Surface Water Treatment Rule (SWTR) violations in Colorado
284 active public water systems in Colorado had a Surface Water Treatment Rule (SWTR) violation in the past three years, 50 of them in the latest quarter of EPA's data. What Surface Water Treatment Rule (SWTR) is and why it matters.
Systems with a Surface Water Treatment Rule (SWTR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Farish Memorial Ctr 2 Usaf El Paso County |
132 | 2 | 0 | |
|
Gold Rush WC Teller County |
132 | 3 | 0 | |
|
Shadow Mountain Mobile Home Park El Paso County |
132 | 8 | 2 | |
|
Green Acres MHP Eagle County |
130 | 3 | 0 | |
|
Gcc Rio Grande Red Rock Plant Pueblo County |
124 | 3 | 0 | |
|
Apache MHP La Plata County |
120 | 3 | 0 | |
|
Gcc Energy Water System La Plata County |
120 | 3 | 0 | |
|
Hidden Valley HOA Water Company Paonia · Delta County |
120 | 5 | 0 | |
|
Oasis RV Resort La Plata County |
120 | 3 | 1 | |
|
Ute Pass WA INC La Plata County |
120 | 6 | 1 | |
|
Neighbors of Dreamland MHP Pueblo County |
115 | 5 | 2 | |
|
Redi Services West Rio Blanco County |
115 | 3 | 0 | |
|
Pagosa Springs RV Park Pagosa Springs · Archuleta County |
114 | 1 | 0 | |
|
Ski Town Village Gunnison County |
113 | 5 | 0 | |
|
Billings MHP Garfield County |
110 | 3 | 0 | |
|
Highland Mobile Home Park Weld County |
107 | 3 | 0 | |
|
Vista Verde Guest Ranch Routt County |
104 | 2 | 0 | |
|
Bear Trap Ranch El Paso County |
103 | 3 | 0 | |
|
Alpine Brook WS Boulder County |
100 | 2 | 0 | |
|
Camp Eden Gilpin County |
100 | 3 | 0 | |
|
Native Water Woodland Park · Teller County |
100 | 3 | 0 | |
|
Neighbors of 7th Street MHP Montezuma County |
96 | 6 | 1 | |
|
Wide Acres MHP Delta County |
96 | 3 | 0 | |
|
Sonlight Adventures INC Archuleta County |
95 | 5 | 1 | |
|
River Dance RV Park Eagle County |
94 | 4 | 0 | |
|
Shambhala Mountain Center Larimer County |
90 | 2 | 0 | |
|
Freeman Creek La Plata County |
88 | 4 | 1 | |
|
Lakeview Estates Hinsdale County |
85 | 2 | 0 | |
|
Hidden Lake Community Montrose · Montrose County |
83 | 2 | 0 | |
|
River-Dale Ranch Park County |
83 | 2 | 0 | |
|
South Fork Heights Apartments Rio Grande County |
80 | 10 | 3 | |
|
Trails End for Girls Larimer County |
80 | 3 | 1 | |
|
Meadow Mtn Water Supply Boulder County |
76 | 2 | 0 | |
|
Hermit Basin Lodge Custer County |
75 | 2 | 0 | |
|
Rainbow Lake Resort Buena Vista · Chaffee County |
75 | 4 | 0 | |
|
Sunrise Ranch Larimer County |
75 | 4 | 0 | |
|
Table Mesa Village MHP Boulder County |
75 | 1 | 0 | |
|
Eleven Mile Ranch Association Park County |
72 | 4 | 0 | |
|
North Rainbow Falls WC Douglas County |
69 | 2 | 0 | |
|
Tres Valles West Huerfano County |
68 | 1 | 0 | |
|
Mill Creek Wia Clear Creek County |
67 | 4 | 0 | |
|
Blue Leaf School LLC Boulder County |
65 | 5 | 1 | |
|
Freemons Guest Ranch Mineral County |
65 | 3 | 1 | |
|
Pinewood Mobile Home Park Larimer County |
65 | 3 | 0 | |
|
Cottonwood MHP Adams County |
60 | 3 | 0 | |
|
Mad Dog WC Delta County |
60 | 2 | 0 | |
|
Tall Pines Village La Plata County |
60 | 8 | 0 | |
|
Elk Creek Ranch Rio Blanco County |
57 | 3 | 1 | |
|
Rio Blanco Ranch Company Garfield County |
55 | 3 | 1 | |
|
Valley Maint Corp NO 2 Teller County |
55 | 9 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved Surface Water Treatment Rule (SWTR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Surface Water Treatment Rule (SWTR) 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.