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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Deming Municipal Water System

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND120ND
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
2014-11-184K24092-19AND
2014-11-184K24092-05AND
2014-11-184K24092-03AND
2014-11-184K24092-17AND
2014-11-184K24092-15AND
2014-11-184K24092-21AND
2014-11-184K24092-01AND
2014-11-184K24092-11AND
2014-11-184K24092-07AND
2014-11-184K24092-13AND
2014-11-184K24092-09AND
2014-11-244L02069-01AND
2015-05-125E14028-01AND
2015-05-125E14028-13AND
2015-05-125E14028-07AND
2015-05-125E14028-05AND
2015-05-125E14028-03AND
2015-05-125E14028-11AND
2015-05-125E14028-09AND
2015-05-135E14045-03AND
2015-05-135E14045-05AND
2015-05-135E14045-01AND
2015-05-185E19030-01AND
2015-05-185E19030-03AND