LOMA MAR MUTUAL
PWS ID: CA4100512 · LOMA MAR, California 94021
Population Served
65
Total Violations
67
Health-Based Violations
24
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 34
- County
- San Mateo
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 9
- Treatment Tech Violations
- 19
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 17 | 2016 |
| Coliform (TCR) | MR | 7 | 2006 |
| Consumer Confidence Rule | Other | 3 | 2003 |
| TTHM | MCL | 2 | 2016 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Interim Enhanced Surface Water Treatment Rule | TT | 2 | 2005 |
| Coliform (TCR) | MCL | 2 | 2003 |
| Mercury | MCL | 1 | 1980 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.