Drinking Water Compliance OS

Carnation, WA · King County

LAKE MARGARET WATER SYSTEM Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Washington’s official records. Always confirm current status with Washington before making decisions based on this information.

System facts

System ID (PWSID)
WA5344200
System type
Community Water System
Population served
406
Service connections
152
Ownership
privately owned
Water source
surface water (rivers, lakes, or reservoirs)

Violation history

  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2025 – October 8, 2025

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2024 – March 31, 2024

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Styrene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Toluene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Benzene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    October 1, 2023 – December 31, 2023

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    October 1, 2023 – December 31, 2023

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2023 – October 6, 2023

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2018 – December 20, 2018

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2017 – September 28, 2017

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2015 – September 17, 2015

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2013 – October 14, 2013

    Resolved
  • Treatment Technique (SWTR and GWR)

    Health-based

    Surface Water Treatment Rule

    June 1, 2009 – June 30, 2009

    Archived
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Beryllium, Total

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Selenium

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Nickel

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Fluoride

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    CYANIDE

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Chromium

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Barium

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 2006 – December 31, 2006

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2002 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Nitrate

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Arsenic

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Barium

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Cadmium

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Chromium

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Fluoride

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Mercury

    October 1, 1979 – October 31, 1979

    Archived
  • Monitoring, Regular

    Selenium

    October 1, 1979 – October 31, 1979

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Contact

LAKE MARGARET WATER SYSTEM

Phone not on record

Carnation, WA 98014