SOUTH TONGASS WATER UTILITY
PWS ID: AK2121510 · KETCHIKAN, Alaska 99901
Population Served
975
Total Violations
99
Health-Based Violations
21
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 327
- County
- Ketchikan Gateway Borough
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 16
- Treatment Tech Violations
- 12
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 9 | 2025 |
| Surface Water Treatment Rule | TT | 6 | 2018 |
| Interim Enhanced Surface Water Treatment Rule | TT | 6 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2016 |
| Surface Water Treatment Rule | MR | 4 | 2020 |
| Interim Enhanced Surface Water Treatment Rule | MR | 4 | 2019 |
| Consumer Confidence Rule | Other | 2 | 2017 |
| Coliform (TCR) | MR | 1 | 2012 |
| Chlorine | MR | 1 | 2012 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.