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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

New Orleans Algiers Water Works

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND50ND
2015ND30ND
2016N/A00N/A
2017N/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
2012-03-05AD64088ND
2012-03-05AD64088ND
2013-01-22AD74828ND
2013-01-22AD74828ND
2014-02-04AD88744ND
2014-02-04AD88744ND
2014-03-13AD89681ND
2014-03-13AD89681ND
2014-10-08201410090323AMND
2015-01-14201501150656AMND
2015-04-09201504100285AMND
2015-07-14201507150600AMND