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Chloromethane

Clayton 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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND20ND
2011ND20ND
2012ND40ND
2013ND20ND
2014ND100ND
2015ND20ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 2.69 ppb

The 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
2010-03-02AG83537ND
2010-03-02AG83536ND
2011-07-05AH33248ND
2011-07-05AH33247ND
2012-03-05AH54187ND
2012-03-05AH54186ND
2012-07-25AH71225ND
2012-10-22AH82285ND
2013-04-16AH99124ND
2013-04-16AH99123ND
2014-02-10AI27791ND
2014-02-10AI27790ND
2014-03-18775644-10968ND
2014-03-18775646-10968ND
2014-06-11796433-11567ND
2014-06-11796427-11567ND
2014-09-09816837-12294ND
2014-09-09816839-12294ND
2014-12-08834802-12981ND
2014-12-08834800-12981ND
2015-02-17AI64998ND
2015-02-17AI64997ND