PFAS in Colorado Water
Based on EPA UCMR 5 testing of 38 public water systems in Colorado.
See Colorado on the national heatmap38
Systems Tested
38
With PFAS Detected
13
Above EPA Limits
34%
Exceed MCL
Most Commonly Detected PFAS in Colorado
Systems with detections · EPA UCMR 5 (2023–2025)
PFPeA 25 systems
PFBA 25 systems
PFHxA 24 systems
PFBS 24 systems
PFOA 11 systems
PFHxS 10 systems
Check your Colorado ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Colorado (38)
Click any row to see ZIP-level details| Water System | PWSID | PFAS Detected | Above MCL | Risk |
|---|---|---|---|---|
| WIDEFIELD WSD Groundwater | CO0121900 | 8 | 3 | High Risk |
| SNAKE RIVER WD Groundwater | CO0159105 | 7 | 3 | High Risk |
| THORNTON CITY OF Surface Water | CO0101150 | 8 | 2 | High Risk |
| BRIGHTON CITY OF MX | CO0101025 | 7 | 2 | High Risk |
| STONEGATE MD MX | CO0118076 | 6 | 2 | High Risk |
| TODD CREEK VILLAGE MD GU | CO0101157 | 6 | 1 | High Risk |
| PARKER WSD Surface Water | CO0118040 | 5 | 1 | High Risk |
| ARAPAHOE CNTY WWWA Groundwater | CO0203002 | 5 | 1 | High Risk |
| CHEROKEE MD Groundwater | CO0121125 | 4 | 1 | High Risk |
| GUNNISON CITY OF Groundwater | CO0126325 | 4 | 1 | High Risk |
| ROCKY FORD CITY OF Groundwater | CO0145600 | 3 | 1 | High Risk |
| MOUNTAIN VILLAGE TOWN OF Groundwater | CO0157400 | 2 | 1 | High Risk |
| LITTLE THOMPSON WD Surface Water | CO0135477 | 1 | 1 | High Risk |
| ENGLEWOOD CITY OF Surface Water | CO0103045 | 5 | 0 | Moderate |
| COTTONWOOD WSD Surface Water | CO0118020 | 5 | 0 | Moderate |
| AURORA CITY OF Surface Water | CO0103005 | 4 | 0 | Low Level |
| CASTLE PINES NORTH MD Surface Water | CO0118006 | 4 | 0 | Low Level |
| CENTENNIAL WSD Surface Water | CO0118015 | 4 | 0 | Low Level |
| NORTHERN DOUGLAS COUNTY WSD Surface Water | CO0118016 | 4 | 0 | Low Level |
| PINERY WWD Groundwater | CO0118025 | 4 | 0 | Low Level |
| STRATMOOR HILLS WSD GU | CO0121800 | 4 | 0 | Low Level |
| LOCHBUIE TOWN OF Groundwater | CO0162486 | 4 | 0 | Low Level |
| SOUTH ADAMS COUNTY WSD Groundwater | CO0101140 | 3 | 0 | Low Level |
| FOUNTAIN CITY OF Groundwater | CO0121275 | 3 | 0 | Low Level |
| SECURITY WSD Groundwater | CO0121775 | 3 | 0 | Low Level |
| CONSOLIDATED MUTUAL MAPLE GROVE Surface Water | CO0130020 | 3 | 0 | Low Level |
| EAST CHERRY CREEK VALLEY WSD Groundwater | CO0103035 | 2 | 0 | Low Level |
| CASTLE ROCK TOWN OF Surface Water | CO0118010 | 2 | 0 | Low Level |
| MORRISON TOWN OF Surface Water | CO0130085 | 2 | 0 | Low Level |
| LAMAR CITY OF Groundwater | CO0150700 | 2 | 0 | Low Level |
| SILVERTHORNE TOWN OF Groundwater | CO0159095 | 2 | 0 | Low Level |
| DELTA CITY OF Surface Water | CO0115205 | 1 | 0 | Low Level |
| WOODMOOR WSD Surface Water | CO0121950 | 1 | 0 | Low Level |
| GRAND COUNTY WATER NO 1 Surface Water | CO0125323 | 1 | 0 | Low Level |
| CHIPETA WD Surface Water | CO0143176 | 1 | 0 | Low Level |
| SUBURBAN WATER Surface Water | CO0143515 | 1 | 0 | Low Level |
| INVERNESS WSD Surface Water | CO0203012 | 1 | 0 | Low Level |
| CSU FOOTHILLS CAMPUS Surface Water | CO0235182 | 1 | 0 | Low Level |