MESA DUNES MOBILE HOME ESTATES
PWS ID: CA4000650 · ARROYO GRANDE, California 93420
Population Served
600
Total Violations
15
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 313
- County
- San Luis Obispo
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 15
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 4 | 2019 |
| TTHM | MR | 4 | 2019 |
| Revised Total Coliform Rule | MON | 2 | 2021 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Coliform (TCR) | MR | 2 | 2014 |
| 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.