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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Sardis Lone Elm WSC

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

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND130ND
2015ND80ND
2016ND50ND
2017ND60ND
2018ND60ND
2019ND50ND

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
2014-02-122973352ND
2014-02-122973030ND
2014-02-122973568ND
2014-02-122973091ND
2014-02-122972999ND
2014-02-122972960ND
2014-04-28Q1413518010ND
2014-04-28Q1413518013ND
2014-11-193142402ND
2014-11-193142447ND
2014-11-193142563ND
2014-11-203143692ND
2014-11-203143878ND
2015-04-20Q1514635021ND
2015-04-20Q1514635020ND
2015-04-20Q1514635017ND
2015-04-20Q1514635016ND
2015-04-20Q1514635014ND
2015-07-22Q1528430001ND
2015-09-10Q1535233002ND
2015-11-19Q1546073006ND
2016-01-25Q1603127004ND
2016-01-25Q1603127001ND
2016-01-25Q1603127008ND
2016-10-27Q1645955004ND
2016-10-27Q1645955001ND
2017-04-06Q1714243035ND
2017-04-06Q1714243028ND
2017-04-06Q1714243033ND
2017-04-06Q1714243026ND
2017-04-06Q1714243032ND
2017-10-16Q1753055001ND
2018-01-11Q1801694020ND
2018-01-11Q1801694018ND
2018-01-11Q1801694017ND
2018-01-11Q1801694015ND
2018-01-11Q1801694012ND
2018-08-27Q1834176002ND
2019-04-18Q1915875003ND
2019-04-18Q1915875008ND
2019-04-18Q1915875020ND
2019-04-18Q1915875005ND
2019-04-18Q1915875017ND