SAN JUSTO MUTUAL WATER COMPANY
PWS ID: CA3500550 · HOLLISTER, California 95023
Population Served
160
Total Violations
74
Health-Based Violations
26
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 61
- County
- San Benito
- School/Daycare
- No
- MCL Violations
- 25
- Monitoring Violations
- 41
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 28 | 2007 |
| Coliform (TCR) | MCL | 20 | 2007 |
| Nitrate | MCL | 5 | 1991 |
| Chlorine | MR | 4 | 2007 |
| TTHM | MR | 3 | 2020 |
| Lead and Copper Rule | MR | 3 | 2020 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Coliform (TCR) | Other | 2 | 2005 |
| Public Notice | Other | 2 | 2007 |
| Consumer Confidence Rule | Other | 2 | 2021 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.