Know Your Environment. Protect Your Health.

Chloromethane

Fort Detrick

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.

 

4

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20190.690 ppb110.690 ppb
20203.94 ppb113.94 ppb
20214.86 ppb114.86 ppb
20224.00 ppb114.00 ppb
2023N/A00N/A

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
2019-04-16E190034780040.690 ppb
2020-06-15E200038530013.94 ppb
2021-07-13E220001370014.86 ppb
2022-06-30E23000009064.00 ppb