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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Kent 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.

MORE ABOUT THIS CONTAMINANT

 

52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015ND70ND
2016ND40ND
2017ND110ND
2018ND40ND
2019ND40ND

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
2014-03-171401808-05_TO12ND
2014-03-171401808-02_TO12ND
2014-03-171401808-03_TO12ND
2014-03-171401808-04_TO12ND
2014-04-211402378-04_TO12ND
2014-04-211402378-03_TO12ND
2014-04-211402378-02_TO12ND
2014-05-05201405060285AMND
2014-05-05201405060333AMND
2014-05-05201405060309AMND
2014-05-19201405200214AMND
2014-05-19201405200199AMND
2014-08-131404415-04_TO12ND
2014-08-18201408190490AMND
2014-08-18201408190675AMND
2014-11-19201411200430AMND
2014-11-19201411200522AMND
2014-11-19201411200426AMND
2014-11-19201411200469AMND
2014-11-19201411200467AMND
2014-11-19201411200532AMND
2014-11-19201411200528AMND
2015-02-11201502120669AMND
2015-02-11201502120427AMND
2015-03-101501510-01_TO12ND
2015-03-101501510-02_TO12ND
2015-04-291502029-03_TO12ND
2015-04-291502029-02_TO12ND
2015-09-141504119-04_TO12ND
2016-03-231601576-01_TO12ND
2016-04-191601908-03_TO12ND
2016-04-191601908-01_TO12ND
2016-07-121603230-02_TO12ND
2017-03-201701538-01_TO12ND
2017-04-251701960-01_TO12ND
2017-04-251701960-04_TO12ND
2017-08-281708-18567-003_TND
2017-08-281708-18567-001_TND
2017-08-281708-18573-001_TND
2017-08-281708-18567-002_TND
2017-08-291708-18660-002_TND
2017-08-291708-18660-003_TND
2017-08-291708-18660-001_TND
2017-09-051704240-04_TO12ND
2018-03-231801470-02_TO12ND
2018-03-231801470-01_TO12ND
2018-04-191801795-01_TO12ND
2018-08-301803927-02_TO12ND
2019-03-281901506-02_TO12ND
2019-03-281901506-01_TO12ND
2019-04-241901794-03_TO12ND
2019-09-101904181-01_TO12ND