Aquarion-Ridgefield
PWSID CT1180011 · Shelton, Connecticut · serves 7,476 people · surface water source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 10.6 ppt | — | 6/19/2024 |
| PFOA | 10.6 ppt | 4 ppt | 6/19/2024 |
| PFHxA | 9.6 ppt | — | 6/19/2024 |
| PFOA | 6.7 ppt | 4 ppt | 9/4/2024 |
| PFOA | 6.5 ppt | 4 ppt | 9/4/2024 |
| PFOS | 6.1 ppt | 4 ppt | 9/4/2024 |
| PFPeA | 6 ppt | — | 9/4/2024 |
| PFOA | 5.8 ppt | 4 ppt | 3/7/2024 |
| PFOA | 5.5 ppt | 4 ppt | 3/7/2024 |
| PFHxA | 5.5 ppt | — | 9/4/2024 |
| PFOS | 5.4 ppt | 4 ppt | 3/7/2024 |
| PFHpA | 5.4 ppt | — | 6/19/2024 |
| PFBA | 5.3 ppt | — | 6/19/2024 |
| PFOA | 5 ppt | 4 ppt | 1/28/2025 |
| PFOA | 5 ppt | 4 ppt | 6/5/2024 |
| PFOA | 4.6 ppt | 4 ppt | 9/4/2024 |
| PFOA | 4 ppt | 4 ppt | 12/3/2024 |
| PFHxA | 3.5 ppt | — | 9/4/2024 |
| PFBS | 3.3 ppt | — | 6/19/2024 |
| PFPeA | 3.2 ppt | — | 3/7/2024 |
| PFBS | 3.2 ppt | — | 9/4/2024 |
| PFHxA | 3.2 ppt | — | 6/5/2024 |
| PFHxA | 3.1 ppt | — | 3/7/2024 |
| PFPeA | 3.1 ppt | — | 9/4/2024 |
| PFHxA | 3 ppt | — | 3/7/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2021-12-30 | Lead and Copper Rule | MR | No | Resolved |