Know Your Environment. Protect Your Health.

Chloromethane

Settlers Crossing Water System 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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
2023ND30ND

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
2018-06-05AE28695ND
2018-08-21AE37879ND
2018-11-06AE45427ND
2019-02-28AE56604ND
2020-06-19AF16354ND
2021-06-22AF59079ND
2022-08-17AG09698ND
2023-02-21AG29721ND
2023-06-13AG44264ND
2023-08-02AG51100ND