VALLEY STATE PRISON
PWS ID: CA2010801 · CHOWCHILLA, California 93610
Population Served
3,173
Total Violations
68
Health-Based Violations
47
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- State
- Connections
- 74
- County
- Madera
- School/Daycare
- No
- MCL Violations
- 47
- Monitoring Violations
- 19
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 47 | 2015 |
| Coliform (TCR) | MR | 8 | 2014 |
| Arsenic | MR | 7 | 2010 |
| Revised Total Coliform Rule | MON | 4 | 2016 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.