USBR-ADMIN CENTER
California - Transient Non-Community - PWSID: CA5500265
System Information
| PWSID | CA5500265 |
| System Name | USBR-ADMIN CENTER |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 17, 1996 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | SONORA |
| ZIP Code | 95370 |
| Address | 6850 Studhorse Flat road |
| Organization | LUNA, JASON |
| Phone | 916-895-9948 |
Population & Service
| Population Served | 100 |
| Service Connections | 3 |
Drinking Water Violations (9)
This water system has 9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2016 | Jul 31, 2016 | MON | No | No | - | - | - | Resolved | Jul 31, 2016 | - | |
| Jul 1, 2016 | Jul 31, 2016 | MON | No | No | - | - | - | Resolved | Jul 31, 2016 | - | |
| Nov 1, 2015 | Nov 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2015 | - | |
| Nov 1, 2015 | Nov 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2015 | - | |
| May 1, 2005 | May 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2005 | - | |
| May 1, 2005 | May 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2005 | - | |
| Jul 1, 2003 | Aug 31, 2003 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2003 | - | |
| - | - | - | 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.