Hopkinton Water Department
PWSID MA2139000 · Hopkinton, Massachusetts · serves 12,680 people · groundwater source
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Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOA | 7.2 ppt | 4 ppt | 8/18/2025 |
| PFBA | 6.2 ppt | — | 8/18/2025 |
| PFOA | 6.1 ppt | 4 ppt | 2/11/2025 |
| PFPeA | 5.8 ppt | — | 8/18/2025 |
| PFBS | 5.5 ppt | — | 2/11/2025 |
| PFHxA | 4.6 ppt | — | 8/18/2025 |
| PFOA | 4 ppt | 4 ppt | 2/11/2025 |
| PFPeA | 3.8 ppt | — | 2/11/2025 |
| PFBS | 3.8 ppt | — | 8/18/2025 |
| PFBS | 3.5 ppt | — | 8/18/2025 |
| PFHxA | 3.4 ppt | — | 2/11/2025 |
| PFHxA | 3.4 ppt | — | 2/11/2025 |
| PFBS | 3.3 ppt | — | 2/11/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
No violations on record in the period covered. 🎉