Montesano, WA · Grays Harbor County

MONTESANO CITY 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): WA5356000
System type: Community Water System
Population served: 6,204
Service connections: 2,257
Ownership: local government
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2022 – December 28, 2022
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2022 – December 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
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, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1992 – August 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)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2022 – December 28, 2022	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2012 – October 19, 2012	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2007 – December 31, 2007	Monitoring, Regular	Diquat	—	Resolved
July 1, 2007 – September 30, 2007	Monitoring, Regular	Diquat	—	Resolved
April 1, 2007 – June 30, 2007	Monitoring, Regular	Diquat	—	Resolved
January 1, 2007 – March 31, 2007	Monitoring, Regular	Diquat	—	Resolved
November 1, 2006 – November 30, 2006	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 2004 – April 30, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 1992 – August 31, 1992	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

October 3, 2023State Compliance achieved1 linked violation
October 3, 2023State Compliance achieved1 linked violation
December 28, 2022State Compliance achieved1 linked violation
October 19, 2012State Compliance achieved1 linked violation
January 1, 2008State Compliance achieved103 linked violations
January 1, 2008State Compliance achieved6 linked violations
January 1, 2008State Compliance achieved116 linked violations
October 31, 1992State Violation/Reminder Notice1 linked violation
August 31, 1992State Violation/Reminder Notice1 linked violation

Contact

MONTESANO CITY OF

Phone not on record

Montesano, WA 98563