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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Lawrenceville

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
2013ND80ND
2014ND50ND
2015ND60ND
2016ND10ND
2017ND10ND
2018ND20ND
2019ND10ND

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
2013-01-28201301300166AMND
2013-01-28201301300159AMND
2013-01-28201301300153AMND
2013-04-29201304300152AMND
2013-07-30201307310330AMND
2013-07-30201307310207AMND
2013-07-30201307310281AMND
2013-10-23201310240501AMND
2014-01-17AI26848ND
2014-01-17AI26847ND
2014-04-22AI38491ND
2014-07-16AI45986ND
2014-10-23AI58241ND
2015-02-06AI64378ND
2015-02-06AI64377ND
2015-04-24AI75613ND
2015-07-21AI83590ND
2015-07-21AI83589ND
2015-10-28AI99887ND
2016-03-18AJ08390ND
2017-05-26AJ56186ND
2018-03-28AJ86591ND
2018-03-28AJ86590ND
2019-05-10AK17050ND