Bellingham, WA · Whatcom County

MOUNT BAKER 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): WA5356500
System type: Community Water System
Population served: 500
Service connections: 229
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
April 1, 2022 – April 30, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2018 – June 30, 2018
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
January 1, 2016 – January 31, 2016
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 2014 – October 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2011 – September 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Chromium
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Nickel
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Selenium
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Barium
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Mercury
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2006 – November 30, 2006
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2006 – July 31, 2006
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Benzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Toluene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Barium
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Chromium
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Mercury
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Nickel
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Selenium
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2004 – October 31, 2004
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2003 – November 30, 2003
Archived
Monitoring, Regular
—
Fluoride
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Barium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Chromium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Mercury
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Nickel
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Selenium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Barium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Cadmium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Chromium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
CYANIDE
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Mercury
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Nickel
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Selenium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Barium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Cadmium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Chromium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
CYANIDE
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Fluoride
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Mercury
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Nickel
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Selenium
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2010
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2002 – December 31, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2000 – August 31, 2000
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1999 – October 31, 1999
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 1993 – February 28, 1993
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
January 1, 1993 – January 31, 1993
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1991 – October 31, 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
April 1, 2022 – April 30, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 2018 – June 30, 2018	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2016 – January 31, 2016	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2014 – October 31, 2014	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2011 – September 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2010 – March 31, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Chromium	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Nickel	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Selenium	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Barium	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Mercury	—	Resolved
November 1, 2006 – November 30, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
July 1, 2006 – July 31, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Benzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Toluene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Styrene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Barium	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Chromium	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Mercury	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Nickel	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Selenium	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 2004 – October 31, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 2003 – November 30, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Fluoride	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Barium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Chromium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Mercury	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Nickel	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Selenium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2002 – December 31, 2010	Monitoring, Regular	Arsenic	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Barium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Cadmium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Chromium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	CYANIDE	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Mercury	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Nickel	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Selenium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Barium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Cadmium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Chromium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	CYANIDE	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Fluoride	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Mercury	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Nickel	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Selenium	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2002 – December 31, 2010	Monitoring, Regular	Thallium, Total	—	Archived
August 1, 2000 – August 31, 2000	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 1999 – October 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 1993 – February 28, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 1993 – January 31, 1993	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1991 – October 31, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

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

Enforcement actions

June 26, 2025State Compliance achieved1 linked violation
May 24, 2022State Compliance achieved1 linked violation
July 2, 2018State Compliance achieved1 linked violation
January 31, 2016State Compliance achieved1 linked violation
August 20, 2015State Compliance achieved35 linked violations
October 31, 2014State Compliance achieved1 linked violation
April 4, 2013State Compliance achieved6 linked violations
October 31, 2011State Compliance achieved1 linked violation
April 30, 2010State Compliance achieved1 linked violation
August 31, 2000State Public Notification received12 linked violations
May 31, 1992State Violation/Reminder Notice1 linked violation
March 31, 1992State Violation/Reminder Notice1 linked violation

Contact

MOUNT BAKER WATER ASSOCIATION

Phone not on record

Bellingham, WA 98226