O'CONNOR TRACT CO-OPERATIVE WATER CO.
PWS ID: CA4110019 · PALO ALTO, California 94302
Population Served
2,789
Total Violations
12
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 359
- County
- San Mateo
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 2
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 6 | 2004 |
| Revised Total Coliform Rule | TT | 2 | 2018 |
| Coliform (TCR) | MR | 2 | 2015 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.