Pasco, WA · Benton County

Great Basin Water Kiona 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): WA5310724
System type: Community Water System
Population served: 520
Service connections: 221
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Styrene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Toluene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Benzene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2020 – December 31, 2020
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2019 – August 10, 2022
Resolved
Monitoring, Regular
—
Styrene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Toluene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Benzene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2018 – March 31, 2018
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2014 – December 31, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – August 16, 2011
Resolved
Monitoring, Regular
—
Styrene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Toluene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Benzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – November 8, 2010
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Styrene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Ethylbenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Toluene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Benzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Diquat
January 1, 2005 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2004 – July 31, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 2004 – March 31, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1996 – June 30, 1996
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
September 1, 2023 – September 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Styrene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Toluene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Benzene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2019 – August 10, 2022	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Styrene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Toluene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Benzene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2018 – March 31, 2018	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Nitrate	—	Resolved
July 1, 2011 – August 16, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Styrene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Toluene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Benzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2010 – November 8, 2010	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Styrene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Toluene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Benzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Diquat	—	Resolved
July 1, 2004 – July 31, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
March 1, 2004 – March 31, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1999 – July 31, 1999	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 1996 – June 30, 1996	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

October 25, 2023State Compliance achieved1 linked violation
October 26, 2022State Compliance achieved20 linked violations
August 10, 2022State Compliance achieved1 linked violation
December 7, 2021State Compliance achieved1 linked violation
October 31, 2018State Compliance achieved1 linked violation
September 26, 2018State Compliance achieved20 linked violations
December 21, 2015State Compliance achieved1 linked violation
November 21, 2013State Compliance achieved1 linked violation
November 20, 2012State Compliance achieved1 linked violation
August 16, 2011State Compliance achieved1 linked violation
January 1, 2011State Compliance achieved20 linked violations
December 28, 2010State Compliance achieved20 linked violations
November 8, 2010State Compliance achieved1 linked violation
July 1, 2009State Compliance achieved44 linked violations
July 1, 2009State Compliance achieved20 linked violations
July 1, 2009State Compliance achieved47 linked violations
July 1, 2009State Compliance achieved242 linked violations
January 1, 2008State Compliance achieved1 linked violation
January 1, 2008State Compliance achieved2 linked violations
January 1, 2008State Compliance achieved341 linked violations

Contact

Great Basin Water Kiona

Phone not on record

Pasco, WA 99301