SIERRA OUTDOOR SCHOOL
PWS ID: CA5500171 · SONORA, California 95370
Population Served
289
Total Violations
30
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 19
- County
- Tuolumne
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 5
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 3 | 2001 |
| Revised Total Coliform Rule | MON | 2 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.