PFAS above EPA’s limits in Nevada.
The short answer
3 utilities serving 488,064 people, as they report it, had a location averaging above a limit, most often PFOS (3) and PFOA (2). The largest is Truckee Meadows Water Authority, whose highest PFOS average was 13 ppt, 3.3 times the limit. The furthest above is City of Elko, at 7.3 times the PFOS limit.
These are EPA’s survey results, not violations: the limits take effect April 26, 2029, and compliance will rest on each utility’s own monitoring. EPA has proposed changes to the rule; as of Oct. 13, 2026, none is final.
Utilities above a limit
Largest first. Each one’s highest location average is for the limit it is furthest above, with the single highest sample of the same PFAS; its report has every result.
| Utility | Based in | Serves | Above | Highest location average | Highest single sample |
|---|---|---|---|---|---|
| Truckee Meadows Water Authority | Reno | 442,000 | PFOA, PFOS | PFOS 13 ppt3.3 times the limit | 20 ppt |
| Fernley Public Works | Fernley | 23,064 | PFOS | PFOS 5.0 ppt1.3 times the limit | 5.6 ppt |
| City of Elko | Elko | 23,000 | PFOA, PFOS, PFHxS, Hazard Index | PFOS 29 ppt7.3 times the limit | 46 ppt |
Results: EPA UCMR 5 occurrence data, file of Oct. 15, 2026, samples from Jan. 3, 2023 to June 17, 2026, averaged by sampling location as EPA’s final UCMR 5 data summary does. Every state, and the full data as a CSV; how this list is made. People served is what each utility reports.
Where to go next
- Truckee Meadows Water Authority’s reportEvery PFAS result with its dates, and the certification claim that handles each.Open the report
- Every stateThe national list, the largest utilities above a limit, and the data to download.PFAS above EPA’s limits
- Filters certified for PFASRanked by certification and what they cost over five years.Best water filters for PFAS