SAN MARTIN COUNTY WATER DISTRICT
PWS ID: CA4300542 · SAN MARTIN, California 95046-0120
Population Served
627
Total Violations
70
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 190
- County
- Santa Clara
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 58
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 16 | 1998 |
| LASSO | MR | 16 | 1999 |
| Benzene | MR | 8 | 1996 |
| Lead and Copper Rule | MR | 8 | 2019 |
| Nitrite | MR | 8 | 1996 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Nitrate | MCL | 2 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.