Derry Boro Muni Auth
PWSID PA5650049 · Derry, Pennsylvania · serves 6,500 people · surface water source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBS | 15 ppt | — | 11/20/2023 |
| PFBS | 10.2 ppt | — | 8/22/2023 |
| PFBS | 5.7 ppt | — | 5/16/2023 |
| PFBS | 5.1 ppt | — | 2/20/2023 |
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 | Revised Total Coliform Rule | MON | No | Resolved |
| 2024-10-01 | TTHM | MR | No | Resolved |
| 2024-10-01 | CARBON, TOTAL | MR | No | Resolved |
| 2022-10-01 | CARBON, TOTAL | MR | No | Resolved |
| 2022-09-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2022-01-01 | CYANIDE | MR | No | Resolved |