Yocha Dehe Potable Water System
California — Community Water System — PWSID: 090605107
System Information
| PWSID | 090605107 |
| System Name | Yocha Dehe Potable Water System |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Nov 8, 1985 |
| Last Reported | Dec 31, 2025 |
Location & Contact
| State | California |
| City | Brooks |
| ZIP Code | 95606 |
| Address | P.O. Box 18 |
| Organization | Yocha Dehe Wintun Nation |
| Phone | 5307963400 |
Population & Service
| Population Served | 12,800 |
| Service Connections | 56 |
Drinking Water Violations (12)
This water system has 12 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, 2023 | Sep 30, 2023 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Resolved | Sep 30, 2023 | Radionuclides and Revised Rad Rule |
| Jul 1, 2023 | Sep 30, 2023 | Combined Radium (-226 and -228) | MR | No | Yes | — | 5 pCi/L | — | Resolved | Sep 30, 2023 | Radionuclides and Revised Rad Rule |
| Jul 1, 2023 | Sep 30, 2023 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Resolved | Sep 30, 2023 | Radionuclides and Revised Rad Rule |
| Jan 1, 2015 | Dec 31, 2015 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2015 | Dec 31, 2015 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2007 | Apr 30, 2007 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2007 | Total Coliform Rule |
| Aug 1, 2005 | Aug 31, 2005 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2005 | Total Coliform Rule |
| Jul 1, 2005 | Jul 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | Total Coliform Rule |
| — | — | — | 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.