COLUSA CO. WWD #1 - GRIMES
PWS ID: CA0600008 · GRIMES, California 95950
Population Served
512
Total Violations
104
Health-Based Violations
89
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 114
- County
- Colusa
- School/Daycare
- No
- MCL Violations
- 89
- Monitoring Violations
- 15
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 89 | 2024 |
| Lead and Copper Rule | MR | 6 | 2023 |
| Revised Total Coliform Rule | MON | 5 | 2022 |
| Nitrate | MR | 2 | 2017 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.