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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Aqua Pa Hatboro

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND140ND
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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
2014-06-25AE38142ND
2014-06-25AE38128ND
2014-06-25AE38122ND
2014-06-25AE38134ND
2014-06-25AE38131ND
2014-06-25AE38125ND
2014-06-25AE38137ND
2014-09-25AE50180ND
2014-12-17AE60642ND
2014-12-17AE60639ND
2014-12-17AE60636ND
2014-12-17AE60351ND
2014-12-17AE60648ND
2014-12-17AE60645ND
2015-03-18AE68976ND