HEMLOCK MUTUAL WATER CO.
PWS ID: CA1910053 · EL MONTE, California 91732
Population Served
686
Total Violations
76
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 208
- County
- Los Angeles
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 61
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 50 | 2009 |
| Coliform (TCR) | MCL | 7 | 2012 |
| Lead and Copper Rule | MR | 5 | 2009 |
| Coliform (TCR) | MR | 4 | 2012 |
| Public Notice | Other | 4 | 2024 |
| E. COLI | MR | 2 | 2012 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.