MONTANA DE ORO STATE PARK
PWS ID: CA4010305 · SAN SIMEON, California 93452
Population Served
990
Total Violations
7
Health-Based Violations
2
Water Source
Surface Water
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 3
- County
- San Luis Obispo
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 5
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 2 | 2006 |
| Coliform (TCR) | MCL | 2 | 1993 |
| Nitrate | MR | 2 | 2023 |
| E. COLI | MR | 1 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.