Wallingford Water Department
PWSID CT1480011 · Wallingford, Connecticut · serves 37,267 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 13.9 ppt | 4 ppt | 7/22/2025 |
| PFHxS | 10.7 ppt | 10 ppt | 7/22/2025 |
| PFOS | 10.6 ppt | 4 ppt | 2/18/2026 |
| PFHxS | 8.7 ppt | 10 ppt | 2/18/2026 |
| PFBS | 4 ppt | — | 7/22/2025 |
| PFBS | 3.8 ppt | — | 2/18/2026 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2024-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2024-04-01 | 1,2,4-Trichlorobenzene | MR | No | Resolved |
| 2024-04-01 | cis-1,2-Dichloroethylene | MR | No | Resolved |
| 2024-04-01 | DICHLOROMETHANE | MR | No | Resolved |
| 2024-04-01 | o-Dichlorobenzene | MR | No | Resolved |
| 2024-04-01 | p-Dichlorobenzene | MR | No | Resolved |
| 2024-04-01 | Vinyl chloride | MR | No | Resolved |
| 2024-04-01 | 1,1-Dichloroethylene | MR | No | Resolved |
| 2024-04-01 | trans-1,2-Dichloroethylene | MR | No | Resolved |
| 2024-04-01 | 1,2-Dichloroethane | MR | No | Resolved |
| 2024-04-01 | 1,1,1-Trichloroethane | MR | No | Resolved |
| 2024-04-01 | Carbon tetrachloride | MR | No | Resolved |
| 2024-04-01 | 1,2-Dichloropropane | MR | No | Resolved |
| 2024-04-01 | Trichloroethylene | MR | No | Resolved |
| 2024-04-01 | 1,1,2-Trichloroethane | MR | No | Resolved |
| 2024-04-01 | Tetrachloroethylene | MR | No | Resolved |
| 2024-04-01 | CHLOROBENZENE | MR | No | Resolved |
| 2024-04-01 | Benzene | MR | No | Resolved |
| 2024-04-01 | Toluene | MR | No | Resolved |
| 2024-04-01 | Ethylbenzene | MR | No | Resolved |
| 2024-04-01 | Styrene | MR | No | Resolved |
| 2023-07-01 | Consumer Confidence Rule | Other | No | Resolved |