BIG ROCK C.S.D.
PWS ID: CA0800532 · CRESCENT CITY, California 95531
Population Served
650
Total Violations
48
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 116
- County
- Del Norte
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 19
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 8 | 2004 |
| Lead and Copper Rule | MR | 3 | 2019 |
| Surface Water Treatment Rule | TT | 2 | 1993 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| 2,4,5-TP | MR | 1 | 1981 |
| 2,4-D | MR | 1 | 1981 |
| Endrin | MR | 1 | 1981 |
| Toxaphene | MR | 1 | 1981 |
| BHC-GAMMA | MR | 1 | 1981 |
| Methoxychlor | MR | 1 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.