PFAS in Colorado Water
Based on EPA UCMR 5 testing of 100 public water systems in Colorado.
See Colorado on the national heatmap100
Systems Tested
100
With PFAS Detected
13
Above EPA Limits
13%
Exceed MCL
Most Commonly Detected PFAS in Colorado
Systems with detections · EPA UCMR 5 (2023–2025)
lithium 93 systems
PFPeA 25 systems
PFBA 25 systems
PFHxA 24 systems
PFBS 24 systems
PFOA 11 systems
Check your Colorado ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Colorado (100)
| Water System ↕ | PWSID | PFAS Detected ↕ | Above MCL ↕ | Risk |
|---|---|---|---|---|
| WIDEFIELD WSD Groundwater | CO0121900 | 9 | 3 | High Risk |
| SNAKE RIVER WD Groundwater | CO0159105 | 7 | 3 | High Risk |
| THORNTON CITY OF Surface Water | CO0101150 | 9 | 2 | High Risk |
| BRIGHTON CITY OF MX | CO0101025 | 8 | 2 | High Risk |
| STONEGATE MD MX | CO0118076 | 7 | 2 | High Risk |
| TODD CREEK VILLAGE MD GU | CO0101157 | 7 | 1 | High Risk |
| PARKER WSD Groundwater | CO0118040 | 6 | 1 | High Risk |
| ARAPAHOE CNTY WWWA Groundwater | CO0203002 | 6 | 1 | High Risk |
| CHEROKEE MD Groundwater | CO0121125 | 5 | 1 | High Risk |
| GUNNISON CITY OF Groundwater | CO0126325 | 4 | 1 | High Risk |
| ROCKY FORD CITY OF Groundwater | CO0145600 | 4 | 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 | 6 | 0 | Moderate |
| COTTONWOOD WSD Surface Water | CO0118020 | 6 | 0 | Moderate |
| AURORA CITY OF Surface Water | CO0103005 | 5 | 0 | Moderate |
| CASTLE PINES NORTH MD Surface Water | CO0118006 | 5 | 0 | Moderate |
| CENTENNIAL WSD Groundwater | CO0118015 | 5 | 0 | Moderate |
| NORTHERN DOUGLAS COUNTY WSD Surface Water | CO0118016 | 5 | 0 | Moderate |
| PINERY WWD Groundwater | CO0118025 | 5 | 0 | Moderate |
| STRATMOOR HILLS WSD GU | CO0121800 | 5 | 0 | Moderate |
| LOCHBUIE TOWN OF Groundwater | CO0162486 | 5 | 0 | Moderate |
| SOUTH ADAMS COUNTY WSD Groundwater | CO0101140 | 4 | 0 | Low Level |
| FOUNTAIN CITY OF Groundwater | CO0121275 | 4 | 0 | Low Level |
| SECURITY WSD Groundwater | CO0121775 | 4 | 0 | Low Level |
| CONSOLIDATED MUTUAL MAPLE GROVE Surface Water | CO0130020 | 4 | 0 | Low Level |
| EAST CHERRY CREEK VALLEY WSD Groundwater | CO0103035 | 3 | 0 | Low Level |
| CASTLE ROCK TOWN OF Surface Water | CO0118010 | 3 | 0 | Low Level |
| LAMAR CITY OF Groundwater | CO0150700 | 3 | 0 | Low Level |
| SILVERTHORNE TOWN OF Groundwater | CO0159095 | 3 | 0 | Low Level |
| DELTA CITY OF Surface Water | CO0115205 | 2 | 0 | Low Level |
| WOODMOOR WSD Surface Water | CO0121950 | 2 | 0 | Low Level |
| MORRISON TOWN OF Surface Water | CO0130085 | 2 | 0 | Low Level |
| CHIPETA WD Surface Water | CO0143176 | 2 | 0 | Low Level |
| SUBURBAN WATER Surface Water | CO0143515 | 2 | 0 | Low Level |
| INVERNESS WSD Surface Water | CO0203012 | 2 | 0 | Low Level |
| FEDERAL HEIGHTS CITY OF Groundwater | CO0101055 | 1 | 0 | Low Level |
| NORTHGLENN CITY OF Surface Water | CO0101115 | 1 | 0 | Low Level |
| WESTMINSTER CITY OF Surface Water | CO0101170 | 1 | 0 | Low Level |
| ALAMOSA CITY OF Groundwater | CO0102100 | 1 | 0 | Low Level |
| PAGOSA AREA WSD Surface Water | CO0104300 | 1 | 0 | Low Level |
| NAVAJO RIVER RANCH POA GU | CO0104533 | 1 | 0 | Low Level |
| SALIDA CITY OF Groundwater | CO0108700 | 1 | 0 | Low Level |
| DENVER WATER BOARD Surface Water | CO0116001 | 1 | 0 | Low Level |
| CASTLE PINES VILLAGE MD Groundwater | CO0118005 | 1 | 0 | Low Level |
| PERRY PARK WSD Groundwater | CO0118045 | 1 | 0 | Low Level |
| ROXBOROUGH WSD Surface Water | CO0118055 | 1 | 0 | Low Level |
| TWO RIVERS VILLAGE Groundwater | CO0119720 | 1 | 0 | Low Level |
| EAGLE RIVER WSD Groundwater | CO0119802 | 1 | 0 | Low Level |
| COLORADO CENTRE MD Groundwater | CO0121140 | 1 | 0 | Low Level |
| COLORADO SPRINGS UTILITIES Surface Water | CO0121150 | 1 | 0 | Low Level |
| DONALA WSD Groundwater | CO0121175 | 1 | 0 | Low Level |
| MERIDIAN SERVICE MD Groundwater | CO0121455 | 1 | 0 | Low Level |
| MONUMENT TOWN OF Groundwater | CO0121475 | 1 | 0 | Low Level |
| TRIVIEW MD Groundwater | CO0121840 | 1 | 0 | Low Level |
| WOODMEN HILLS MD Groundwater | CO0121930 | 1 | 0 | Low Level |
| CANON CITY CITY OF Surface Water | CO0122100 | 1 | 0 | Low Level |
| PARK CENTER WD Surface Water | CO0122600 | 1 | 0 | Low Level |
| BATTLEMENT MESA MD Surface Water | CO0123133 | 1 | 0 | Low Level |
| CARBONDALE TOWN OF GU | CO0123167 | 1 | 0 | Low Level |
| RIFLE CITY OF Surface Water | CO0123676 | 1 | 0 | Low Level |
| BLACK HAWK CITY OF Surface Water | CO0124147 | 1 | 0 | Low Level |
| GRAND COUNTY WATER NO 1 Surface Water | CO0125323 | 1 | 0 | Low Level |
| ARVADA CITY OF Surface Water | CO0130001 | 1 | 0 | Low Level |
| GOLDEN CITY OF Surface Water | CO0130040 | 1 | 0 | Low Level |
| CONSOLIDATED MUTUAL WATER COMPANY Surface Water | CO0130145 | 1 | 0 | Low Level |
| GOLDEN TERRACE WEST Surface Water | CO0130319 | 1 | 0 | Low Level |
| BURLINGTON CITY OF Groundwater | CO0132005 | 1 | 0 | Low Level |
| DURANGO CITY OF Surface Water | CO0134150 | 1 | 0 | Low Level |
| BERTHOUD TOWN OF Surface Water | CO0135138 | 1 | 0 | Low Level |
| NORTHERN COLORADO WA Groundwater | CO0135554 | 1 | 0 | Low Level |
| WELLINGTON TOWN OF Surface Water | CO0135838 | 1 | 0 | Low Level |
| LIMON TOWN OF Groundwater | CO0137015 | 1 | 0 | Low Level |
| STERLING CITY OF GU | CO0138045 | 1 | 0 | Low Level |
| CLIFTON WD Surface Water | CO0139180 | 1 | 0 | Low Level |
| CREEDE CITY OF Groundwater | CO0140500 | 1 | 0 | Low Level |
| CRAIG CITY OF Surface Water | CO0141188 | 1 | 0 | Low Level |
| CORTEZ CITY OF Surface Water | CO0142200 | 1 | 0 | Low Level |
| DOLORES TOWN OF Surface Water | CO0142400 | 1 | 0 | Low Level |
| MONTEZUMA WC Surface Water | CO0142900 | 1 | 0 | Low Level |
| MENOKEN WD Surface Water | CO0143506 | 1 | 0 | Low Level |
| MONTROSE CITY OF Surface Water | CO0143518 | 1 | 0 | Low Level |
| TRI COUNTY WCD Surface Water | CO0143755 | 1 | 0 | Low Level |
| BRUSH CITY OF Groundwater | CO0144001 | 1 | 0 | Low Level |
| MORGAN COUNTY QUALITY WD Groundwater | CO0144020 | 1 | 0 | Low Level |
| LA JUNTA CITY OF Groundwater | CO0145420 | 1 | 0 | Low Level |
| PATTERSON VALLEY WC Groundwater | CO0145540 | 1 | 0 | Low Level |
| NORTH HOLBROOK WC Groundwater | CO0145630 | 1 | 0 | Low Level |
| PUEBLO BOARD OF WW Surface Water | CO0151500 | 1 | 0 | Low Level |
| PUEBLO WEST MD Surface Water | CO0151650 | 1 | 0 | Low Level |
| ST CHARLES MESA WD GU | CO0151750 | 1 | 0 | Low Level |
| HAYDEN TOWN OF Surface Water | CO0154333 | 1 | 0 | Low Level |
| WOODLAND PARK CITY OF Surface Water | CO0160900 | 1 | 0 | Low Level |
| GREELEY CITY OF Surface Water | CO0162321 | 1 | 0 | Low Level |
| NORTH WELD COUNTY WD Surface Water | CO0162553 | 1 | 0 | Low Level |
| YUMA CITY OF Groundwater | CO0163020 | 1 | 0 | Low Level |
| MERIDIAN MD Surface Water | CO0218015 | 1 | 0 | Low Level |
| US DEPARTMENT OF THE ARMY FORT CARSON Surface Water | CO0221445 | 1 | 0 | Low Level |
| PAINT BRUSH HILLS Groundwater | CO0221690 | 1 | 0 | Low Level |
| CSU FOOTHILLS CAMPUS Surface Water | CO0235182 | 1 | 0 | Low Level |
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