Big Valley Rancheria Water District

California - Community Water System - PWSID: 090605164

System Information

PWSID090605164
System NameBig Valley Rancheria Water District
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedJun 19, 2004
Last ReportedMar 25, 2026

Location & Contact

StateCalifornia
CityLakeport
ZIP Code95453
Address2726 Mission Rancheria Road
OrganizationBig Valley Band of Pomo Indians
Phone7072633924

Population & Service

Population Served417
Service Connections49

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.

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