Woonsocket Water Division
PWSID RI1559518 · Woonsocket, Rhode Island · serves 45,828 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 7.5 ppt | — | 7/18/2023 |
| PFBA | 6.7 ppt | — | 7/18/2023 |
| PFOA | 5.8 ppt | 4 ppt | 7/18/2023 |
| PFHxA | 5 ppt | — | 7/18/2023 |
| PFPeA | 4.9 ppt | — | 4/25/2023 |
| PFHxA | 3.9 ppt | — | 4/25/2023 |
| PFHpA | 3.7 ppt | — | 7/18/2023 |
| PFPeA | 3.7 ppt | — | 12/4/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | TTHM | MR | No | Resolved |
| 2025-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2025-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2021-12-01 | Chlorite | MR | No | Resolved |