East Lyme Water & Sewer Commission
PWSID CT0450011 · Niantic, Connecticut · serves 15,245 people · surface water source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOA | 9.2 ppt | 4 ppt | 11/14/2023 |
| PFOA | 8 ppt | 4 ppt | 5/22/2024 |
| PFOS | 7.2 ppt | 4 ppt | 11/14/2023 |
| PFOS | 6.7 ppt | 4 ppt | 5/22/2024 |
| PFOS | 5.8 ppt | 4 ppt | 11/14/2023 |
| PFPeA | 5.6 ppt | — | 5/22/2024 |
| PFPeA | 5.5 ppt | — | 11/14/2023 |
| PFHxA | 5.4 ppt | — | 11/14/2023 |
| PFHxA | 5.1 ppt | — | 5/22/2024 |
| PFOA | 5.1 ppt | 4 ppt | 5/22/2024 |
| PFPeA | 5.1 ppt | — | 5/22/2024 |
| PFOS | 5 ppt | 4 ppt | 5/22/2024 |
| PFBS | 4.8 ppt | — | 11/14/2023 |
| PFOA | 4.5 ppt | 4 ppt | 11/14/2023 |
| PFHxA | 4.1 ppt | — | 5/22/2024 |
| PFPeA | 3.5 ppt | — | 11/14/2023 |
| PFBS | 3 ppt | — | 5/22/2024 |
| PFHpA | 3 ppt | — | 5/22/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2024-10-01 | TTHM | MR | No | Resolved |
| 2024-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |