Know Your Environment. Protect Your Health.

Chloromethane

Encinal Water Supply Corporation

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND60ND
2021ND30ND
2022ND30ND
2023ND30ND

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
2018-07-19AE33973ND
2018-07-19AE33965ND
2019-09-26AE84864ND
2019-12-11AE92154ND
2020-03-24AF04315ND
2020-03-24AF04317ND
2020-03-24AF04319ND
2020-06-08AF14872ND
2020-07-20AF19932ND
2020-12-10AF37297ND
2021-08-04AF64835ND
2021-08-04AF64837ND
2021-12-22AF79284ND
2022-09-29AG15510ND
2022-09-29AG15512ND
2022-09-29AG15514ND
2023-09-14AG56310ND
2023-09-14AG56314ND
2023-09-14AG56318ND