Drinking Water Compliance OS

Yakima, WA · Yakima County

COWICHE WATER ASSOCIATION 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)
WA5304316
System type
Community Water System
Population served
48
Service connections
18
Ownership
privately owned
Water source
groundwater (wells)

Violation history

  • Monitoring, Routine (RTCR)

    —

    Revised Total Coliform Rule

    July 1, 2023 – July 31, 2023

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2019 – October 11, 2019

    Resolved

  • Monitoring, Routine (RTCR)

    —

    Revised Total Coliform Rule

    June 1, 2019 – June 30, 2019

    Resolved

  • Monitoring, Routine (RTCR)

    —

    Revised Total Coliform Rule

    September 1, 2018 – September 30, 2018

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Styrene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    December 1, 2004 – December 31, 2004

    Archived

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Arsenic

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Barium

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Cadmium

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Chromium

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    CYANIDE

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Fluoride

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Mercury

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Nickel

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Selenium

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Beryllium, Total

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Thallium, Total

    January 1, 2002 – December 31, 2004

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    December 1, 1999 – December 31, 1999

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    September 1, 1998 – September 30, 1998

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    March 1, 1998 – March 31, 1998

    Archived

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    February 1, 1998 – February 28, 1998

    Archived

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    August 1, 1995 – August 31, 1995

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    June 1, 1995 – June 30, 1995

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    April 1, 1995 – April 30, 1995

    Archived

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

Enforcement actions

Contact

COWICHE WATER ASSOCIATION

Phone not on record

Yakima, WA 98908