Know Your Environment. Protect Your Health.

Chloromethane

Westchester County WD #2

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-05-117051465001 POCSND
2019-05-317091709001 POCSND
2020-05-0870130562 POCSND
2020-11-12AW21843-POCSND
2021-06-0470175718002-POCND
2021-07-27AX14931-POCSND
2022-05-1370214739003-POCSND
2022-05-13702147390002-POCSND
2022-05-1370214743004-POCSND
2022-09-21AY17010-POCSND
2023-07-27AZ13680-POCSND