INDIAN GRINDING ROCK-CALAVERAS DISTRICT
PWS ID: CA0310300 · COLUMBIA, California 95310
Population Served
63
Total Violations
0
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 7
- County
- Amador
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 0
- Treatment Tech Violations
- 0
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.