North Wales Water Authority
PWSID PA1460048 · North Wales, Pennsylvania · serves 72,496 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOA | 13 ppt | 4 ppt | 8/14/2024 |
| PFOA | 11.4 ppt | 4 ppt | 2/11/2025 |
| PFOA | 11.3 ppt | 4 ppt | 8/14/2024 |
| PFOS | 11.1 ppt | 4 ppt | 8/14/2024 |
| PFOS | 10.8 ppt | 4 ppt | 2/11/2025 |
| PFOS | 10.4 ppt | 4 ppt | 8/14/2024 |
| PFOA | 10 ppt | 4 ppt | 8/14/2024 |
| PFOS | 9.5 ppt | 4 ppt | 8/14/2024 |
| PFOS | 9.5 ppt | 4 ppt | 2/11/2025 |
| PFPeA | 9.3 ppt | — | 8/14/2024 |
| PFOA | 9.1 ppt | 4 ppt | 8/14/2024 |
| PFPeA | 9 ppt | — | 8/14/2024 |
| PFOA | 8.3 ppt | 4 ppt | 2/11/2025 |
| PFOA | 8.2 ppt | 4 ppt | 2/11/2025 |
| PFHxA | 8.1 ppt | — | 8/14/2024 |
| PFOA | 7.9 ppt | 4 ppt | 8/14/2024 |
| PFOS | 7.8 ppt | 4 ppt | 8/14/2024 |
| PFOA | 7.7 ppt | 4 ppt | 2/11/2025 |
| PFOA | 7.5 ppt | 4 ppt | 3/19/2025 |
| PFPeA | 7.4 ppt | — | 8/14/2024 |
| PFPeA | 7 ppt | — | 2/11/2025 |
| PFBA | 6.8 ppt | — | 8/14/2024 |
| PFBS | 6.4 ppt | — | 8/14/2024 |
| PFBS | 6.3 ppt | — | 2/11/2025 |
| PFOS | 6.2 ppt | 4 ppt | 8/14/2024 |
| PFHxA | 6.2 ppt | — | 2/11/2025 |
| PFBS | 6.1 ppt | — | 8/14/2024 |
| PFBS | 6 ppt | — | 8/14/2024 |
| PFHxA | 6 ppt | — | 8/14/2024 |
| PFOS | 5.9 ppt | 4 ppt | 2/11/2025 |
| PFHpA | 5.8 ppt | — | 8/14/2024 |
| PFHxA | 5.8 ppt | — | 8/14/2024 |
| PFOS | 5.7 ppt | 4 ppt | 2/11/2025 |
| PFPeA | 5.7 ppt | — | 2/11/2025 |
| PFBA | 5.7 ppt | — | 8/14/2024 |
| PFBA | 5.7 ppt | — | 2/11/2025 |
| PFOA | 5.6 ppt | 4 ppt | 2/11/2025 |
| PFNA | 5.6 ppt | 10 ppt | 8/14/2024 |
| PFBS | 5.5 ppt | — | 2/11/2025 |
| PFHxA | 5.5 ppt | — | 3/19/2025 |
| PFOA | 5.4 ppt | 4 ppt | 8/14/2024 |
| PFPeA | 5.3 ppt | — | 3/19/2025 |
| PFOS | 5.2 ppt | 4 ppt | 8/14/2024 |
| PFHxA | 5.2 ppt | — | 8/14/2024 |
| PFBS | 5.2 ppt | — | 8/14/2024 |
| PFOS | 5 ppt | 4 ppt | 3/19/2025 |
| PFHxA | 4.9 ppt | — | 2/11/2025 |
| PFHxA | 4.8 ppt | — | 2/11/2025 |
| PFBS | 4.8 ppt | — | 3/19/2025 |
| PFHxA | 4.5 ppt | — | 8/14/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-04-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2025-03-01 | Groundwater Rule | MR | No | Resolved |
| 2022-07-01 | Groundwater Rule | MR | No | Resolved |
| 2022-04-01 | Groundwater Rule | MR | No | Resolved |