Unalaska Water System
PWSID AK2260309 · Unalaska, Alaska · serves 9,400 people · surface water source
B
Good
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | TTHM | MR | No | Resolved |
| 2025-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2024-05-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2024-05-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2024-05-01 | Chlorine | MR | No | Resolved |
| 2024-01-01 | TTHM | MR | No | Resolved |
| 2024-01-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2024-01-01 | Nitrate | MR | No | Resolved |
| 2023-10-01 | CARBON, TOTAL | MR | No | Resolved |
| 2023-07-01 | CARBON, TOTAL | MR | No | Resolved |
| 2022-05-01 | Surface Water Treatment Rule | MR | No | Resolved |
| 2022-05-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2022-04-01 | Chlorine | MR | No | Resolved |