hill Bible Church Park County |
268 | 2 | 0 | |
|
J Bar CC Ranch Camp Elbert County |
250 | 1 | 1 | |
|
Warm Springs Owners Mutual WA Park County |
250 | 3 | 1 | |
|
Applewood MHC Logan County |
250 | 3 | 0 | |
|
Monarch Mountain Lodge Chaffee County |
247 | 14 | 5 | |
|
Sanctuary Golf Course Douglas County |
240 | 1 | 0 | |
|
Angel of Shavano CG NO 1 Chaffee County |
220 | 2 | 0 | |
|
Sky Line Lodge Conejos County |
210 | 2 | 0 | |
|
Mile High Mobile Home Park Adams County |
209 | 3 | 0 | |
|
Arrowhead Point Chaffee County |
204 | 3 | 2 | |
|
Warren Industries INC Moffat County |
203 | 4 | 2 | |
|
Buttermilk MD Pitkin County |
200 | 7 | 2 |
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.