Yarmouth Water Department
PWSID MA4351000 · West Yarmouth, Massachusetts · serves 38,900 people · groundwater source
A
Excellent
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 59.4 ppt | — | 7/24/2025 |
| PFHxA | 40.6 ppt | — | 7/24/2025 |
| PFPeA | 30 ppt | — | 1/14/2025 |
| PFHxA | 20.7 ppt | — | 1/14/2025 |
| PFBA | 12.7 ppt | — | 7/24/2025 |
| PFHpA | 7.7 ppt | — | 7/24/2025 |
| PFHxA | 6.9 ppt | — | 1/22/2025 |
| PFPeA | 6.2 ppt | — | 1/22/2025 |
| PFBA | 6 ppt | — | 1/14/2025 |
| PFHxA | 5 ppt | — | 7/23/2025 |
| PFPeA | 4.1 ppt | — | 7/29/2025 |
| PFPeA | 4 ppt | — | 7/23/2025 |
| PFHpA | 3.4 ppt | — | 1/14/2025 |
| PFHxA | 3.2 ppt | — | 7/29/2025 |
| PFHxS | 3.1 ppt | 10 ppt | 1/14/2025 |
| PFHxS | 3.1 ppt | 10 ppt | 7/24/2025 |
| PFHxA | 3 ppt | — | 7/24/2025 |
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. 🎉