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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

East Casey County Water District

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
2014ND200ND
2015N/A00N/A
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
2014-02-20201402250286AMND
2014-02-20201402250297AMND
2014-02-20201402250292AMND
2014-02-20201402250302AMND
2014-02-21201402250306AMND
2014-05-19201405280333AMND
2014-05-19201405280329AMND
2014-05-19201405280337AMND
2014-05-19201405280310AMND
2014-05-20201405280316AMND
2014-08-19201408270620AMND
2014-08-19201408270637AMND
2014-08-19201408270628AMND
2014-08-19201408270632AMND
2014-08-20201408270624AMND
2014-11-12201411180199AMND
2014-11-12201411180207AMND
2014-11-12201411180203AMND
2014-11-12201411180216AMND
2014-11-13201411180212AMND