Gilbert, Town Of
PWSID AZ0407092 · Gilbert, Arizona · serves 247,600 people · surface water source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBS | 18.1 ppt | — | 5/7/2024 |
| PFBS | 15.3 ppt | — | 8/6/2024 |
| PFBS | 13.2 ppt | — | 10/21/2024 |
| PFBS | 12.9 ppt | — | 5/14/2024 |
| PFBS | 11.1 ppt | — | 11/8/2023 |
| PFOS | 9.8 ppt | 4 ppt | 5/14/2024 |
| PFBS | 7.9 ppt | — | 11/7/2023 |
| PFOA | 6.5 ppt | 4 ppt | 5/14/2024 |
| PFPeA | 6.2 ppt | — | 5/14/2024 |
| PFBA | 5.8 ppt | — | 5/7/2024 |
| PFOS | 5.6 ppt | 4 ppt | 11/14/2023 |
| PFBA | 5 ppt | — | 5/14/2024 |
| PFHxA | 4.4 ppt | — | 5/14/2024 |
| PFBS | 3.6 ppt | — | 5/14/2024 |
| PFPeA | 3.4 ppt | — | 11/14/2023 |
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 | Bromate | MR | No | Archived |
| 2026-05-01 | Bromate | MR | No | Archived |
| 2026-04-01 | Arsenic | MR | No | Archived |
| 2026-02-01 | Revised Total Coliform Rule | RPT | No | Resolved |
| 2026-01-01 | Lead and Copper Rule | MR | No | Unaddressed |
| 2026-01-01 | Bromate | MR | No | Archived |
| 2025-12-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2025-10-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2025-10-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2025-09-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2025-07-01 | Revised Total Coliform Rule | RPT | No | Resolved |
| 2025-04-01 | Nitrate | MR | No | Resolved |
| 2025-02-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2024-11-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2024-11-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2024-10-01 | CARBON, TOTAL | MR | No | Resolved |
| 2024-10-01 | Nitrate | MR | No | Resolved |
| 2024-10-01 | Nitrate | MR | No | Resolved |
| 2024-10-01 | Arsenic | MR | No | Resolved |
| 2024-10-01 | Nitrate | MR | No | Resolved |
| 2024-10-01 | Nitrate | MR | No | Resolved |
| 2024-10-01 | Nitrate | MR | No | Resolved |
| 2024-10-01 | Nitrate | MR | No | Resolved |
| 2024-10-01 | Nitrate | MR | No | Resolved |
| 2024-10-01 | Arsenic | MR | No | Resolved |
| 2024-07-01 | Revised Total Coliform Rule | RPT | No | Resolved |
| 2024-07-01 | CARBON, TOTAL | MR | No | Resolved |
| 2024-04-01 | CARBON, TOTAL | MR | No | Resolved |
| 2023-07-01 | TTHM | MR | No | Resolved |
| 2023-07-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2023-07-01 | Arsenic | MR | No | Resolved |
| 2023-07-01 | Arsenic | MR | No | Resolved |
| 2023-01-01 | Nitrate | MR | No | Resolved |
| 2022-04-01 | Nitrate | MR | No | Resolved |
| 2022-04-01 | 1,2,4-Trichlorobenzene | MR | No | Resolved |
| 2022-04-01 | cis-1,2-Dichloroethylene | MR | No | Resolved |
| 2022-04-01 | Xylenes, Total | MR | No | Resolved |
| 2022-04-01 | DICHLOROMETHANE | MR | No | Resolved |
| 2022-04-01 | o-Dichlorobenzene | MR | No | Resolved |
| 2022-04-01 | p-Dichlorobenzene | MR | No | Resolved |
| 2022-04-01 | Vinyl chloride | MR | No | Resolved |
| 2022-04-01 | 1,1-Dichloroethylene | MR | No | Resolved |
| 2022-04-01 | trans-1,2-Dichloroethylene | MR | No | Resolved |
| 2022-04-01 | 1,2-Dichloroethane | MR | No | Resolved |
| 2022-04-01 | 1,1,1-Trichloroethane | MR | No | Resolved |
| 2022-04-01 | Carbon tetrachloride | MR | No | Resolved |
| 2022-04-01 | 1,2-Dichloropropane | MR | No | Resolved |
| 2022-04-01 | Trichloroethylene | MR | No | Resolved |
| 2022-04-01 | 1,1,2-Trichloroethane | MR | No | Resolved |
| 2022-04-01 | Tetrachloroethylene | MR | No | Resolved |
| 2022-04-01 | CHLOROBENZENE | MR | No | Resolved |
| 2022-04-01 | Benzene | MR | No | Resolved |
| 2022-04-01 | Toluene | MR | No | Resolved |
| 2022-04-01 | Ethylbenzene | MR | No | Resolved |
| 2022-04-01 | Styrene | MR | No | Resolved |
| 2022-04-01 | 1,2,4-Trichlorobenzene | MR | No | Resolved |
| 2022-04-01 | cis-1,2-Dichloroethylene | MR | No | Resolved |
| 2022-04-01 | Xylenes, Total | MR | No | Resolved |
| 2022-04-01 | DICHLOROMETHANE | MR | No | Resolved |
| 2022-04-01 | o-Dichlorobenzene | MR | No | Resolved |
| 2022-04-01 | p-Dichlorobenzene | MR | No | Resolved |
| 2022-04-01 | Vinyl chloride | MR | No | Resolved |
| 2022-04-01 | 1,1-Dichloroethylene | MR | No | Resolved |
| 2022-04-01 | trans-1,2-Dichloroethylene | MR | No | Resolved |
| 2022-04-01 | 1,2-Dichloroethane | MR | No | Resolved |
| 2022-04-01 | 1,1,1-Trichloroethane | MR | No | Resolved |
| 2022-04-01 | Carbon tetrachloride | MR | No | Resolved |
| 2022-04-01 | 1,2-Dichloropropane | MR | No | Resolved |
| 2022-04-01 | Trichloroethylene | MR | No | Resolved |
| 2022-04-01 | 1,1,2-Trichloroethane | MR | No | Resolved |
| 2022-04-01 | Tetrachloroethylene | MR | No | Resolved |
| 2022-04-01 | CHLOROBENZENE | MR | No | Resolved |
| 2022-04-01 | Benzene | MR | No | Resolved |
| 2022-04-01 | Toluene | MR | No | Resolved |
| 2022-04-01 | Ethylbenzene | MR | No | Resolved |
| 2022-04-01 | Styrene | MR | No | Resolved |
| 2022-02-01 | TTHM | MR | No | Resolved |
| 2022-02-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2022-01-01 | Interim Enhanced Surface Water Treatment Rule | MR | No | Resolved |
| 2022-01-01 | Surface Water Treatment Rule | MR | No | Resolved |