Know Your Environment. Protect Your Health.

Chloromethane

Susan Circle Community Ws

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201811.0 ppb1111.0 ppb
201911.0 ppb1111.0 ppb
20206.20 ppb116.20 ppb
2021ND10ND
20223.70 ppb113.70 ppb
20238.20 ppb118.20 ppb

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
2018-11-28AE4719711.0 ppb
2019-12-05AE9144111.0 ppb
2020-12-15AF376896.20 ppb
2021-12-14AF78712ND
2022-12-13AG216733.70 ppb
2023-12-19AG669988.20 ppb