PFAS in Wyoming Water
Based on EPA UCMR 5 testing of 18 public water systems in Wyoming.
See Wyoming on the national heatmap18
Systems Tested
18
With PFAS Detected
1
Above EPA Limits
6%
Exceed MCL
Most Commonly Detected PFAS in Wyoming
Systems with detections · EPA UCMR 5 (2023–2025)
lithium 18 systems
PFHxS 2 systems
PFBA 2 systems
PFOS 1 system
PFHxA 1 system
PFPeA 1 system
Check your Wyoming ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Wyoming (18)
| Water System ↕ | PWSID | PFAS Detected ↕ | Above MCL ↕ | Risk |
|---|---|---|---|---|
| RIVERTON, CITY OF Groundwater | WY5600047 | 9 | 2 | High Risk |
| DOUGLAS, CITY OF Groundwater | WY5600137 | 2 | 0 | Low Level |
| JACKSON, TOWN OF Groundwater | WY5600213 | 2 | 0 | Low Level |
| CHEYENNE BOARD OF PUBLIC UTILITIES MX | WY5600011 | 1 | 0 | Low Level |
| GILLETTE, CITY OF Groundwater | WY5600019 | 1 | 0 | Low Level |
| MILLS, TOWN OF GU | WY5600036 | 1 | 0 | Low Level |
| RAWLINS WATER SUPPLY, CITY OF Surface Water | WY5600045 | 1 | 0 | Low Level |
| WARDWELL WATER & SEWER DISTRICT Surface Water | WY5600067 | 1 | 0 | Low Level |
| TORRINGTON MUNICIPAL WS Groundwater | WY5600164 | 1 | 0 | Low Level |
| WHEATLAND, TOWN OF Groundwater | WY5600187 | 1 | 0 | Low Level |
| FIRST FIKE SUBDIVISION Groundwater | WY5600194 | 1 | 0 | Low Level |
| NEWCASTLE, CITY OF Groundwater | WY5600256 | 1 | 0 | Low Level |
| BLACK THUNDER COAL MINE Groundwater | WY5600360 | 1 | 0 | Low Level |
| GREEN RIVER, CITY OF Surface Water | WY5601181 | 1 | 0 | Low Level |
| ROCK SPRINGS, CITY OF Surface Water | WY5601182 | 1 | 0 | Low Level |
| CASPER, CITY OF GU | WY5601415 | 1 | 0 | Low Level |
| YNP-CANYON VILLAGE Surface Water | WY5680074 | 1 | 0 | Low Level |
| YNP-OLD FAITHFUL Surface Water | WY5680085 | 1 | 0 | Low Level |
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