Walpole Water Dept
PWSID MA4307000 · Walpole, Massachusetts · serves 24,070 people · groundwater source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBA | 16 ppt | — | 3/11/2024 |
| PFBA | 13 ppt | — | 8/14/2023 |
| PFBA | 13 ppt | — | 2/7/2024 |
| PFPeA | 12 ppt | — | 8/14/2023 |
| PFPeA | 12 ppt | — | 2/7/2024 |
| PFBA | 8 ppt | — | 8/14/2023 |
| PFHxA | 7 ppt | — | 8/14/2023 |
| PFHxA | 7 ppt | — | 2/7/2024 |
| PFOA | 4 ppt | 4 ppt | 8/14/2023 |
| PFOS | 4 ppt | 4 ppt | 8/14/2023 |
| PFOA | 4 ppt | 4 ppt | 2/7/2024 |
| PFOS | 4 ppt | 4 ppt | 2/7/2024 |
| PFHpA | 3 ppt | — | 8/14/2023 |
| PFHpA | 3 ppt | — | 2/7/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-11-01 | TTHM | MR | No | Archived |
| 2025-11-01 | Total Haloacetic Acids (HAA5) | MR | No | Archived |