Mountain Lakes Water Dep
PWSID NJ1425001 · Riverdale, New Jersey · serves 4,012 people · groundwater source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOA | 13.3 ppt | 4 ppt | 1/13/2025 |
| PFOA | 9.5 ppt | 4 ppt | 7/15/2025 |
| PFOA | 9 ppt | 4 ppt | 7/15/2025 |
| PFOA | 8.4 ppt | 4 ppt | 1/13/2025 |
| PFOA | 8.3 ppt | 4 ppt | 1/13/2025 |
| PFOA | 6.5 ppt | 4 ppt | 1/13/2025 |
| PFOA | 6.3 ppt | 4 ppt | 7/15/2025 |
| PFPeA | 3 ppt | — | 1/13/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-12-30 | Lead and Copper Rule | MR | No | Resolved |
| 2025-08-01 | Chlorine | MR | No | Resolved |
| 2025-07-01 | Chlorine | MR | No | Archived |
| 2025-01-01 | Nitrate | MR | No | Resolved |
| 2025-01-01 | Nitrate | MR | No | Resolved |
| 2024-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2023-10-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2023-07-01 | Consumer Confidence Rule | Other | No | Resolved |