Know Your Environment. Protect Your Health.

Chloromethane

Minatare, City of

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201817.7 ppb2216.5 ppb - 18.8 ppb
201947.3 ppb2243.6 ppb - 50.9 ppb
202013.4 ppb2212.5 ppb - 14.3 ppb
202115.2 ppb2213.9 ppb - 16.5 ppb
202224.9 ppb2224.0 ppb - 25.7 ppb
202319.9 ppb1119.9 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
2018-08-2056852616.5 ppb
2018-08-2056852518.8 ppb
2019-08-1262843443.6 ppb
2019-08-1262843550.9 ppb
2020-08-1768990114.3 ppb
2020-08-1768990012.5 ppb
2021-08-1675379013.9 ppb
2021-08-1675379116.5 ppb
2022-08-0881616824.0 ppb
2022-08-0881616725.7 ppb
2023-08-1488025119.9 ppb