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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Beacon City

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
2013ND10ND
2014ND80ND
2015N/A00N/A
2016ND60ND
2017ND80ND
2018ND60ND
2019ND80ND

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
2013-12-1935120499001AMND
2014-03-2035131071001AMND
2014-04-02420-76358-1ND
2014-04-29420-77175-2ND
2014-04-29420-77175-3ND
2014-04-29420-77175-1ND
2014-05-28420-78159-1ND
2014-06-1735142524001AMND
2014-09-2235156161001AMND
2016-05-25CB161094ND
2016-11-29CB164133ND
2016-11-29CB164134ND
2016-11-29CB164132ND
2016-11-29CB164135ND
2016-11-29CB164131ND
2017-01-27CB170252ND
2017-01-27CB170251ND
2017-01-27CB170253ND
2017-11-29CB172978ND
2017-11-29CB172977ND
2017-11-29CB172976ND
2017-11-29CB172980ND
2017-11-29CB172979ND
2018-11-28CB182677ND
2018-11-28CB182679ND
2018-11-28CB182680ND
2018-11-28CB182678ND
2018-12-07CB182842ND
2018-12-07CB182841ND
2019-01-1619A0608-01ND
2019-01-1619A0608-02ND
2019-04-16CB190937ND
2019-07-1719G0769-01ND
2019-10-23CB192646ND
2019-10-23CB192647ND
2019-10-23CB192648ND
2019-10-23CB192649ND