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WESTPORT WATER DEPARTMENT

Washington — Community Water System — PWSID: WA5395300

System Information

PWSIDWA5395300
System NameWESTPORT WATER DEPARTMENT
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityWESTPORT
ZIP Code98595
AddressPO BOX 505
OrganizationWESTPORT WATER DEPARTMENT
Phone—

Population & Service

Population Served5,346
Service Connections3,130

Drinking Water Violations (879)

This water system has 879 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
Apr 1, 2025 Jun 30, 2025 Arsenic MCL Yes No .0113 MG/L 0.010 mg/L — Archived Jun 30, 2025 Arsenic Rule
Jan 1, 2025 Mar 31, 2025 Arsenic MCL Yes No .012 MG/L 0.010 mg/L — Archived Mar 31, 2025 Arsenic Rule
Oct 1, 2024 Dec 31, 2024 Arsenic MCL Yes No .0128 MG/L 0.010 mg/L — Archived Dec 31, 2024 Arsenic Rule
Jul 1, 2024 Sep 30, 2024 Arsenic MCL Yes No .0133 MG/L 0.010 mg/L — Archived Sep 30, 2024 Arsenic Rule
Jan 1, 2023 Mar 31, 2023 Arsenic MR No Yes — 0.010 mg/L — Resolved Mar 31, 2023 Arsenic Rule
Apr 1, 2021 Jun 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2021 Arsenic Rule
Oct 1, 2017 Oct 31, 2017 Revised Total Coliform Rule MON No No — — — Resolved Oct 31, 2017 Revised Total Coliform Rule
Jan 1, 2017 Dec 31, 2019 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 31, 2019 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 31, 2019 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2019 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 2019 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Picloram MR No Yes — 0.5 mg/L — Resolved Dec 31, 2019 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2019 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 2019 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Picloram MR No Yes — 0.5 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jul 1, 2009 Sep 30, 2009 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2009 Arsenic Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Jan 1, 2007 Dec 31, 2007 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2007 Nitrate Rule
Apr 1, 2006 Jun 30, 2006 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals
Apr 1, 2006 Jun 30, 2006 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Jun 30, 2006 Volatile Organic Chemicals

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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