Know Your Environment. Protect Your Health.

Chloromethane

Quint-mar Water Authority

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND60ND
2020ND10ND
2021N/A00N/A
2022ND70ND
2023N/A00N/A

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
2019-02-05AB32814ND
2019-02-05AB32815ND
2019-02-05AB32816ND
2019-02-05AB32817ND
2019-02-05AB32818ND
2019-04-17AB34289ND
2020-07-20AB43480ND
2022-07-20AB60412ND
2022-07-20AB60413ND
2022-07-20AB60414ND
2022-07-20AB60415ND
2022-07-20AB60416ND
2022-07-20AB60417ND
2022-07-20AB60418ND