Groundwater Rule (GWR) violations in Colorado
46 active public water systems in Colorado had a Groundwater Rule (GWR) violation in the past three years, 46 of them in the latest quarter of EPA's data. What Groundwater Rule (GWR) is and why it matters.
Systems with a Groundwater Rule (GWR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Colorado City MD Pueblo County |
2,755 | 8 | 4 | |
|
Wikiup MHP Adams County |
2,500 | 2 | 1 | |
|
Las Animas City of Bent County |
2,139 | 1 | 1 | |
|
Friendly Village of the Rockies Adams County |
1,046 | 4 | 3 | |
|
Mile HI Water INC Hauler Boulder County |
1,000 | 3 | 2 | |
|
Pinewood Springs WD Larimer County |
745 | 6 | 1 | |
|
Swink Town of Otero County |
660 | 3 | 1 | |
|
White Star Host Site Lake County |
528 | 2 | 2 | |
|
Granada Town of Prowers County |
515 | 12 | 1 | |
|
Manzanola Town of Otero County |
497 | 3 | 2 | |
|
Bailey Wsd Park County |
483 | 7 | 3 | |
|
ST Marys Glacier Wsd Clear Creek County |
451 | 6 | 1 | |
|
Aguilar Town of Las Animas County |
447 | 4 | 1 | |
|
Collegiate Peak Campground NO 2 Chaffee County |
336 | 3 | 1 | |
|
Fruitland Domestic WC Montrose County |
335 | 10 | 3 | |
|
Camp Dick CG Boulder County |
328 | 2 | 1 | |
|
Steamboat Springs KOA Routt County |
301 | 1 | 1 | |
|
Palmer Lake Mobile Home Ranch El Paso County |
268 | 2 | 1 | |
|
Monarch Mountain Lodge Chaffee County |
247 | 14 | 5 | |
|
Colorado Christian Service Camp Park County |
233 | 1 | 1 | |
|
Mountaindale CG and Cabins Fremont County |
228 | 8 | 0 | |
|
Riviere Estates Rio Grande County |
211 | 3 | 1 | |
|
Red Rock Valley WD El Paso County |
200 | 7 | 1 | |
|
Tranquil Acres WS Teller County |
180 | 4 | 1 | |
|
May Queen CG Lake County |
176 | 2 | 1 | |
|
Bonnie Blues Event Venue Elbert County |
164 | 3 | 2 | |
|
Sans Souci Cooperative Boulder County |
150 | 8 | 2 | |
|
Prairie View Ranch WD Morgan County |
140 | 2 | 2 | |
|
Arrowhead MHP El Paso County |
135 | 6 | 0 | |
|
North Washington Wua Adams County |
90 | 6 | 5 | |
|
Colorado Lions Camp Teller County |
89 | 1 | 1 | |
|
Mogote Meadow Conejos County |
85 | 1 | 1 | |
|
Valley Mobile Home LLC Alamosa County |
85 | 12 | 1 | |
|
Crystola Roadhouse Teller County |
80 | 6 | 2 | |
|
South Fork Heights Apartments Rio Grande County |
80 | 10 | 3 | |
|
Twilight WC La Plata County |
78 | 3 | 1 | |
|
Steamboat Golf Club INC Routt County |
67 | 5 | 1 | |
|
Blue Leaf School LLC Boulder County |
65 | 5 | 1 | |
|
Two Buttes Town of Baca County |
64 | 9 | 3 | |
|
Hartman Town of Prowers County |
61 | 13 | 6 | |
|
North Holbrook WC Otero County |
58 | 4 | 2 | |
|
Stoner RV Resort Stoner · Montezuma County |
58 | 2 | 2 | |
|
Crow Valley Campground Weld County |
57 | 2 | 1 | |
|
Valley Maint Corp NO 2 Teller County |
55 | 9 | 2 | |
|
Opal Foods LLC Hudson Farm Weld County |
49 | 2 | 2 | |
|
Moffat Town of Saguache County |
12 | 11 | 4 |
About this data
A system is counted once if any of its violations in the past three years involved Groundwater Rule (GWR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Groundwater Rule (GWR) 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.