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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Town of Princess Anne

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
2012ND80ND
2013ND20ND
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
2012-02-080190002_07_00424ND
2012-02-080190002_08_00424ND
2012-05-170190002_07_00593ND
2012-05-170190002_08_00593ND
2012-07-260190002_07_00312ND
2012-07-260190002_08_00312ND
2012-10-310190002_08_21890ND
2012-10-310190002_07_21890ND
2013-08-140190002_07_00677ND
2013-08-140190002_08_00677ND
2014-07-280190002_07_00408ND
2014-07-280190002_08_00408ND
2014-09-120190002_07_L5251ND
2014-09-120190002_08_L5251ND