SANDMOUND MUTUAL
PWS ID: CA0707556 · BETHEL ISLAND, California 94511
Population Served
100
Total Violations
12
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 110
- County
- Contra Costa
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 7
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 5 | 2021 |
| Coliform (TCR) | MCL | 2 | 2010 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| 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.