HERMISTON, OR · Morrow County

BLACK MOUNTAIN WATER DISTRICT 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 Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.

System facts

System ID (PWSID): OR4100370
System type: Community Water System
Population served: 43
Service connections: 88
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2025 – December 31, 2025
Archived
Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2025 – December 31, 2025
Archived
Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2025 – December 31, 2025
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2024 – November 30, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2023 – September 30, 2023
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – July 21, 2023
Resolved
Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2021 – December 31, 2021
Resolved
Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2021 – December 31, 2021
Resolved
Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 1, 2017 – December 30, 2019
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
September 29, 2017 – February 7, 2019
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
May 6, 2017 – June 23, 2017
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2017 – October 8, 2019
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Barium
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Chromium
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Mercury
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Nickel
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Selenium
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Benzene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Toluene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Styrene
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 2015 – September 30, 2015
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 24, 2015 – July 24, 2015
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2015 – February 28, 2015
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
December 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2013 – October 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2013 – June 30, 2013
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
May 1, 2013 – May 31, 2013
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 24, 2012 – October 23, 2012
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 27, 2010 – October 23, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 2010 – July 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2010 – June 30, 2010
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2010 – November 8, 2010
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
December 1, 2009 – December 31, 2009
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 2008 – January 31, 2008
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2007 – December 31, 2007
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 2007 – April 30, 2007
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
March 1, 2007 – March 31, 2007
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Chromium
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Simazine
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 2001 – March 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2000 – September 30, 2000
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
April 1, 2000 – June 30, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1999 – March 31, 1999
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1998 – June 30, 1998
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1997 – September 30, 1997
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1997 – June 30, 1997
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1997 – March 31, 1997
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1996 – December 31, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1996 – June 30, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1995 – March 31, 1995
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1993 – September 30, 1993
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
April 1, 1993 – June 30, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1991 – December 31, 1991
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2025 – December 31, 2025	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Archived
January 1, 2025 – December 31, 2025	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Archived
January 1, 2025 – December 31, 2025	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Archived
November 1, 2024 – November 30, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
September 1, 2023 – September 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2023 – July 21, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2021 – December 31, 2021	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Resolved
January 1, 2021 – December 31, 2021	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Resolved
January 1, 2021 – December 31, 2021	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Resolved
October 1, 2017 – December 30, 2019	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
September 29, 2017 – February 7, 2019	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
May 6, 2017 – June 23, 2017	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2017 – October 8, 2019	Monitoring, Regular	Nitrite	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Barium	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Chromium	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Mercury	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Nickel	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Selenium	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Benzene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Toluene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Styrene	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
September 1, 2015 – September 30, 2015	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 24, 2015 – July 24, 2015	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
February 1, 2015 – February 28, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2013 – October 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2013 – June 30, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2013 – May 31, 2013	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
August 24, 2012 – October 23, 2012	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
August 27, 2010 – October 23, 2012	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2010 – July 31, 2010	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
June 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2010 – November 8, 2010	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
December 1, 2009 – December 31, 2009	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – January 31, 2008	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Nitrate	—	Resolved
December 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2007 – April 30, 2007	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
March 1, 2007 – March 31, 2007	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Chromium	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Simazine	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2001 – March 31, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 2000 – September 30, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2000 – June 30, 2000	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
March 1, 1999 – March 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 1998 – June 30, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Nitrate	—	Resolved
September 1, 1997 – September 30, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 1997 – June 30, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 1997 – March 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 1996 – December 31, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 1996 – June 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 1995 – March 31, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1993 – September 30, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1993 – June 30, 1993	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
December 1, 1991 – December 31, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

No enforcement actions on record for this system.

Contact

BLACK MOUNTAIN WATER DISTRICT

541-720-0514

HERMISTON, OR 97838