VALENZUELA WATER SYSTEM
PWS ID: CA3500527 · HOLLISTER, California 95024
Population Served
55
Total Violations
117
Health-Based Violations
26
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 17
- County
- San Benito
- School/Daycare
- No
- MCL Violations
- 26
- Monitoring Violations
- 82
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 60 | 2007 |
| Nitrate | MCL | 19 | 2011 |
| Consumer Confidence Rule | Other | 7 | 2009 |
| Chlorine | MR | 5 | 2005 |
| Revised Total Coliform Rule | MON | 5 | 2025 |
| Coliform (TCR) | MCL | 5 | 1998 |
| Lead and Copper Rule | MR | 3 | 2005 |
| Asbestos | MR | 2 | 2000 |
| Nitrate-Nitrite | MCL | 2 | 2018 |
| Arsenic | MR | 2 | 2000 |
| Benzene | MR | 2 | 2000 |
| Nitrate | MR | 2 | 2000 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.