Know Your Environment. Protect Your Health.

Chloromethane

City of Oak Harbor

NOTE: City of Oak Harbor purchases water from City of Anacortes which is required to test for chloromethane. Sample information shown below was taken by City of Anacortes.

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND20ND
2014ND20ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND10ND
2020N/A00N/A
2021ND20ND
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

NOTE: City of Oak Harbor purchases water from City of Anacortes which is required to test for chloromethane. Sample information shown below was taken by City of Anacortes.

Date Lab ID Result
2013-04-30WA97-SE1-13-07002-16289ND
2018-07-16ND
2019-07-24ND
2019-07-24ND