Stoughton Water Department
PWSID MA4285000 · Stoughton, Massachusetts · serves 29,281 people · surface water source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOA | 7.7 ppt | 4 ppt | 2/10/2026 |
| PFOA | 7.3 ppt | 4 ppt | 9/4/2025 |
| PFOA | 7.2 ppt | 4 ppt | 2/10/2026 |
| PFOS | 7.1 ppt | 4 ppt | 2/10/2026 |
| PFOA | 6.6 ppt | 4 ppt | 2/10/2026 |
| PFOS | 6.3 ppt | 4 ppt | 9/4/2025 |
| PFOA | 5.9 ppt | 4 ppt | 9/4/2025 |
| PFOA | 5.9 ppt | 4 ppt | 9/4/2025 |
| PFHxA | 5.5 ppt | — | 2/10/2026 |
| PFOA | 5.1 ppt | 4 ppt | 9/4/2025 |
| PFOS | 5 ppt | 4 ppt | 2/10/2026 |
| PFHxA | 5 ppt | — | 9/4/2025 |
| PFPeA | 4.9 ppt | — | 2/10/2026 |
| PFOS | 4.8 ppt | 4 ppt | 9/4/2025 |
| PFHxA | 4.5 ppt | — | 2/10/2026 |
| PFHxA | 4.3 ppt | — | 9/4/2025 |
| PFOS | 4.1 ppt | 4 ppt | 9/4/2025 |
| PFPeA | 3.9 ppt | — | 9/4/2025 |
| PFBS | 3.9 ppt | — | 2/10/2026 |
| PFBS | 3.8 ppt | — | 2/10/2026 |
| PFPeA | 3.7 ppt | — | 2/10/2026 |
| PFBS | 3.5 ppt | — | 2/10/2026 |
| PFPeA | 3.4 ppt | — | 9/4/2025 |
| PFBS | 3.2 ppt | — | 9/4/2025 |
| PFBS | 3.1 ppt | — | 9/4/2025 |
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 | TTHM | MR | No | Archived |
| 2025-01-01 | Nitrate | MR | No | Archived |