Grand Canyon National Park
PWSID AZ0403702 · Grand Canyon, Arizona · serves 16,590 people · groundwater source
F
Failing
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-11-19 | Public Notice | Other | No | Resolved |
| 2025-09-02 | Public Notice | Other | No | Resolved |
| 2025-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2025-04-01 | Chlorine | MR | No | Resolved |
| 2025-04-01 | 1,2,4-Trichlorobenzene | MR | No | Resolved |
| 2025-04-01 | cis-1,2-Dichloroethylene | MR | No | Resolved |
| 2025-04-01 | Xylenes, Total | MR | No | Resolved |
| 2025-04-01 | DICHLOROMETHANE | MR | No | Resolved |
| 2025-04-01 | o-Dichlorobenzene | MR | No | Resolved |
| 2025-04-01 | p-Dichlorobenzene | MR | No | Resolved |
| 2025-04-01 | Vinyl chloride | MR | No | Resolved |
| 2025-04-01 | 1,1-Dichloroethylene | MR | No | Resolved |
| 2025-04-01 | trans-1,2-Dichloroethylene | MR | No | Resolved |
| 2025-04-01 | 1,2-Dichloroethane | MR | No | Resolved |
| 2025-04-01 | 1,1,1-Trichloroethane | MR | No | Resolved |
| 2025-04-01 | Carbon tetrachloride | MR | No | Resolved |
| 2025-04-01 | 1,2-Dichloropropane | MR | No | Resolved |
| 2025-04-01 | Trichloroethylene | MR | No | Resolved |
| 2025-04-01 | 1,1,2-Trichloroethane | MR | No | Resolved |
| 2025-04-01 | Tetrachloroethylene | MR | No | Resolved |
| 2025-04-01 | CHLOROBENZENE | MR | No | Resolved |
| 2025-04-01 | Benzene | MR | No | Resolved |
| 2025-04-01 | Toluene | MR | No | Resolved |
| 2025-04-01 | Ethylbenzene | MR | No | Resolved |
| 2025-04-01 | Styrene | MR | No | Resolved |
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | TT | Yes | Resolved |
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | RPT | No | Resolved |
| 2024-10-01 | Revised Total Coliform Rule | RPT | No | Resolved |
| 2024-08-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2024-08-01 | Chlorine | MR | No | Resolved |
| 2024-07-02 | Public Notice | Other | No | Resolved |
| 2024-07-02 | Public Notice | Other | No | Resolved |
| 2024-04-01 | TTHM | MCL | Yes | Resolved |
| 2023-12-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2023-10-01 | TTHM | MR | No | Resolved |
| 2023-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2023-07-01 | Chlorine | MR | No | Resolved |
| 2023-04-01 | TTHM | MR | No | Resolved |
| 2023-04-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2022-10-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2022-07-01 | Groundwater Rule | TT | Yes | Resolved |
| 2022-06-01 | Groundwater Rule | TT | Yes | Resolved |
| 2022-03-01 | Groundwater Rule | TT | Yes | Resolved |
| 2022-01-01 | Chlorine | MR | No | Resolved |
| 2021-12-01 | Groundwater Rule | TT | Yes | Resolved |