CDPR-HATFIELD
PWS ID: CA2410302 · COLUMBIA, California 95310
Population Served
352
Total Violations
18
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 7
- County
- Merced
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 14
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 10 | 2007 |
| Coliform (TCR) | MCL | 4 | 2002 |
| Nitrate | MR | 4 | 2020 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.