BLACK DIAMOND, WA · King County

BLACK DIAMOND WATER DEPT 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): WA5307220
System type: Community Water System
Population served: 6,407
Service connections: 2,368
Ownership: local government
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2017 – February 21, 2018
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – November 7, 2016
Resolved
Monitoring, Regular
—
Pentachlorophenol
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
2,4,5-TP
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Dinoseb
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Picloram
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Dalapon
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Chlordane
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Pentachlorophenol
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Heptachlor epoxide
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Heptachlor
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
LASSO
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Atrazine
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Simazine
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Toxaphene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Methoxychlor
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
BHC-GAMMA
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Endrin
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Diquat
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Aldicarb
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Carbofuran
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Aldicarb sulfone
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Aldicarb sulfoxide
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
OXAMYL
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Styrene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Ethylbenzene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Toluene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Benzene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
CHLOROBENZENE
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Tetrachloroethylene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Trichloroethylene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
1,2-Dichloropropane
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Carbon tetrachloride
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
1,2-Dichloroethane
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Vinyl chloride
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
o-Dichlorobenzene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
DICHLOROMETHANE
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
April 1, 2008 – June 30, 2008
Archived
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
OXAMYL
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Aldicarb sulfoxide
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Aldicarb sulfone
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Carbofuran
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Aldicarb
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Dalapon
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Picloram
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Dinoseb
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
2,4,5-TP
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Pentachlorophenol
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Diquat
October 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Vinyl chloride
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Trichloroethylene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Benzene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Toluene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Ethylbenzene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Styrene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Endrin
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
BHC-GAMMA
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Methoxychlor
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Toxaphene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Simazine
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Atrazine
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
LASSO
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Heptachlor
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Heptachlor epoxide
October 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Pentachlorophenol
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Chlordane
October 1, 2007 – December 31, 2007
Archived
Monitoring, Regular
—
Nitrate
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Diquat
January 1, 2005 – December 31, 2007
Archived
Monitoring, Regular
—
Nitrate
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Chlordane
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Pentachlorophenol
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Heptachlor
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
LASSO
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Atrazine
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Simazine
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Toxaphene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Endrin
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Aldicarb
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
OXAMYL
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Pentachlorophenol
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
2,4,5-TP
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Dinoseb
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Picloram
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Dalapon
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Carbofuran
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Styrene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Toluene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Benzene
January 1, 2002 – December 31, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1994 – June 30, 1994
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1993 – June 30, 1993
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1992 – November 30, 1992
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1992 – September 30, 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, 2017 – February 21, 2018	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2016 – November 7, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Pentachlorophenol	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	2,4,5-TP	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Dinoseb	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Picloram	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Dalapon	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Chlordane	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Pentachlorophenol	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Benzo(a)pyrene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Heptachlor epoxide	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Heptachlor	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	LASSO	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Atrazine	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Simazine	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Toxaphene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Methoxychlor	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	BHC-GAMMA	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Endrin	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Diquat	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Aldicarb	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Carbofuran	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Aldicarb sulfone	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	OXAMYL	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Styrene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Ethylbenzene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Toluene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Benzene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	CHLOROBENZENE	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Tetrachloroethylene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Trichloroethylene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Carbon tetrachloride	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	Vinyl chloride	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Archived
April 1, 2008 – June 30, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Benzo(a)pyrene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	OXAMYL	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Aldicarb sulfone	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Aldicarb	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Dalapon	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Picloram	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Dinoseb	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	2,4,5-TP	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Pentachlorophenol	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Diquat	—	Resolved
October 1, 2007 – December 31, 2007	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	DICHLOROMETHANE	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	o-Dichlorobenzene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	p-Dichlorobenzene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Vinyl chloride	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	1,2-Dichloroethane	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Carbon tetrachloride	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	1,2-Dichloropropane	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Trichloroethylene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Tetrachloroethylene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	CHLOROBENZENE	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Benzene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Toluene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Ethylbenzene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Styrene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Endrin	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	BHC-GAMMA	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Methoxychlor	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Toxaphene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Simazine	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Atrazine	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	LASSO	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Heptachlor	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2007 – December 31, 2007	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Pentachlorophenol	—	Archived
October 1, 2007 – December 31, 2007	Monitoring, Regular	Chlordane	—	Archived
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Diquat	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Chlordane	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Pentachlorophenol	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Benzo(a)pyrene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Heptachlor epoxide	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Heptachlor	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	LASSO	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Atrazine	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Simazine	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Toxaphene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	BHC-GAMMA	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Endrin	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Aldicarb	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Aldicarb sulfone	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	OXAMYL	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Pentachlorophenol	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	2,4,5-TP	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Dinoseb	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Picloram	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Dalapon	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Carbofuran	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Styrene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Toluene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Benzene	—	Archived
June 1, 1994 – June 30, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 1993 – June 30, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 1992 – November 30, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1992 – September 30, 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

May 23, 2023State Compliance achieved4 linked violations
February 21, 2018State Compliance achieved1 linked violation
November 7, 2016State Compliance achieved1 linked violation
January 1, 2007State Compliance achieved7 linked violations
January 1, 2007State Compliance achieved8 linked violations
August 17, 1994Federal issued Formal Notice of Violation11 linked violations
January 31, 1992State Violation/Reminder Notice1 linked violation

Contact

BLACK DIAMOND WATER DEPT

Phone not on record

BLACK DIAMOND, WA 98010