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Chloromethane

Beauregard Water Works District #3

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012ND50ND
2013ND50ND
2014N/A00N/A
2015ND120ND

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
2012-11-05AD72985ND
2012-11-05AD72984ND
2012-11-05AD72988ND
2012-11-05AD72987ND
2012-11-05AD72986ND
2012-11-05AD72985ND
2012-11-05AD72984ND
2012-11-05AD72986ND
2012-11-05AD72987ND
2012-11-05AD72988ND
2013-01-14AD74757ND
2013-01-14AD74761ND
2013-01-14AD74760ND
2013-01-14AD74759ND
2013-01-14AD74758ND
2013-01-14AD74759ND
2013-01-14AD74760ND
2013-01-14AD74761ND
2013-01-14AD74757ND
2013-01-14AD74758ND
2015-02-273197687ND
2015-02-273197592ND
2015-02-273197678ND
2015-02-273197610ND
2015-02-273197566ND
2015-03-113205160ND
2015-08-183305584ND
2015-08-183305956ND
2015-08-183305618ND
2015-08-183305542ND
2015-08-183305575ND
2015-08-183305533ND