U.S.N., SAN NICOLAS ISLAND
California - Community Water System - PWSID: CA5610702
System Information
| PWSID | CA5610702 |
| System Name | U.S.N., SAN NICOLAS ISLAND |
| System Type | Community Water System |
| Water Source | Ground Water Under Influence |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 15, 1992 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | POINT MUGU |
| ZIP Code | 93042 |
| Address | 311 Main Road Bldg 66 |
| Organization | JACOBSEN, NATHAN |
| Phone | 805-989-3041 |
Population & Service
| Population Served | 254 |
| Service Connections | 106 |
Drinking Water Violations (24)
This water system has 24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 1, 2012 | Dec 31, 2012 | MR | No | No | - | - | - | Resolved | Dec 31, 2012 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MR | No | No | - | - | - | Resolved | Dec 31, 2012 | - | |
| Oct 1, 2005 | Dec 31, 2005 | MCL | Yes | No | .257 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2005 | - | |
| Oct 1, 2005 | Dec 31, 2005 | MCL | Yes | No | .257 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2005 | - | |
| Dec 1, 2003 | Dec 31, 2003 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2003 | - | |
| Dec 1, 2003 | Dec 31, 2003 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2003 | - | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2003 | - | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2003 | - | |
| Dec 1, 2001 | Dec 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Dec 1, 2001 | Dec 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Aug 1, 2000 | Aug 31, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2000 | - | |
| Aug 1, 2000 | Aug 31, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2000 | - | |
| Apr 1, 2000 | Apr 30, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2000 | - | |
| Apr 1, 2000 | Apr 30, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2000 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Oct 8, 1993 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Oct 8, 1993 | - | |
| Nov 1, 1997 | Nov 30, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Oct 8, 1993 | - | |
| Nov 1, 1997 | Nov 30, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Oct 8, 1993 | - | |
| Dec 1, 1995 | Dec 31, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Oct 8, 1993 | - | |
| Dec 1, 1995 | Dec 31, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Oct 8, 1993 | - | |
| Jul 1, 1993 | Jul 31, 1993 | TT | Yes | No | - | - | - | Resolved | Jul 31, 1993 | - | |
| Jul 1, 1993 | Jul 31, 1993 | TT | Yes | No | - | - | - | Resolved | Jul 31, 1993 | - | |
| - | - | - | 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.