Know Your Environment. Protect Your Health.

Chloromethane

Highfield

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.

 

5

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
20196.42 ppb226.15 ppb - 6.69 ppb
20200.590 ppb110.590 ppb
20212.56 ppb112.56 ppb
2022N/A00N/A
20232.08 ppb112.08 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
2019-09-05E200009660046.15 ppb
2019-09-05E200009660066.69 ppb
2020-03-18E200031960010.590 ppb
2021-09-27E22000159012.56 ppb
2023-07-05E23003441062.08 ppb