SIERRA VILLAGE MUTUAL WATER CO
PWS ID: CA5500074 · TWAIN HARTE, California 95383
Population Served
361
Total Violations
12
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 129
- County
- Tuolumne
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 8
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 3 | 2001 |
| Coliform (TCR) | MCL | 2 | 2012 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Revised Total Coliform Rule | MON | 2 | 2025 |
| Lead and Copper Rule | MR | 1 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.