Know Your Environment. Protect Your Health.

Chloromethane

Dixie Water Association

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND10ND
2020N/A00N/A
2021N/A00N/A
20220.285 ppb21ND - 0.570 ppb
20230.785 ppb41ND - 3.14 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
2018-03-13ND
2018-07-10ND
2019-09-10ND
2022-03-244261621ND
2022-08-0843448720.570 ppb
2023-03-304437007ND
2023-06-184480379ND
2023-08-154500282ND
2023-10-0445246883.14 ppb