Know Your Environment. Protect Your Health.

Chloromethane

Talley 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND40ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
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
2013-05-13101400PND
2013-05-13101401PND
2013-11-20102704PND
2013-11-20102705PND
2018-07-25Q1829519008ND
2018-07-25Q1829519011ND
2019-05-06Q1920205001ND
2019-05-06Q1920205003ND
2020-03-16Q2010542001ND
2020-03-16Q2010542003ND
2021-12-07Q2134174008ND
2021-12-07Q2134174010ND
2022-10-31Q2232959007ND
2022-10-31Q2232959009ND
2023-09-21Q2340992001ND
2023-09-21Q2340992003ND