Big Valley Rancheria Water District
California - Community Water System - PWSID: 090605164
System Information
| PWSID | 090605164 |
| System Name | Big Valley Rancheria Water District |
| 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 | Jun 19, 2004 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | California |
| City | Lakeport |
| ZIP Code | 95453 |
| Address | 2726 Mission Rancheria Road |
| Organization | Big Valley Band of Pomo Indians |
| Phone | 7072633924 |
Population & Service
| Population Served | 417 |
| Service Connections | 49 |
Drinking Water Violations (143)
This water system has 143 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, 2025 | Dec 31, 2025 | MR | No | Yes | - | 1 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jul 1, 2018 | Dec 31, 2018 | MR | No | No | - | TT | - | Resolved | Dec 31, 2018 | - | |
| May 1, 2004 | May 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2004 | - | |
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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.