Lynden, WA · Whatcom County

LYNDEN WATER DEPARTMENT 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): WA5349150
System type: Community Water System
Population served: 17,969
Service connections: 7,785
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2025 – July 31, 2025
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2023 – December 31, 2023
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 2009 – December 31, 2009
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 2009 – December 31, 2009
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2009 – September 30, 2009
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 2009 – June 30, 2009
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 2009 – March 31, 2009
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 2008 – December 31, 2008
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2008 – September 30, 2008
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2007 – September 30, 2007
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 2007 – June 30, 2007
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2006 – August 31, 2006
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 2005 – June 30, 2005
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 2005 – March 31, 2005
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Arsenic
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Barium
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Cadmium
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Chromium
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Fluoride
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Mercury
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Nitrate
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Selenium
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, 2025 – July 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
December 1, 2023 – December 31, 2023	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 1, 2006 – August 31, 2006	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 2005 – June 30, 2005	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 2005 – March 31, 2005	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Arsenic	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Barium	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Cadmium	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Chromium	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Fluoride	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Mercury	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Nitrate	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Selenium	—	Archived

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

Enforcement actions

August 31, 2025State Compliance achieved1 linked violation
January 2, 2024State Compliance achieved1 linked violation
January 2, 2024State Violation/Reminder Notice1 linked violation
January 31, 1992State Violation/Reminder Notice2 linked violations

Contact

LYNDEN WATER DEPARTMENT

Phone not on record

Lynden, WA 98264