Sudbury Water District
PWSID MA3288000 · Sudbury, Massachusetts · serves 18,416 people · groundwater source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOA | 9 ppt | 4 ppt | 6/6/2025 |
| PFOA | 8 ppt | 4 ppt | 12/6/2024 |
| PFOA | 8 ppt | 4 ppt | 6/6/2025 |
| PFOA | 8 ppt | 4 ppt | 12/6/2024 |
| PFOA | 7 ppt | 4 ppt | 6/6/2025 |
| PFOA | 6 ppt | 4 ppt | 12/6/2024 |
| PFHxA | 6 ppt | — | 12/6/2024 |
| PFHxA | 6 ppt | — | 6/6/2025 |
| PFPeA | 5 ppt | — | 12/6/2024 |
| PFHxA | 5 ppt | — | 12/6/2024 |
| PFHxA | 5 ppt | — | 6/6/2025 |
| PFPeA | 5 ppt | — | 6/6/2025 |
| PFBA | 5 ppt | — | 12/6/2024 |
| PFHxA | 5 ppt | — | 12/6/2024 |
| PFHxA | 5 ppt | — | 6/6/2025 |
| PFBA | 5 ppt | — | 6/6/2025 |
| PFPeA | 5 ppt | — | 12/6/2024 |
| PFPeA | 5 ppt | — | 6/6/2025 |
| PFBS | 4 ppt | — | 12/6/2024 |
| PFBS | 4 ppt | — | 6/6/2025 |
| PFBS | 4 ppt | — | 12/6/2024 |
| PFPeA | 4 ppt | — | 12/6/2024 |
| PFBS | 4 ppt | — | 6/6/2025 |
| PFPeA | 4 ppt | — | 6/6/2025 |
| PFHpA | 3 ppt | — | 12/6/2024 |
| PFBS | 3 ppt | — | 12/6/2024 |
| PFBS | 3 ppt | — | 6/6/2025 |
| PFHpA | 3 ppt | — | 6/6/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-08-01 | Revised Total Coliform Rule | RPT | No | Addressed |
| 2022-06-01 | Lead and Copper Rule | MR | No | Addressed |