MOON VALLEY WATER SYSTEM
PWS ID: CA4900871 · SONOMA, California 95476
Population Served
691
Total Violations
4
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 247
- County
- Sonoma
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 2
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 2 | 2006 |
| Coliform (TCR) | MCL | 2 | 2007 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.