Drinking Water Compliance OS

Winthrop, WA · Okanogan County

WINTHROP TOWN OF 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)
WA5397750
System type
Community Water System
Population served
1,350
Service connections
484
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    December 1, 2024 – December 31, 2024

    Resolved
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    August 1, 2024 – August 31, 2024

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2024 – February 19, 2025

    Resolved
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    June 1, 2024 – June 30, 2024

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2024 – December 31, 2024

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    January 1, 2022 – September 30, 2025

    Resolved
  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    January 1, 2018 – January 31, 2018

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2016 – November 1, 2016

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2011 – November 7, 2011

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2009 – December 31, 2009

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    January 1, 2009 – December 31, 2009

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    November 1, 2003 – November 30, 2003

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    July 1, 2003 – July 31, 2003

    Archived
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 2000 – September 30, 2000

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    October 1, 1992 – October 31, 1992

    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)

Enforcement actions

Contact

WINTHROP TOWN OF

Phone not on record

Winthrop, WA 98862