NANWALEK
PWS ID: AK2240464 · NANWALEK, Alaska 99603-6628
Population Served
281
Total Violations
1,225
Health-Based Violations
45
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 55
- County
- Kenai Peninsula Borough
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 950
- Treatment Tech Violations
- 39
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 183 | 2025 |
| Coliform (TCR) | MR | 120 | 2016 |
| Interim Enhanced Surface Water Treatment Rule | MR | 90 | 2025 |
| Chlorine | MR | 69 | 2025 |
| Revised Total Coliform Rule | MON | 41 | 2025 |
| Surface Water Treatment Rule | TT | 37 | 2017 |
| Nitrate | MR | 24 | 2022 |
| Consumer Confidence Rule | Other | 14 | 2024 |
| Arsenic | MR | 12 | 2006 |
| Carbon tetrachloride | MR | 12 | 2022 |
| 1,1-Dichloroethylene | MR | 12 | 2022 |
| Benzene | MR | 12 | 2022 |
| 1,2-Dichloroethane | MR | 12 | 2022 |
| p-Dichlorobenzene | MR | 12 | 2022 |
| 1,1,1-Trichloroethane | MR | 12 | 2022 |
| Trichloroethylene | MR | 12 | 2022 |
| Cadmium | MR | 11 | 1992 |
| Selenium | MR | 11 | 1992 |
| Chromium | MR | 11 | 1992 |
| Fluoride | MR | 11 | 1992 |
| Mercury | MR | 11 | 1992 |
| Barium | MR | 11 | 1992 |
| o-Dichlorobenzene | MR | 11 | 2022 |
| Ethylbenzene | MR | 11 | 2022 |
| 1,2-Dichloropropane | MR | 11 | 2022 |
| Toluene | MR | 10 | 2022 |
| Tetrachloroethylene | MR | 10 | 2022 |
| CHLOROBENZENE | MR | 10 | 2022 |
| Xylenes, Total | MR | 10 | 2022 |
| Styrene | MR | 10 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.