Nogales City Of
PWSID AZ0412004 · Nogales, Arizona · serves 22,000 people · groundwater source
F
Failing
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2026-06-01 | Chlorine | MR | No | Archived |
| 2026-05-01 | Chlorine | MR | No | Archived |
| 2026-04-01 | Arsenic | MR | No | Archived |
| 2026-04-01 | Chlorine | MR | No | Archived |
| 2025-10-01 | Arsenic | MR | No | Archived |
| 2025-07-01 | Chlorine | MR | No | Resolved |
| 2025-07-01 | Arsenic | MR | No | Archived |
| 2025-07-01 | Nitrate | MR | No | Resolved |
| 2024-12-20 | Public Notice | Other | No | Resolved |
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | RPT | No | Resolved |
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | TT | Yes | Resolved |
| 2024-10-01 | TTHM | MR | No | Resolved |
| 2024-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2024-10-01 | Arsenic | MR | No | Resolved |
| 2024-04-28 | Public Notice | Other | No | Resolved |
| 2023-10-01 | TTHM | MR | No | Resolved |
| 2023-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2023-10-01 | Arsenic | MR | No | Resolved |
| 2023-07-01 | Revised Total Coliform Rule | RPT | No | Resolved |
| 2023-07-01 | Arsenic | MR | No | Resolved |
| 2023-04-01 | Chlorine | MR | No | Resolved |
| 2023-01-01 | Arsenic | MR | No | Resolved |
| 2023-01-01 | Nitrate | MR | No | Resolved |
| 2023-01-01 | Nitrate | MR | No | Resolved |
| 2021-11-15 | Groundwater Rule | TT | Yes | Resolved |