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CAL-WATER SERVICE CO.-CHICO

California — Community Water System — PWSID: CA0410002

System Information

PWSIDCA0410002
System NameCAL-WATER SERVICE CO.-CHICO
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CitySAN JOSE
ZIP Code95112
Address1720 NORTH FIRST STREET
OrganizationHENRIE, TARRAH
Phone408-367-8490

Population & Service

Population Served114,925
Service Connections30,396

Drinking Water Violations (10)

This water system has 10 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
Sep 1, 2002 Sep 30, 2002 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2002 Total Coliform Rule
Sep 1, 2002 Sep 30, 2002 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 2002 Total Coliform Rule
Dec 1, 1998 Dec 31, 1998 Tetrachloroethylene MCL Yes No .032 MG/L 0.005 mg/L .005 Resolved Dec 31, 1998 Volatile Organic Chemicals
Dec 1, 1998 Dec 31, 1998 Tetrachloroethylene MCL Yes No .032 MG/L 0.005 mg/L .005 Resolved Dec 31, 1998 Volatile Organic Chemicals
Nov 1, 1992 Dec 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1992 Total Coliform Rule
Nov 1, 1992 Dec 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1992 Total Coliform Rule
Nov 1, 1992 Dec 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1992 Total Coliform Rule
Oct 1, 1992 Nov 30, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 1992 Total Coliform Rule
Sep 1, 1992 Oct 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 1992 Total Coliform Rule
— — — 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.

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