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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Highland Village

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
2014ND140ND
2015ND60ND
2016ND80ND
2017ND50ND
2018ND50ND
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
2014-05-20Q1416948009ND
2014-05-20Q1416948011ND
2014-05-20Q1416948007ND
2014-05-20Q1416948005ND
2014-05-20Q1416948002ND
2014-08-18Q1437308024ND
2014-08-18Q1437308010ND
2014-08-18Q1437308019ND
2014-08-18Q1437308020ND
2014-08-18Q1437308022ND
2014-11-11Q1455360001ND
2014-11-11Q1455360007ND
2014-11-11Q1455360005ND
2014-11-11Q1455360003ND
2015-02-18Q1506440001ND
2015-06-09Q1521357009ND
2015-06-09Q1521357008ND
2015-08-13Q1532069009ND
2015-08-13Q1532069006ND
2015-08-13Q1532069005ND
2016-03-16Q1611305003ND
2016-06-07Q1622614016ND
2016-06-07Q1622614004ND
2016-06-07Q1622614001ND
2016-06-27Q1625972004ND
2016-06-27Q1625972002ND
2016-09-02Q1635674005ND
2016-10-19Q1644917003ND
2017-06-15Q1725217021ND
2017-06-15Q1725217022ND
2017-06-15Q1725217024ND
2017-06-15Q1725217002ND
2017-10-12Q1752251006ND
2018-06-13Q1823500010ND
2018-06-13Q1823500007ND
2018-06-13Q1823500005ND
2018-06-13Q1823500003ND
2018-06-13Q1823500001ND
2019-08-08Q1953062020ND
2019-08-08Q1953062028ND
2019-08-08Q1953062026ND
2019-08-08Q1953062024ND
2019-08-08Q1953062022ND