Langley, WA · Island County

WEST DEER LAKE #1 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): WA5300615
System type: Community Water System
Population served: 24
Service connections: 18
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Picloram
October 1, 2025 – December 31, 2025
Resolved
Monitoring, Regular
—
Dinoseb
October 1, 2025 – December 31, 2025
Resolved
Monitoring, Regular
—
2,4,5-TP
October 1, 2025 – December 31, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
October 1, 2025 – December 31, 2025
Resolved
Monitoring, Regular
—
Dalapon
October 1, 2025 – December 31, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Toxaphene
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Simazine
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Atrazine
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
LASSO
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor epoxide
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Chlordane
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
BHC-GAMMA
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Endrin
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Endrin
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Pentachlorophenol
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
2,4,5-TP
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Dinoseb
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Picloram
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Dalapon
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Chlordane
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor epoxide
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
LASSO
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Atrazine
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Simazine
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Toxaphene
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
BHC-GAMMA
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Picloram
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Styrene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Toluene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Benzene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Chlordane
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Heptachlor epoxide
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Heptachlor
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
LASSO
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Simazine
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Toxaphene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Methoxychlor
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
BHC-GAMMA
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Endrin
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Dalapon
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Picloram
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Dinoseb
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
2,4,5-TP
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Pentachlorophenol
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Vinyl chloride
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Carbon tetrachloride
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Tetrachloroethylene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Benzene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Toluene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Ethylbenzene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Styrene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Endrin
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
BHC-GAMMA
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Methoxychlor
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Toxaphene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Simazine
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Atrazine
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
LASSO
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Heptachlor
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Heptachlor epoxide
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Regular
—
Chlordane
April 1, 2024 – June 30, 2024
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2024 – May 28, 2025
Resolved
Monitoring, Regular
—
Chlordane
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Heptachlor epoxide
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Heptachlor
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
LASSO
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Atrazine
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Simazine
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Toxaphene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Methoxychlor
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
BHC-GAMMA
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Endrin
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Pentachlorophenol
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
2,4,5-TP
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Dinoseb
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Picloram
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Dalapon
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Styrene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Ethylbenzene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Toluene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Benzene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Vinyl chloride
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Picloram
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2023 – September 30, 2023
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2023 – May 28, 2025
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2022 – December 31, 2022
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – December 31, 2025	Monitoring, Regular	Picloram	—	Resolved
October 1, 2025 – December 31, 2025	Monitoring, Regular	Dinoseb	—	Resolved
October 1, 2025 – December 31, 2025	Monitoring, Regular	2,4,5-TP	—	Resolved
October 1, 2025 – December 31, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
October 1, 2025 – December 31, 2025	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2025 – September 30, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Methoxychlor	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Toxaphene	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Simazine	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Atrazine	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	LASSO	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Heptachlor	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Heptachlor epoxide	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Chlordane	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	BHC-GAMMA	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Endrin	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Methoxychlor	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Endrin	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Pentachlorophenol	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	2,4,5-TP	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Dinoseb	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Picloram	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Dalapon	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Chlordane	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Heptachlor	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	LASSO	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Atrazine	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Simazine	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Toxaphene	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Picloram	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Styrene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Toluene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Benzene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Chlordane	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Heptachlor epoxide	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Heptachlor	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	LASSO	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Simazine	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Toxaphene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Methoxychlor	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Endrin	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Tetrachloroethylene	—	Resolved
June 1, 2024 – June 30, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Dalapon	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Picloram	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Dinoseb	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	2,4,5-TP	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Pentachlorophenol	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Vinyl chloride	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Carbon tetrachloride	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Tetrachloroethylene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Benzene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Toluene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Styrene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Endrin	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	BHC-GAMMA	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Methoxychlor	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Toxaphene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Simazine	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Atrazine	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	LASSO	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Heptachlor	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Heptachlor epoxide	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2024 – May 28, 2025	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Chlordane	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Heptachlor	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	LASSO	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Atrazine	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Simazine	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Toxaphene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Methoxychlor	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	BHC-GAMMA	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Endrin	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Pentachlorophenol	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	2,4,5-TP	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Dinoseb	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Picloram	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Dalapon	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Styrene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Toluene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Benzene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Tetrachloroethylene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	Vinyl chloride	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
October 1, 2023 – December 31, 2023	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Picloram	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2023 – May 28, 2025	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 26, 2026State Compliance achieved5 linked violations
September 30, 2025State Compliance achieved1 linked violation
September 9, 2025State Compliance achieved15 linked violations
May 28, 2025State Compliance achieved2 linked violations
March 27, 2025State Compliance achieved45 linked violations
March 27, 2025State Compliance achieved15 linked violations
December 10, 2024State Compliance achieved40 linked violations
July 11, 2024State Compliance achieved1 linked violation
March 29, 2024State Compliance achieved15 linked violations
March 29, 2024State Compliance achieved10 linked violations
March 29, 2024State Compliance achieved20 linked violations
March 27, 2023State Compliance achieved1 linked violation

Contact

WEST DEER LAKE #1

Phone not on record

Langley, WA 98260