LOS ANGELES CWWD 40 REG 4 & 34 LANCASTER
California — Community Water System — PWSID: CA1910070
System Information
| PWSID | CA1910070 |
| System Name | LOS ANGELES CWWD 40 REG 4 & 34 LANCASTER |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | ALHAMBRA |
| ZIP Code | 91803 |
| Address | 900 SOUTH FREMONT AVENUE |
| Organization | HERNANDEZ, CAROLINA |
| Phone | 626-300-3300 |
Population & Service
| Population Served | 208,129 |
| Service Connections | 52,956 |
Drinking Water Violations (8)
This water system has 8 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2007 | Sep 30, 2007 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Sep 30, 2007 | Arsenic Rule |
| Sep 1, 2007 | Sep 30, 2007 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Sep 30, 2007 | Arsenic Rule |
| Feb 1, 2003 | Feb 28, 2003 | Nitrite | MR | No | No | — | 1 mg/L | — | Resolved | Feb 28, 2003 | Nitrate Rule |
| Feb 1, 2003 | Feb 28, 2003 | Nitrite | MR | No | No | — | 1 mg/L | — | Resolved | Feb 28, 2003 | Nitrate Rule |
| Feb 1, 2003 | Feb 28, 2003 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Feb 28, 2003 | Nitrate Rule |
| Feb 1, 2003 | Feb 28, 2003 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Feb 28, 2003 | Nitrate Rule |
| Dec 1, 1992 | Dec 31, 1992 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1992 | Total Coliform Rule |
| Dec 1, 1992 | Dec 31, 1992 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1992 | Total Coliform Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.