Public Water Partners

Montesano, WA · Grays Harbor County

MONTESANO CITY OF Water System

Consumer Confidence Report status

MONTESANO CITY OF must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for MONTESANO CITY OF.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
WA5356000
System type
Community Water System
Population served
6,204
Service connections
2,257
Ownership
local government
Water source
groundwater (wells)

MONTESANO CITY OF is one of 112 community water systems in Washington in the 3,301 to 10,000 people size category, serving 6,204 people from groundwater.

As of August 1, 2026, its federal record holds 9 entries between 1979 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.

Of the 9, 6 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, the Total Coliform Rules, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

  • Monitoring and Reporting (DBP)

    —

    TTHM

    January 1, 2022 – December 31, 2022

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2012 – October 19, 2012

    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, Acute (TCR)

    Health-based

    Coliform (TCR)

    November 1, 2006 – November 30, 2006

    Archived

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    April 1, 2004 – April 30, 2004

    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

Common questions

Is MONTESANO CITY OF required to publish a Consumer Confidence Report?

Yes. MONTESANO CITY OF is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MONTESANO CITY OF’s next Consumer Confidence Report due?

MONTESANO CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does MONTESANO CITY OF have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for MONTESANO CITY OF.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

MONTESANO CITY OF

Phone not on record

Montesano, WA 98563