Gross Alpha, Excl. Radon and U violations in Colorado
51 active public water systems in Colorado had a Gross Alpha, Excl. Radon and U violation in the past three years, 11 of them in the latest quarter of EPA's data. What Gross Alpha, Excl. Radon and U is and why it matters.
Systems with a Gross Alpha, Excl. Radon and U violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mountain Wsd Jefferson County |
1,941 | 4 | 0 | |
|
May Valley WA Prowers County |
1,500 | 3 | 0 | |
|
South Swink Water Authority Otero County |
622 | 1 | 0 | |
|
Eureka WC Otero County |
498 | 9 | 1 | |
|
Consolidated Glacier View Meadows Assoc Larimer County |
395 | 3 | 0 | |
|
Valley WC Otero County |
270 | 6 | 2 | |
|
Patterson Valley WC Otero County |
96 | 6 | 1 | |
|
Elephant Rock MHP El Paso County |
60 | 6 | 2 | |
|
Heartwood CO OP Housing La Plata County |
60 | 9 | 1 | |
|
Pacheco Trailer Park Rio Grande County |
36 | 13 | 3 | |
|
Deep Creek Mountain Valley Estates Mineral County |
31 | 11 | 4 | |
|
East Cherry Creek Valley Wsd Arapahoe County |
66,130 | 1 | 0 | |
|
Woodmoor Wsd El Paso County |
18,031 | 1 | 0 | |
|
Cottonwood Wsd Douglas County |
10,867 | 7 | 0 | |
|
Mountain Village Town of San Miguel County |
9,700 | 3 | 0 | |
|
Inverness Wsd Arapahoe County |
8,140 | 5 | 0 | |
|
Parkville WD Lake County |
7,500 | 2 | 0 | |
|
Julesburg Town of Sedgwick County |
1,225 | 4 | 1 | |
|
Fowler Town of Otero County |
1,169 | 4 | 1 | |
|
Forest Lakes MD El Paso County |
1,049 | 1 | 0 | |
|
Homestead WC Jefferson County |
1,000 | 4 | 0 | |
|
Brook Forest WD Jefferson County |
998 | 5 | 1 | |
|
Morrison Creek Metro District Routt County |
800 | 3 | 0 | |
|
Independence Wsd Elbert County |
567 | 2 | 1 | |
|
Saguache Town of Saguache County |
504 | 9 | 1 | |
|
Manzanola Town of Otero County |
497 | 3 | 2 | |
|
Idledale Wsd Jefferson County |
350 | 8 | 1 | |
|
Rifle Correctional Center Garfield County |
287 | 3 | 0 | |
|
Cheraw Town of Otero County |
254 | 5 | 2 | |
|
Mountaindale CG and Cabins Fremont County |
228 | 8 | 0 | |
|
Riviere Estates Rio Grande County |
211 | 3 | 1 | |
|
Westcreek Lakes WD Douglas County |
165 | 8 | 2 | |
|
Turkey Canon Ranch WD El Paso County |
138 | 1 | 0 | |
|
Vroman WC Otero County |
125 | 4 | 2 | |
|
Willow Brook Metro District Summit County |
120 | 9 | 0 | |
|
West Grand Valley WA Otero County |
100 | 5 | 1 | |
|
Excell Lawson Village Clear Creek County |
90 | 3 | 0 | |
|
Asgard Subdivision WA Garfield County |
80 | 8 | 2 | |
|
Fayette WC Otero County |
75 | 7 | 2 | |
|
Sun Meadow Estates Garfield County |
75 | 8 | 0 | |
|
Peaks Shadow LLC El Paso County |
67 | 5 | 1 | |
|
Signal Mountain Ranch Property Owners WC Pueblo County |
66 | 5 | 1 | |
|
Peyton Pines El Paso County |
56 | 5 | 1 | |
|
Three Mile TP Garfield County |
50 | 3 | 0 | |
|
South Side WA Otero County |
44 | 9 | 1 | |
|
Rolling Plains Estate Arapahoe County |
40 | 3 | 0 | |
|
Wayside Summit County |
40 | 3 | 1 | |
|
Saddlehorn Ranch MD El Paso County |
39 | 8 | 1 | |
|
G and M Mobile Home Park Rio Grande County |
30 | 11 | 0 | |
|
Hidden Springs Ranch Routt County |
27 | 7 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Gross Alpha, Excl. Radon and U, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Gross Alpha, Excl. Radon and U 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.