TWIN RIDGES GRIZZLY HILL SCHOOL
PWS ID: CA2900578 · NEVADA CITY, California 95959
Population Served
125
Total Violations
31
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 11
- County
- Nevada
- School/Daycare
- Yes
- MCL Violations
- 8
- Monitoring Violations
- 22
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 13 | 2015 |
| Coliform (TCR) | MCL | 8 | 1997 |
| Revised Total Coliform Rule | MON | 4 | 2018 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2017 |
| TTHM | MR | 2 | 2017 |
| 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.