GSWC - SOUTHWEST
California - Community Water System - PWSID: CA1910155
System Information
| PWSID | CA1910155 |
| System Name | GSWC - SOUTHWEST |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | HAWTHORNE |
| ZIP Code | 90250 |
| Address | 14401 SOUTH CHADRON AVENUE |
| Organization | SCHULTISE, DAVE |
| Phone | 310-263-4141 |
Population & Service
| Population Served | 277,740 |
| Service Connections | 52,644 |
Drinking Water Violations (11)
This water system has 11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 21, 2014 | - | MR | No | No | - | - | - | Resolved | Dec 1, 2014 | - | |
| Nov 21, 2014 | - | MR | No | No | - | - | - | Resolved | Dec 1, 2014 | - | |
| Nov 1, 2011 | Nov 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2011 | - | |
| Nov 1, 2011 | Nov 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2011 | - | |
| Jun 1, 2007 | Jun 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2007 | - | |
| Jun 1, 2007 | Jun 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2007 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.