Pasco, WA · Benton County

RED MOUNTAIN WATER ASSOCIATION 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): WA5306091
System type: Community Water System
Population served: 200
Service connections: 87
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
LASSO
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Simazine
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Toxaphene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
BHC-GAMMA
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Picloram
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Chlordane
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor epoxide
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Endrin
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Styrene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Toluene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Benzene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Nickel
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Mercury
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Fluoride
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
CYANIDE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Chromium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Cadmium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Barium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Arsenic
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Nitrite
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Selenium
January 1, 2023 – December 31, 2025
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2015 – September 3, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Benzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Toluene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Ethylbenzene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Styrene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Styrene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Toluene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Benzene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Benzene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Toluene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Styrene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2006 – November 30, 2006
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2005 – October 31, 2005
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Toluene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Benzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2003 – August 31, 2003
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 1998 – December 31, 1998
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 1997 – January 31, 1997
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1995 – August 31, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1994 – September 30, 1994
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, 2025 – September 30, 2025	Monitoring, Regular	LASSO	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Simazine	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Toxaphene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Methoxychlor	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Picloram	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Chlordane	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Heptachlor epoxide	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Heptachlor	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Endrin	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Styrene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Toluene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Benzene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Nickel	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Mercury	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Fluoride	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	CYANIDE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Chromium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Cadmium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Barium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Arsenic	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Nitrite	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Selenium	—	Archived
July 1, 2015 – September 3, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
September 1, 2010 – September 30, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Benzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Toluene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Styrene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Styrene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Toluene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Benzene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Benzene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Toluene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Styrene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Nitrate	—	Resolved
November 1, 2006 – November 30, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 2005 – October 31, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 2005 – December 31, 2007	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Toluene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Benzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Styrene	—	Resolved
August 1, 2003 – August 31, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
December 1, 1998 – December 31, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 1997 – January 31, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 1995 – August 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1994 – September 30, 1994	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 2, 2025State Compliance achieved20 linked violations
October 2, 2025State Compliance achieved15 linked violations
October 2, 2025State Compliance achieved5 linked violations
September 3, 2015State Compliance achieved1 linked violation
January 1, 2011State Compliance achieved40 linked violations
October 31, 2010State Compliance achieved1 linked violation
June 28, 2010State Compliance achieved1 linked violation
June 6, 2008State Compliance achieved54 linked violations
June 6, 2008State Compliance achieved3 linked violations
January 1, 2008State Compliance achieved7 linked violations
January 1, 2008State Compliance achieved13 linked violations
January 1, 2008State Compliance achieved10 linked violations

Contact

RED MOUNTAIN WATER ASSOCIATION

Phone not on record

Pasco, WA 99302