CSA 70 W-4 PIONEERTOWN
PWS ID: CA3600196 · SAN BERNARDINO, California 92415-0450
Population Served
470
Total Violations
186
Health-Based Violations
175
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 127
- County
- San Bernardino
- School/Daycare
- No
- MCL Violations
- 175
- Monitoring Violations
- 6
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 78 | 2019 |
| Fluoride | MCL | 72 | 2019 |
| Combined Uranium | MCL | 25 | 2018 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2022 |
| TTHM | MR | 2 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.