Drinking Water Compliance OS

Sunnyside, WA · Yakima County

SUNNYSIDE CITY OF Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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)
WA5385400
System type
Community Water System
Population served
17,194
Service connections
5,456
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2025 – September 25, 2025

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    January 1, 2025 – December 31, 2025

    Archived

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2025 – December 31, 2025

    Archived

  • Monitoring, Routine (RTCR)

    —

    Revised Total Coliform Rule

    February 1, 2024 – February 29, 2024

    Resolved

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    January 1, 2023

    Unaddressed

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2017 – December 31, 2017

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    January 1, 2017 – December 31, 2017

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    October 1, 2014 – December 31, 2014

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    October 1, 2014 – December 31, 2014

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    July 1, 2014 – September 30, 2014

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    July 1, 2014 – September 30, 2014

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    April 1, 2014 – June 30, 2014

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    April 1, 2014 – June 30, 2014

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) phthalate

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 2014 – December 31, 2022

    Resolved

  • Monitoring, Regular

    —

    Diquat

    October 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Diquat

    July 1, 2007 – September 30, 2007

    Resolved

  • Monitoring, Regular

    —

    Diquat

    April 1, 2007 – June 30, 2007

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 2007 – March 31, 2007

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    October 1, 1997 – October 31, 1997

    Archived

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 1995 – September 30, 1995

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    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)Unaddressed no corrective action on record yet

Enforcement actions

Contact

SUNNYSIDE CITY OF

Phone not on record

Sunnyside, WA 98944