Know Your Environment. Protect Your Health.

Chloromethane

Town of Friendsville

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.

 

3

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20194.78 ppb114.78 ppb
2020N/A00N/A
20219.46 ppb119.46 ppb
2022N/A00N/A
20231.02 ppb111.02 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
2019-08-14E200006260014.78 ppb
2021-06-22E210038200019.46 ppb
2023-04-27E23002643031.02 ppb