NORTHROP GRUMMAN CORP.
California — Non-Transient Non-Community — PWSID: CA1910097
System Information
| PWSID | CA1910097 |
| System Name | NORTHROP GRUMMAN CORP. |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 15, 1985 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | PALMDALE |
| ZIP Code | 93550 |
| Address | 3520 E. AVENUE M |
| Organization | MEZA, CORY |
| Phone | 661-540-0482 |
Population & Service
| Population Served | 6,214 |
| Service Connections | 38 |
Drinking Water Violations (19)
This water system has 19 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2023 | Dec 31, 2023 | TTHM | MR | No | No | — | 0.080 mg/L | — | Archived | Dec 31, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2023 | Dec 31, 2023 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Archived | Dec 31, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Dec 1, 2013 | Dec 31, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2013 | Total Coliform Rule |
| Dec 1, 2013 | Dec 31, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2013 | Total Coliform Rule |
| Nov 1, 2009 | Nov 30, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2009 | Total Coliform Rule |
| Nov 1, 2009 | Nov 30, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2009 | Total Coliform Rule |
| Jan 1, 2008 | Dec 31, 2009 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2008 | Dec 31, 2009 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2008 | Dec 31, 2009 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2008 | Dec 31, 2009 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Sep 11, 2007 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 24, 2008 | Lead and Copper Rule |
| Sep 11, 2007 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 24, 2008 | Lead and Copper Rule |
| Jan 1, 2006 | Dec 31, 2006 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2006 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2006 | Dec 31, 2006 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2006 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2006 | Dec 31, 2006 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2006 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2006 | Dec 31, 2006 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2006 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 1995 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 9, 2007 | Lead and Copper Rule |
| Jul 1, 1995 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 9, 2007 | Lead and Copper Rule |
| — | — | — | 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.