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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Lehigh County Authority Allentown Division

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND70ND
2014ND40ND
2015N/A00N/A
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
2012-04-12L4002369-2ND
2012-04-12L4002369-3ND
2012-04-12L4002369-1ND
2013-02-07L4430705-3ND
2013-02-07L4430705-2ND
2013-02-07L4430705-1ND
2013-07-22732602-9350ND
2013-07-22732604-9350ND
2013-10-09751813-10032ND
2013-10-09751815-10032ND
2014-01-15766744-10584ND
2014-01-15766746-10584ND
2014-04-2214040706-02ND
2014-04-2214040706-01ND