Know Your Environment. Protect Your Health.

Chloromethane

East Hampton WPCA - Royal Oaks System

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
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
2018-03-13116549GEND
2018-03-13116550GEND
2019-09-24127776ND
2019-09-24127777ND
2020-02-25130648ND
2020-02-25130649ND
2021-12-28144447ND
2021-12-28144448ND
2022-10-12152056ND
2022-10-12152057ND
2023-09-28163605ND
2023-12-28166829ND