Fairfax County Water Authority
PWSID VA6059501 · Herndon, Virginia · serves 1,121,613 people · surface water source
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Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 21.5 ppt | — | 9/10/2024 |
| PFPeA | 17.7 ppt | — | 12/17/2024 |
| PFBA | 17.6 ppt | — | 12/17/2024 |
| PFBA | 17.5 ppt | — | 9/10/2024 |
| PFHxA | 17.1 ppt | — | 9/10/2024 |
| PFHxA | 13.6 ppt | — | 12/17/2024 |
| PFPeA | 10.7 ppt | — | 6/11/2024 |
| 6:2 FTS | 10.1 ppt | — | 4/23/2024 |
| 6:2 FTS | 9.6 ppt | — | 4/23/2024 |
| PFHxA | 9.6 ppt | — | 6/11/2024 |
| PFBA | 9.6 ppt | — | 6/11/2024 |
| 6:2 FTS | 9.2 ppt | — | 4/23/2024 |
| 6:2 FTS | 9.1 ppt | — | 4/23/2024 |
| PFBS | 8.1 ppt | — | 9/10/2024 |
| PFOA | 7.4 ppt | 4 ppt | 9/10/2024 |
| PFBS | 7 ppt | — | 12/17/2024 |
| PFPeA | 6.3 ppt | — | 4/23/2024 |
| PFOA | 6.1 ppt | 4 ppt | 12/17/2024 |
| PFHxA | 5.7 ppt | — | 4/23/2024 |
| PFOS | 5.7 ppt | 4 ppt | 9/10/2024 |
| PFHpA | 5.6 ppt | — | 9/10/2024 |
| PFBS | 5.1 ppt | — | 6/11/2024 |
| PFOA | 5 ppt | 4 ppt | 6/11/2024 |
| PFHpA | 4.9 ppt | — | 12/17/2024 |
| PFPeA | 4.8 ppt | — | 9/10/2024 |
| PFPeA | 4.7 ppt | — | 4/23/2024 |
| PFOS | 4.7 ppt | 4 ppt | 6/11/2024 |
| PFHxA | 4.5 ppt | — | 4/23/2024 |
| PFPeA | 4.4 ppt | — | 4/23/2024 |
| PFHxA | 4.3 ppt | — | 4/23/2024 |
| PFHxA | 4.3 ppt | — | 4/23/2024 |
| PFPeA | 4.2 ppt | — | 4/23/2024 |
| PFPeA | 4.2 ppt | — | 4/23/2024 |
| PFHxA | 4.1 ppt | — | 4/23/2024 |
| PFHxA | 4 ppt | — | 9/10/2024 |
| PFHpA | 3.9 ppt | — | 6/11/2024 |
| PFBS | 3.6 ppt | — | 4/23/2024 |
| PFBS | 3.4 ppt | — | 9/10/2024 |
| PFPeA | 3.2 ppt | — | 9/30/2024 |
| PFHxA | 3 ppt | — | 9/30/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
No violations on record in the period covered. 🎉