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WILLITS, CITY OF

California — Community Water System — PWSID: CA2310004

System Information

PWSIDCA2310004
System NameWILLITS, CITY OF
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityWILLITS
ZIP Code95490
Address111 East Commercial St
OrganizationHERMAN, SCOTT
Phone707-459-7129

Population & Service

Population Served6,175
Service Connections2,399

Drinking Water Violations (28)

This water system has 28 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
Oct 1, 2015 Dec 31, 2015 TTHM MCL Yes No .0897 MG/L 0.080 mg/L .08 Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 TTHM MCL Yes No .0897 MG/L 0.080 mg/L .08 Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No .0951 MG/L 0.080 mg/L .08 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No .0951 MG/L 0.080 mg/L .08 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No .0896 MG/L 0.080 mg/L .08 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No .0896 MG/L 0.080 mg/L .08 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MCL Yes No .087 MG/L 0.080 mg/L .08 Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MCL Yes No .087 MG/L 0.080 mg/L .08 Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 TTHM MCL Yes No .085 MG/L 0.080 mg/L .08 Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 TTHM MCL Yes No .085 MG/L 0.080 mg/L .08 Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MCL Yes No .066 MG/L 0.060 mg/L .06 Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MCL Yes No .066 MG/L 0.060 mg/L .06 Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Total Haloacetic Acids (HAA5) MCL Yes No .065 MG/L 0.060 mg/L .06 Resolved Jun 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Total Haloacetic Acids (HAA5) MCL Yes No .065 MG/L 0.060 mg/L .06 Resolved Jun 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2012 Apr 30, 2012 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Apr 30, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2012 Apr 30, 2012 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Apr 30, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Aug 1, 2011 Aug 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2011 Total Coliform Rule
Aug 1, 2011 Aug 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2011 Total Coliform Rule
Jan 1, 2008 Jan 31, 2008 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Jan 14, 2008 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2008 Jan 31, 2008 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Jan 14, 2008 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2008 Jan 31, 2008 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Jan 14, 2008 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jan 1, 2008 Jan 31, 2008 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Jan 14, 2008 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 1992 Dec 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1992 Total Coliform Rule
Dec 1, 1992 Dec 31, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 1992 Total Coliform Rule

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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