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CARSON

Washington — Community Water System — PWSID: WA5311340

System Information

PWSIDWA5311340
System NameCARSON
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityCARSON
ZIP Code98610
AddressPO BOX 500
OrganizationCARSON
Phone—

Population & Service

Population Served3,015
Service Connections1,183

Drinking Water Violations (576)

This water system has 576 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 Apr 30, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2025 Surface Water Treatment Rule
Apr 1, 2025 Apr 30, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Apr 30, 2025 Surface Water Treatment Rule
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Sep 1, 2023 Sep 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2023 Revised Total Coliform Rule
May 1, 2022 May 31, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2022 Surface Water Treatment Rule
May 1, 2022 May 31, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved May 31, 2022 Revised Total Coliform Rule
May 1, 2022 May 31, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved May 31, 2022 Surface Water Treatment Rule
Jan 1, 2017 Mar 31, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Mar 31, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016 Mar 31, 2016 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016 Mar 31, 2016 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2014 Dec 31, 2014 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2014 Dec 31, 2014 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 — Consumer Confidence Rule Other No No — — — Resolved Dec 10, 2014 Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Oct 1, 2013 Consumer Confidence Rule
Oct 1, 2007 Dec 31, 2007 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfone MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfone MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfone MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Picloram MR No Yes — 0.5 mg/L — Archived Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfone MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfone MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Archived Dec 31, 2007 Volatile Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Aldicarb sulfoxide MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Archived Dec 31, 2007 Volatile Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 BHC-GAMMA MR No Yes — 0.0002 mg/L — Archived Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2007 Synthetic 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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