JOHNSTONVILLE WATER SYSTEM
PWS ID: CA1805001 · SUSANVILLE, California 96130
Population Served
40
Total Violations
16
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Lassen
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 6
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 7 | 2014 |
| Revised Total Coliform Rule | MON | 4 | 2021 |
| E. COLI | MR | 2 | 2014 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.