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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

890 Boston Turnpike

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND30ND
2016ND20ND
2017ND50ND

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
2015-06-26BJ37424VOC1ND
2015-11-10BK21302VOC1ND
2015-12-15BK39260VOC1ND
2016-01-26BK57435VOC1ND
2016-04-19BN15788VOC1ND
2017-01-11BX20168VOC1ND
2017-03-09BX83047VOC1ND
2017-04-21BY07899VOC1ND
2017-08-24BY90765VOC1ND
2017-10-06BZ17327VOC1ND