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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Aberdeen

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND40ND
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
2014-02-240120001_01_12840ND
2014-05-120120001_01_13840ND
2014-08-130120001_01_16860ND
2014-11-050120001_01_18343ND
2014-11-202041365001ND
2014-11-202041366001ND
2015-02-120120001_01_19762ND
2015-05-212072806001ND
2015-05-212072807001ND
2015-08-172089872001ND