Concord Water Dept
PWSID MA3067000 · Concord, Massachusetts · serves 18,788 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBS | 9.4 ppt | — | 4/11/2024 |
| PFBS | 7.6 ppt | — | 8/12/2024 |
| PFPeA | 6.2 ppt | — | 8/19/2024 |
| PFOA | 6 ppt | 4 ppt | 8/19/2024 |
| PFOA | 5.9 ppt | 4 ppt | 2/12/2024 |
| PFPeA | 5.6 ppt | — | 2/12/2024 |
| PFPeA | 5.2 ppt | — | 4/11/2024 |
| PFHxA | 4.5 ppt | — | 8/19/2024 |
| PFHxA | 4.4 ppt | — | 4/11/2024 |
| PFOA | 4.2 ppt | 4 ppt | 7/17/2024 |
| PFHxA | 4.2 ppt | — | 2/12/2024 |
| PFOA | 4.2 ppt | 4 ppt | 8/12/2024 |
| PFHxA | 3.6 ppt | — | 8/12/2024 |
| PFHxA | 3.5 ppt | — | 8/12/2024 |
| PFPeA | 3.5 ppt | — | 8/12/2024 |
| PFBS | 3.1 ppt | — | 8/19/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2022-07-01 | Bromate | MCL | Yes | Resolved |