Know Your Environment. Protect Your Health.

Chloromethane

Tennessee Water Supply Corporation

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20191.58 ppb111.58 ppb
2020ND10ND
2021ND10ND
2022ND10ND
20231.33 ppb111.33 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-11-14Q1846426003ND
2019-12-05Q19791540011.58 ppb
2020-03-24Q2012417001ND
2021-01-26Q2101843004ND
2022-02-01Q2203642003ND
2023-03-01Q23082580021.33 ppb