Know Your Environment. Protect Your Health.

Chloromethane

Leigh Wsc-rural

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021ND30ND
2022ND20ND
2023ND20ND

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
2018-04-24Q1816640005ND
2019-05-22Q1927732002ND
2020-03-23Q2012181004ND
2020-08-25Q2034096003ND
2020-08-25Q2034096009ND
2020-10-21Q2041052008ND
2021-03-05Q2105979007ND
2021-03-05Q2105979009ND
2021-05-12Q2112290005ND
2022-04-27Q2212598001ND
2022-10-31Q2232958002ND
2023-08-02Q2331452001ND
2023-08-02Q2331452003ND