Renton, WA · King County

KING COUNTY WATER DISTRICT NO 90 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): WA5341150
System type: Community Water System
Population served: 20,100
Service connections: 8,081
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 19, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – August 26, 2021
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Vinyl chloride
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Carbon tetrachloride
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Benzene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Toluene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Ethylbenzene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
Styrene
April 1, 2005 – June 30, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Benzene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Toluene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2003 – December 31, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1991 – November 30, 1991
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 19, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2021 – August 26, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Nitrate	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Vinyl chloride	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Benzene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Toluene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 2005 – June 30, 2005	Monitoring, Regular	Styrene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Styrene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Benzene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Toluene	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Nitrate	—	Resolved
November 1, 1991 – November 30, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived

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

Enforcement actions

February 19, 2025State Compliance achieved1 linked violation
August 26, 2021State Compliance achieved1 linked violation
January 1, 2008State Compliance achieved3 linked violations
January 1, 2008State Compliance achieved6 linked violations
August 30, 2005State Compliance achieved60 linked violations
August 30, 2005State Compliance achieved41 linked violations
April 22, 2004State Compliance achieved7 linked violations
July 31, 1992State Violation/Reminder Notice1 linked violation
November 30, 1991State Violation/Reminder Notice1 linked violation

Contact

KING COUNTY WATER DISTRICT NO 90

Phone not on record

Renton, WA 98059