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SEBASTOPOL, CITY OF

California — Community Water System — PWSID: CA4910011

System Information

PWSIDCA4910011
System NameSEBASTOPOL, CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CitySEBASTOPOL
ZIP Code95472
Address714 Johnson Street
OrganizationBILLING, ERIC
Phone707-823-5331

Population & Service

Population Served7,522
Service Connections2,947

Drinking Water Violations (15)

This water system has 15 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, 2009 Dec 31, 2009 Arsenic MCL Yes No .017 MG/L 0.010 mg/L .01 Resolved Dec 31, 2009 Arsenic Rule
Oct 1, 2009 Dec 31, 2009 Arsenic MCL Yes No .017 MG/L 0.010 mg/L .01 Resolved Dec 31, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MCL Yes No .016 MG/L 0.010 mg/L .01 Resolved Sep 30, 2009 Arsenic Rule
Apr 1, 2009 Jun 30, 2009 Arsenic MCL Yes No .011 MG/L 0.010 mg/L .01 Resolved Jun 30, 2009 Arsenic Rule
Apr 1, 2009 Jun 30, 2009 Arsenic MCL Yes No .011 MG/L 0.010 mg/L .01 Resolved Jun 30, 2009 Arsenic Rule
Jan 1, 2009 Mar 31, 2009 Arsenic MCL Yes No .014 MG/L 0.010 mg/L .01 Resolved Mar 31, 2009 Arsenic Rule
Jan 1, 2009 Mar 31, 2009 Arsenic MCL Yes No .014 MG/L 0.010 mg/L .01 Resolved Mar 31, 2009 Arsenic Rule
Oct 1, 2008 Dec 31, 2008 Arsenic MCL Yes No .016 MG/L 0.010 mg/L .01 Resolved Dec 31, 2008 Arsenic Rule
Oct 1, 2008 Dec 31, 2008 Arsenic MCL Yes No .016 MG/L 0.010 mg/L .01 Resolved Dec 31, 2008 Arsenic Rule
Jul 1, 2008 Sep 30, 2008 Arsenic MCL Yes No .02 MG/L 0.010 mg/L .01 Resolved Sep 30, 2008 Arsenic Rule
May 1, 2008 May 31, 2008 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2008 Total Coliform Rule
May 1, 2008 May 31, 2008 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2008 Total Coliform Rule
Nov 1, 2006 Nov 30, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2006 Total Coliform Rule
Aug 1, 1988 Aug 31, 1988 Other No No — — — Archived Aug 31, 1988 Miscellaneous Other Rules
Jul 1, 1988 Jul 31, 1988 Other No No — — — Archived Jul 31, 1988 Miscellaneous Other Rules

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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