TWIN RIDGES OAK TREE SCHOOL
PWS ID: CA2900593 · NEVADA CITY, California 95959
Population Served
120
Total Violations
33
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 8
- County
- Nevada
- School/Daycare
- Yes
- MCL Violations
- 3
- Monitoring Violations
- 30
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 23 | 2015 |
| Revised Total Coliform Rule | MON | 6 | 2018 |
| Coliform (TCR) | MCL | 3 | 2011 |
| Lead and Copper Rule | MR | 1 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.