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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Lebanon

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND210ND
2014N/A00N/A
2015N/A00N/A
2016ND70ND
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
2013-02-19AB92893ND
2013-02-19AB92894ND
2013-02-19AB92895ND
2013-02-19AB92896ND
2013-02-19AB92898ND
2013-02-19AB92899ND
2013-02-19AB92897ND
2013-04-293591424011AMND
2013-04-293591424013AMND
2013-04-293591424001AMND
2013-04-303591424003AMND
2013-04-303591424005AMND
2013-04-303591424007AMND
2013-04-303591424009AMND
2013-10-2235113299001AMND
2013-10-2235113299013AMND
2013-10-2235113299009AMND
2013-10-2235113299007AMND
2013-10-2235113299005AMND
2013-10-2235113299003AMND
2013-12-0335118400001AMND
2016-02-29AC67122ND
2016-02-29AC67123ND
2016-02-29AC67124ND
2016-02-29AC67125ND
2016-02-29AC67127ND
2016-02-29AC67128ND
2016-02-29AC67126ND