Kelso, WA · Cowlitz County

RYDERWOOD IMPROVEMENT & SERVICE AS 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): WA5375100
System type: Community Water System
Population served: 434
Service connections: 292
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – February 26, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2022 – October 31, 2022
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2022 – June 30, 2022
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – December 22, 2014
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2008 – March 31, 2008
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Benzene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Toluene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Styrene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Selenium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Antimony, Total
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, Regular
—
Barium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Chromium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Nickel
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Mercury
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
2,4-D
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
2,4,5-TP
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Methoxychlor
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Toxaphene
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Endrin
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
BHC-GAMMA
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, 2024 – February 26, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2022 – October 31, 2022	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
June 1, 2022 – June 30, 2022	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2014 – December 22, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
March 1, 2008 – March 31, 2008	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 2007 – December 31, 2007	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Benzene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Toluene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	Styrene	—	Archived
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Selenium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Barium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Chromium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Nickel	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Mercury	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Fluoride	—	Resolved
October 1, 1979 – October 31, 1979	Monitoring, Regular	2,4-D	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	2,4,5-TP	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Methoxychlor	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Toxaphene	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Endrin	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	BHC-GAMMA	—	Archived

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

Enforcement actions

February 26, 2025State Compliance achieved1 linked violation
November 30, 2022State Compliance achieved1 linked violation
September 7, 2022State Violation/Reminder Notice1 linked violation
July 31, 2022State Compliance achieved1 linked violation
December 22, 2014State Compliance achieved1 linked violation
December 31, 2009State Compliance achieved4 linked violations
May 7, 2008State Compliance achieved31 linked violations
May 25, 2005State Compliance achieved11 linked violations

Contact

RYDERWOOD IMPROVEMENT & SERVICE AS

Phone not on record

Kelso, WA 98626