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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Beverly Hills Water Department

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND70ND
2015ND70ND
2016ND40ND
2017ND10ND

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
2012-11-089469-014-0415ND
2012-11-089469-012-0440ND
2012-11-089469-015-0345ND
2012-12-319469-013-1000ND
2013-11-079469-014-0010ND
2013-11-079469-012-0115ND
2013-11-079469-013-0045ND
2013-11-079469-015-0245ND
2014-11-139469-015-0812ND
2014-11-139469-012-0850ND
2014-11-139469-013-0920ND
2014-11-139469-014-0945ND
2014-12-29201412290331AMND
2014-12-29201412290329AMND
2014-12-29201412290327AMND
2015-03-05201503050470AMND
2015-06-09201506090393AMND
2015-09-10201509100707AMND
2015-10-139469-013-0747ND
2015-10-139469-014-0808ND
2015-10-139469-015-0840ND
2015-10-139469-012-0725ND
2016-11-219469-014-1002ND
2016-11-219469-013-0947ND
2016-11-219469-015-1019ND
2016-11-219469-012-0924ND
2017-10-129469-014-0805ND