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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Garrard County Water Assoc 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND120ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
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
2015-01-22201502030048AMND
2015-01-22201502030044AMND
2015-01-22201502030046AMND
2015-04-16201504240026AMND
2015-04-16201504240024AMND
2015-04-16201504240025AMND
2015-07-24201508040061AMND
2015-07-24201508040063AMND
2015-07-24201508040059AMND
2015-10-20201510270331AMND
2015-10-20201510270329AMND
2015-10-20201510270333AMND