Colorado tap water quality
PFAS results for 165 Colorado water systems from EPA's latest nationwide testing. Enter your address for your own utility's record and a filter recommendation.
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165systems tested
24%had PFAS detected
13over EPA's 4 ppt limit
Highest PFAS levels in Colorado
| Water system | Max PFOA (ppt) | Max PFOS (ppt) |
|---|---|---|
| Snake River WD | 5.8 | 22 |
| Widefield Wsd | 10.5 | 15.8 |
| City of Brighton | 5.3 | 10.6 |
| Town of Mountain Village | — | 7.5 |
| City of Thornton | 7.1 | 5 |
| Todd Creek Village MD | — | 6.8 |
| Cherokee MD | 6.1 | — |
| Stonegate MD | 5.6 | 5.1 |
| Little Thompson WD | 4.8 | — |
| Parker Wsd | 4.8 | — |
All Colorado water systems
- Arapahoe Cnty Wwwa ⚠
- Broomfield City and County of
- Centennial Wsd
- Cherokee MD ⚠
- City of Arvada
- City of Aspen
- City of Aurora
- City of Black Hawk
- City of Boulder
- City of Brighton ⚠
- City of Canon City
- City of Durango
- City of Englewood
- City of Evans
- City of Federal Heights
- City of Fountain
- City of Ft Collins
- City of Ft Morgan
- City of Golden
- City of Grand Junction
- City of Greeley
- City of Lafayette
- City of Longmont
- City of Louisville
- City of Loveland
- City of Montrose
- City of Northglenn
- City of Sterling
- City of Thornton ⚠
- City of Trinidad
- City of Westminster
- Clifton WD
- Colorado Springs Utilities
- Consolidated Mutual Maple Grove
- Consolidated Mutual Water Company
- Cottonwood Wsd
- Csu Main and West Housing Campus
- Denver Water Board
- Eagle River Wsd
- East Cherry Creek Valley Wsd
- East Larimer County WD
- Evergreen MD
- Ft Collins Loveland WD
- Left Hand WD
- Little Thompson WD ⚠
- Meridian MD
- Montezuma Wc
- Mt Werner WD
- North Weld County WD
- Pagosa Area Wsd
- Parker Wsd ⚠
- Pinery Wwd
- Pueblo Board of Ww
- Pueblo West MD
- Roxborough Wsd
- Security Wsd
- South Adams County Wsd
- Stonegate MD ⚠
- Superior MD No 1
- Town of Breckenridge
- Town of Castle Rock
- Town of Erie
- Town of Estes Park
- Town of Firestone
- Town of Johnstown
- Town of Windsor
- Tri County Wcd
- Us Air Force Academy
- Us Department of the Army Fort Carson
- Ute Wcd
- Widefield Wsd ⚠
- Woodmoor Wsd
- Advenir French Quarter
- Battlement Mesa MD
- Castle Pines North MD
- Castle Pines Village MD
- Central Weld Cnty WD
- Chipeta WD
- City of Alamosa
- City of Brush
- City of Burlington
- City of Central City
- City of Cortez
- City of Craig
- City of Creede
- City of Dacono
- City of Delta
- City of Florence
- City of Ft Lupton
- City of Glenwood Springs
- City of Gunnison ⚠
- City of Idaho Springs
- City of La Junta
- City of Lamar
- City of Manitou Springs
- City of Monte Vista
- City of Rifle
- City of Rocky Ford ⚠
- City of Salida
- City of Steamboat Springs
- City of Woodland Park
- City of Yuma
- Clock Tower Center
- Colorado Centre MD
- Copper Mountain Consolidated MD
- Crawford Mesa Wa
- Csu Foothills Campus
- Csu South Campus
- Donala Wsd
- Eldora Mountain Resort
- Genesee Wsd
- Golden Terrace West
- Grand County Water No 1
- Inverness Wsd
- Menoken WD
- Meridian Service MD
- Mid Valley MD
- Morgan County Quality WD
- Navajo River Ranch Poa
- North Holbrook Wc
- North Table Mountain Wsd
- Northern Colorado Wa
- Northern Douglas County Wsd
- Paint Brush Hills
- Park Center WD
- Parkville WD
- Patterson Valley Wc
- Perry Park Wsd
- Snake River WD ⚠
- Snowmass Village Wsd
- St Charles Mesa WD
- Stratmoor Hills Wsd
- Suburban Water
- Todd Creek Village MD ⚠
- Town of Antonito
- Town of Berthoud
- Town of Buena Vista
- Town of Carbondale
- Town of Dolores
- Town of Eagle
- Town of Eaton
- Town of Frederick
- Town of Frisco
- Town of Gypsum
- Town of Hayden
- Town of Hudson
- Town of Limon
- Town of Lochbuie
- Town of Milliken
- Town of Monument
- Town of Morrison
- Town of Mountain Village ⚠
- Town of New Castle
- Town of Severance
- Town of Silverthorne
- Town of Telluride
- Town of Wellington
- Triview MD
- Two Rivers Village
- Vail Assoc Midvail Eagle
- West Fort Collins WD
- Winter Park Wsd
- Woodmen Hills MD
- Ymca Rockies Wind River
- Ymca Snow Mtn Ranch
Questions
Does Colorado tap water have PFAS?
In EPA's UCMR 5 testing, 39 of 165 Colorado water systems (24%) had at least one PFAS compound detected, and 13 had PFOA or PFOS above EPA's 4 ppt limit.
What is the best water filter in Colorado?
It depends on your utility. Where PFAS is above EPA's limit, reverse osmosis is the most effective option. Where the main concern is lead from home plumbing or chlorine taste, a certified carbon filter is enough. Enter your address to get a match.