U.S. GYPSUM CO
PWS ID: CA1300517 · EL CENTRO, California 92244
Population Served
280
Total Violations
22
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Imperial
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 17
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 6 | 2000 |
| TTHM | MR | 3 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2022 |
| Nitrate | MR | 2 | 2022 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
| Nitrate-Nitrite | MR | 1 | 2011 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| 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.