PFAS above EPA’s limits in Virginia.
The short answer
12 utilities serving 1.8 million people, as they report it, had a location averaging above a limit, most often PFOA (8) and PFOS (7). The largest is Fairfax County Water Authority, whose highest PFOA average was 4.6 ppt, 1.2 times the limit. The furthest above is Bealeton Regional, at 5.8 times the PFOA 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 |
|---|---|---|---|---|---|
| Fairfax County Water Authority | Herndon | 1,121,613 | PFOA | PFOA 4.6 ppt1.2 times the limit | 7.4 ppt |
| Western Virginia Water Authority | Roanoke City | 182,700 | PFOS | PFOS 4.8 ppt1.2 times the limit | 6.3 ppt |
| Pwcsa - East | Woodbridge | 168,747 | PFOA | PFOA 5.0 ppt1.3 times the limit | 7.9 ppt |
| Stafford County Utilities | Stafford | 123,684 | PFOS | PFOS 5.2 ppt1.3 times the limit | 5.7 ppt |
| Dale City | Woodbridge | 72,062 | PFOA | PFOA 4.4 ppt1.09 times the limit | 7.1 ppt |
| Fort Belvoir | Fort Belvoir | 39,303 | PFOA | PFOA 4.5 ppt1.1 times the limit | 7.7 ppt |
| Town of Purcellville | Purcellville | 8,929 | PFOA | PFOA 10 ppt2.6 times the limit | 11 ppt |
| New Baltimore Regional | Warrenton | 8,818 | PFOS | PFOS 12 ppt2.9 times the limit | 12 ppt |
| Quantico McB - Camp Barrett | Quantico | 8,689 | PFOS | PFOS 5.7 ppt1.4 times the limit | 6.5 ppt |
| Ncsa - Wintergreen | Lovingston | 6,861 | PFOA, PFOS | PFOS 12 ppt2.9 times the limit | 13 ppt |
| Town of Round Hill | Round Hill | 5,055 | PFOA, PFOS | PFOS 8.3 ppt2.1 times the limit | 8.8 ppt |
| Bealeton Regional | Warrenton | 4,250 | PFOA, PFOS | PFOA 23 ppt5.8 times the limit | 45 ppt |
6 more utilities in Virginia had a single sample above a limit but no location average above, so they are not listed; each report shows the sample.
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
- Fairfax County 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