MCGRATH WATER SYSTEM
PWS ID: AK2280155 · MCGRATH, Alaska 99627
Population Served
341
Total Violations
586
Health-Based Violations
110
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 150
- County
- Yukon-Koyukuk Census Area
- School/Daycare
- No
- MCL Violations
- 89
- Monitoring Violations
- 354
- Treatment Tech Violations
- 21
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 74 | 2025 |
| Total Haloacetic Acids (HAA5) | MCL | 52 | 2025 |
| TTHM | MCL | 36 | 2023 |
| Chlorine | MR | 29 | 2024 |
| Coliform (TCR) | MR | 23 | 2006 |
| Interim Enhanced Surface Water Treatment Rule | MR | 15 | 2025 |
| Surface Water Treatment Rule | TT | 13 | 2004 |
| CARBON, TOTAL | MR | 10 | 2023 |
| Consumer Confidence Rule | Other | 10 | 2014 |
| CARBON, TOTAL | TT | 8 | 2024 |
| DICHLOROMETHANE | MR | 7 | 2005 |
| 1,2,4-Trichlorobenzene | MR | 7 | 2005 |
| p-Dichlorobenzene | MR | 7 | 2005 |
| 1,1,1-Trichloroethane | MR | 7 | 2005 |
| o-Dichlorobenzene | MR | 7 | 2005 |
| Carbon tetrachloride | MR | 7 | 2005 |
| CHLOROBENZENE | MR | 7 | 2005 |
| Toluene | MR | 7 | 2005 |
| Styrene | MR | 7 | 2005 |
| 1,2-Dichloropropane | MR | 7 | 2005 |
| cis-1,2-Dichloroethylene | MR | 7 | 2005 |
| trans-1,2-Dichloroethylene | MR | 7 | 2005 |
| Trichloroethylene | MR | 7 | 2005 |
| Benzene | MR | 7 | 2005 |
| 1,1,2-Trichloroethane | MR | 7 | 2005 |
| Xylenes, Total | MR | 7 | 2005 |
| Ethylbenzene | MR | 7 | 2005 |
| 1,1-Dichloroethylene | MR | 7 | 2005 |
| 1,2-Dichloroethane | MR | 7 | 2005 |
| Tetrachloroethylene | MR | 7 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.