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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Highland Links Colony

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-04-16A401710001ND
2014-05-29A402955001ND
2014-07-22A405235001ND
2014-11-26A409360001ND
2015-03-17A501190001ND
2015-04-23A501911001ND
2015-07-28A505851001ND
2015-10-27A509096001ND
2016-02-03B600541001ND
2016-05-18B602979001ND
2016-09-13B608670001ND
2016-11-16B610270001ND
2017-02-23B700817001ND
2017-04-13B701721001ND
2017-07-24B705891001ND
2017-11-29B710128001ND
2018-02-15B800629001ND
2018-05-08B802246002ND
2018-08-22B807364001ND
2018-11-26B809758001ND
2019-03-20B901462001ND
2019-05-16B902927001ND
2019-08-27B907968001ND
2019-11-20B910234001ND