Know Your Environment. Protect Your Health.

Chloromethane

Manchester Water District

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
20150.0360 ppb101ND - 0.360 ppb
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019N/A00N/A
2020N/A00N/A
2021ND20ND
2022N/A00N/A
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
2015-03-18201503090113AMND
2015-03-18201503090110AM0.360 ppb
2015-03-18201503090112AMND
2015-03-18201503090111AMND
2015-05-12201503220006AMND
2015-08-18201507160215AMND
2015-09-24201508180008AMND
2015-09-24201510020573AMND
2015-09-24201510020606AMND
2015-09-24201510020474AMND
2018-10-02ND
2021-04-054107001ND
2021-04-054107002ND