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 |
|---|---|---|---|---|
|
Wilson Mesa San Miguel County |
290 | 6 | 0 | |
|
Jamestown Town of Boulder County |
280 | 7 | 1 | |
|
Meeker Park Lodge Boulder County |
270 | 3 | 0 | |
|
Nueva Vida Mobile Home Park Larimer County |
266 | 7 | 3 | |
|
Rio Grande Water Company Rio Grande County |
265 | 2 | 0 | |
|
Sleepy Valley Community MHP El Paso County |
260 | 8 | 1 | |
|
Grand Meadow of Longmont MHP Boulder County |
255 | 3 | 0 | |
|
Florissant Wsd Teller County |
250 | 9 | 0 | |
|
Hanson Mesa Domestic Pipeline CO INC Delta County |
250 | 3 | 0 | |
|
Stewart Mesa WC Delta County |
250 | 3 | 0 | |
|
Monarch Mountain Lodge Chaffee County |
247 | 14 | 5 | |
|
Coalby Domestic WC Delta County |
239 | 3 | 0 | |
|
Perry Mansfield Camp Routt County |
216 | 4 | 1 | |
|
Clark Store Routt County |
215 | 2 | 0 | |
|
Western Hills MHP Mesa County |
213 | 3 | 1 | |
|
YMCA Camp Shady Brook Douglas County |
208 | 2 | 0 | |
|
Catto Center at Toklat Ashcroft · Pitkin County |
206 | 3 | 0 | |
|
Hesperus Baptist Camp INC La Plata County |
206 | 5 | 0 | |
|
Buckhorn Ranch WS Gunnison County |
205 | 1 | 0 | |
|
Warren Industries INC Moffat County |
203 | 4 | 2 | |
|
Hamilton Creek MD Summit County |
200 | 2 | 0 | |
|
Oak Meadows MHP Montezuma County |
200 | 7 | 1 | |
|
Phippsburg Town of Routt County |
200 | 5 | 0 | |
|
Red Rock Valley WD El Paso County |
200 | 7 | 1 | |
|
Timbers Wsd Routt County |
200 | 4 | 0 | |
|
Mountain View Mobile Home Park Montrose County |
193 | 3 | 0 | |
|
Castle Park MHP Douglas County |
191 | 3 | 0 | |
|
Deserado Mine Rio Blanco County |
175 | 4 | 0 | |
|
1859 Restaurant at Seven Falls El Paso County |
170 | 2 | 0 | |
|
Elegant Hills MHP Montezuma County |
170 | 4 | 1 | |
|
Westcreek Lakes WD Douglas County |
165 | 8 | 2 | |
|
Camp Santa Maria WC Park County |
160 | 4 | 1 | |
|
Islamic Center of Boulder Boulder County |
157 | 1 | 0 | |
|
Hidden Valley Water District Jefferson County |
155 | 4 | 0 | |
|
Rocky Mountain Mennonite Camp Teller County |
155 | 4 | 0 | |
|
Easy Water LLC Hesperus · La Plata County |
154 | 3 | 1 | |
|
Genoa Town of Lincoln County |
153 | 9 | 1 | |
|
Ragged Mountain Camp Gunnison County |
152 | 4 | 0 | |
|
Shwayder Camp Temple Emanuel Clear Creek County |
151 | 2 | 0 | |
|
Little Elk Creek Pitkin County |
150 | 4 | 0 | |
|
Meadow Village Mobile Home Park Weld County |
150 | 5 | 1 | |
|
Peak Oilfield Services LLC Weld County |
150 | 3 | 1 | |
|
Sans Souci Cooperative Boulder County |
150 | 8 | 2 | |
|
Sleepy Bear MHP Routt County |
150 | 9 | 0 | |
|
Island Cove Park La Plata County |
143 | 3 | 0 | |
|
River Ranch Village MHP LLC Grand County |
140 | 5 | 2 | |
|
Northstar Mobile Home Park Larimer County |
136 | 4 | 1 | |
|
Mishawaka Larimer County |
134 | 2 | 0 | |
|
Trinidad Manufactured Home Community Las Animas County |
133 | 3 | 0 | |
|
Farish Memorial Ctr 1 Usaf El Paso County |
132 | 1 | 0 |
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.