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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Lakewood Water District

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.

MORE ABOUT THIS CONTAMINANT

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND100ND
2014ND10ND
2015ND20ND
2016ND40ND
2017ND10ND
2018ND80ND
2019ND110ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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

Date Lab ID Result
2013-05-07201305080343AMND
2013-05-07201305080435AMND
2013-05-07201305080351AMND
2013-05-08201305090196AMND
2013-05-08201305090180AMND
2013-10-22201310230473AMND
2013-10-22201310230471AMND
2013-10-22201310230501AMND
2013-10-23201310240333AMND
2013-10-23201310240533AMND
2014-07-1673795ND
2015-07-0975137ND
2015-07-0975134ND
2016-07-25ND
2016-07-25ND
2016-07-25ND
2016-07-25ND
2017-08-18ND
2018-03-22ND
2018-07-12ND
2018-07-12ND
2018-07-12ND
2018-07-25ND
2018-07-25ND
2018-07-25ND
2018-08-27ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-06-21ND
2019-06-21ND
2019-06-21ND
2019-06-21ND
2019-07-23ND