Metropolitano
PWSID PR0002591 · San Juan, Puerto Rico · serves 1,084,637 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| 6:2 FTS | 49 ppt | — | 1/15/2025 |
| 8:2 FTS | 15.3 ppt | — | 1/15/2025 |
| PFOA | 10.9 ppt | 4 ppt | 1/15/2025 |
| PFBA | 8.6 ppt | — | 4/17/2024 |
| PFOS | 7.8 ppt | 4 ppt | 7/18/2024 |
| PFBA | 7.6 ppt | — | 7/18/2024 |
| PFOS | 7.6 ppt | 4 ppt | 7/18/2024 |
| PFDA | 7.5 ppt | — | 1/15/2025 |
| PFBA | 7.3 ppt | — | 7/11/2024 |
| PFBA | 7.2 ppt | — | 4/17/2024 |
| PFBA | 7 ppt | — | 4/17/2024 |
| PFOS | 6.3 ppt | 4 ppt | 1/13/2025 |
| PFOS | 6.3 ppt | 4 ppt | 4/17/2024 |
| PFOS | 6.1 ppt | 4 ppt | 10/30/2024 |
| PFOS | 5.9 ppt | 4 ppt | 4/17/2024 |
| PFOS | 5.5 ppt | 4 ppt | 1/13/2025 |
| PFOA | 5.3 ppt | 4 ppt | 7/11/2024 |
| PFOS | 5.2 ppt | 4 ppt | 10/30/2024 |
| PFBA | 5.2 ppt | — | 1/13/2025 |
| PFOS | 5 ppt | 4 ppt | 4/17/2024 |
| PFOS | 4.4 ppt | 4 ppt | 10/12/2024 |
| PFPeA | 4 ppt | — | 4/17/2024 |
| PFHxA | 3.5 ppt | — | 4/17/2024 |
| PFHxA | 3.5 ppt | — | 7/11/2024 |
| PFPeA | 3.1 ppt | — | 10/12/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2026-06-01 | Surface Water Treatment Rule | MR | No | Archived |
| 2026-04-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Archived |
| 2026-02-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Archived |
| 2025-08-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2025-05-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2025-05-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2025-05-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2025-03-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-12-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-12-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2024-11-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-11-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-11-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2024-08-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-08-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-08-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-05-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-04-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-04-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-04-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-04-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2024-04-01 | Nitrate | MR | No | Resolved |
| 2024-04-01 | Nitrate | MR | No | Resolved |
| 2024-02-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2024-01-01 | Nitrate | MR | No | Resolved |
| 2024-01-01 | Nitrate | MR | No | Resolved |
| 2024-01-01 | Nitrate | MR | No | Resolved |
| 2024-01-01 | Nitrate | MR | No | Resolved |
| 2023-10-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2023-10-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2023-08-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2023-04-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2023-03-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2023-03-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2023-01-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-11-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-11-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-11-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-10-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-10-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-10-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-09-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-09-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-09-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-06-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-04-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-04-01 | Carbofuran | MR | No | Resolved |
| 2022-04-01 | OXAMYL | MR | No | Resolved |
| 2022-02-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-02-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-02-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-02-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |
| 2022-02-01 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | Resolved |