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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Anderson County Water Authority

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND100ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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 Result
2014-02-26ND
2014-03-05ND
2015-01-20ND
2015-01-20ND
2015-02-25ND
2015-03-11ND
2015-04-27ND
2015-04-27ND
2015-07-22ND
2015-07-22ND
2015-10-13ND
2015-10-13ND
2016-02-18ND
2016-02-19ND
2017-02-16ND
2017-03-13ND
2018-03-07ND
2018-03-08ND
2019-01-10ND
2019-02-27ND