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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Arizona Water Company - Sedona

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
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
2014-07-283072105ND
2014-07-283072114ND
2014-07-283072096ND
2014-07-283072144ND
2014-07-283072123ND
2014-07-283072135ND
2014-08-113080265ND
2014-08-113080187ND
2015-01-143171185ND
2015-01-143171228ND
2015-01-143171254ND
2015-01-143171294ND
2015-01-203173576ND
2015-01-203173496ND
2015-02-173191727ND
2015-02-173191738ND