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EWG's Tap Water Database

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Chloromethane

Bath 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.

 

12

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
2012N/A00N/A
2013N/A00N/A
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
2015-01-08201501200088AMND
2015-01-08201501200118AMND
2015-01-08201501200116AMND
2015-04-13201504170326AMND
2015-04-13201504170327AMND
2015-04-13201504170328AMND
2015-07-21201507290068AMND
2015-07-21201507290070AMND
2015-07-21201507290066AMND
2015-10-14201510210070AMND
2015-10-14201510210068AMND
2015-10-14201510210072AMND