Aldicarb Sulfone violations in Colorado
21 active public water systems in Colorado had a Aldicarb Sulfone violation in the past three years, 1 of them in the latest quarter of EPA's data. What Aldicarb Sulfone is and why it matters.
Systems with a Aldicarb Sulfone violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Chemical Materials Activity West Pueblo County |
3,000 | 8 | 0 | |
|
Denver Water Board Denver County |
1,287,000 | 3 | 0 | |
|
Rifle City of Garfield County |
9,489 | 2 | 0 | |
|
Palisade Town of Mesa County |
3,060 | 1 | 0 | |
|
Rangely Town of Rio Blanco County |
2,495 | 3 | 0 | |
|
Divide Water Providers INC Teller County |
570 | 1 | 0 | |
|
Granada Town of Prowers County |
515 | 12 | 1 | |
|
Mitchell Cooper Ditch Pipeline Garfield County |
415 | 4 | 0 | |
|
Sierra Grande School District Costilla County |
304 | 7 | 0 | |
|
Jamestown Town of Boulder County |
280 | 7 | 1 | |
|
Roaring Fork MHP Pitkin County |
200 | 10 | 0 | |
|
Altman Plants El Paso County |
188 | 8 | 1 | |
|
Kim Town of Las Animas County |
116 | 6 | 4 | |
|
Ridgewood WD Teller County |
84 | 5 | 0 | |
|
South Fork Heights Apartments Rio Grande County |
80 | 10 | 3 | |
|
Sunshine Mesa Domestic WC Delta County |
76 | 5 | 0 | |
|
Gateway School Mesa County |
75 | 1 | 0 | |
|
Timberline Lodge Grand County |
68 | 3 | 0 | |
|
Peaks Shadow LLC El Paso County |
67 | 5 | 1 | |
|
Holbrook Center Soft WA Otero County |
54 | 6 | 1 | |
|
Ranch at Coulter Creek HOA Garfield County |
27 | 10 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Aldicarb Sulfone, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Aldicarb Sulfone 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.