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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Firgrove Mutual Inc

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND210ND
2016ND20ND
2017N/A00N/A
2018ND10ND
2019N/A00N/A

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
2014-11-17201411190378AMND
2014-11-17201411190437AMND
2014-11-17201411190454AMND
2014-11-17201411190490AMND
2014-11-17201411190528AMND
2014-11-17201411190452AMND
2014-11-17201411190526AMND
2014-12-12201412160672AMND
2015-02-13201502160119AMND
2015-02-13201502160121AMND
2015-05-18201505210078AMND
2015-05-18201505200365AMND
2015-05-18201505200655AMND
2015-05-18201505200651AMND
2015-05-18201505200274AMND
2015-05-18201505200251AMND
2015-05-18201505200262AMND
2015-05-18201505210076AMND
2015-05-18201505200243AMND
2015-07-1675185ND
2015-07-1675184ND
2015-07-1675183ND
2015-07-1675182ND
2015-07-1675181ND
2015-07-1675180ND
2015-07-1675179ND
2015-07-1675178ND
2015-08-21201508250571AMND
2015-10-0675539ND
2016-08-04ND
2016-08-04ND
2018-05-08ND