Philadelphia Water Department
PWSID PA1510001 · Philadelphia, Pennsylvania · serves 1,600,000 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBS | 10 ppt | — | 10/7/2024 |
| PFPeA | 9.9 ppt | — | 8/5/2024 |
| PFPeA | 9.2 ppt | — | 10/7/2024 |
| PFHxA | 9.1 ppt | — | 8/5/2024 |
| PFPeA | 9 ppt | — | 8/5/2024 |
| PFHxA | 9 ppt | — | 10/7/2024 |
| PFPeA | 8.9 ppt | — | 10/7/2024 |
| PFHxA | 8.4 ppt | — | 8/5/2024 |
| PFHxA | 8.4 ppt | — | 10/7/2024 |
| PFBS | 8.4 ppt | — | 10/7/2024 |
| PFOA | 8.1 ppt | 4 ppt | 8/5/2024 |
| PFBA | 7.6 ppt | — | 10/7/2024 |
| PFOA | 7.6 ppt | 4 ppt | 10/7/2024 |
| PFOA | 7.4 ppt | 4 ppt | 8/5/2024 |
| PFOA | 7.4 ppt | 4 ppt | 1/8/2024 |
| PFOA | 7.1 ppt | 4 ppt | 10/7/2024 |
| PFBA | 6.9 ppt | — | 10/7/2024 |
| PFOA | 6.8 ppt | 4 ppt | 4/8/2024 |
| PFBA | 6.8 ppt | — | 8/5/2024 |
| PFBS | 6.6 ppt | — | 8/5/2024 |
| PFBS | 6.5 ppt | — | 8/5/2024 |
| PFBA | 6.2 ppt | — | 8/5/2024 |
| PFOA | 6 ppt | 4 ppt | 4/8/2024 |
| PFOS | 6 ppt | 4 ppt | 8/5/2024 |
| PFHxA | 5.3 ppt | — | 1/8/2024 |
| PFOS | 5.2 ppt | 4 ppt | 8/5/2024 |
| PFPeA | 5.2 ppt | — | 1/8/2024 |
| PFOA | 5 ppt | 4 ppt | 1/8/2024 |
| PFOS | 4.8 ppt | 4 ppt | 1/8/2024 |
| PFOS | 4.7 ppt | 4 ppt | 4/8/2024 |
| PFOS | 4.7 ppt | 4 ppt | 10/7/2024 |
| PFNA | 4.5 ppt | 10 ppt | 8/5/2024 |
| PFOS | 4.5 ppt | 4 ppt | 10/7/2024 |
| PFBS | 4.5 ppt | — | 1/8/2024 |
| PFNA | 4.5 ppt | 10 ppt | 8/5/2024 |
| PFPeA | 4.4 ppt | — | 7/15/2024 |
| PFHxA | 4.4 ppt | — | 4/8/2024 |
| PFHxA | 4.3 ppt | — | 7/15/2024 |
| PFPeA | 4.1 ppt | — | 4/8/2024 |
| PFPeA | 3.9 ppt | — | 10/7/2024 |
| PFBS | 3.9 ppt | — | 1/8/2024 |
| PFHxA | 3.8 ppt | — | 1/8/2024 |
| PFPeA | 3.8 ppt | — | 1/8/2024 |
| PFHxA | 3.6 ppt | — | 10/7/2024 |
| PFBS | 3.6 ppt | — | 4/8/2024 |
| PFHpA | 3.3 ppt | — | 8/5/2024 |
| PFHxA | 3.1 ppt | — | 4/8/2024 |
| PFHpA | 3.1 ppt | — | 10/7/2024 |
| PFHpA | 3 ppt | — | 8/5/2024 |
| PFHpA | 3 ppt | — | 10/7/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2026-03-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Archived |
| 2025-09-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2024-12-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2023-06-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2022-06-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |