Ethylbenzene violations in Colorado
71 active public water systems in Colorado had a Ethylbenzene violation in the past three years, 4 of them in the latest quarter of EPA's data. What Ethylbenzene is and why it matters.
Systems with a Ethylbenzene violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Steamboat Mountain School Routt County |
83 | 8 | 0 | |
|
South Fork Heights Apartments Rio Grande County |
80 | 10 | 3 | |
|
Sunshine Mesa Domestic WC Delta County |
76 | 5 | 0 | |
|
Sun Meadow Estates Garfield County |
75 | 8 | 0 | |
|
Sunrise Ranch Larimer County |
75 | 4 | 0 | |
|
Hartman Town of Prowers County |
61 | 13 | 6 | |
|
Elephant Rock MHP El Paso County |
60 | 6 | 2 | |
|
Tall Pines Village La Plata County |
60 | 8 | 0 | |
|
Valley Maint Corp NO 2 Teller County |
55 | 9 | 2 | |
|
Blanca Forestry Products Fort Garland · Costilla County |
50 | 6 | 0 | |
|
Cdot Eisenhower Johnson Tunnel Clear Creek County |
50 | 4 | 0 | |
|
Western Metals Recycling Englewood · Arapahoe County |
45 | 7 | 0 | |
|
Wayside Summit County |
40 | 3 | 1 | |
|
Saddlehorn Ranch MD El Paso County |
39 | 8 | 1 | |
|
TV Hills Water Custer County |
38 | 5 | 1 | |
|
Vallecito Village La Plata County |
34 | 7 | 2 | |
|
G and M Mobile Home Park Rio Grande County |
30 | 11 | 0 | |
|
Hidden Springs Ranch Routt County |
27 | 7 | 0 | |
|
Ranch at Coulter Creek HOA Garfield County |
27 | 10 | 0 | |
|
Moffat Town of Saguache County |
12 | 11 | 4 | |
|
Mustang Water Authority Montrose County |
0 | 7 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Ethylbenzene, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Ethylbenzene 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.