Know Your Environment. Protect Your Health.

Chloromethane

Mills Road Municipal Utility 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
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
2018-09-13AE40046ND
2018-09-13AE40056ND
2019-09-12AE83276ND
2019-09-12AE83286ND
2020-04-29AF08725ND
2020-08-04AF21850ND
2021-08-11AF65871ND
2021-08-11AF65885ND
2022-02-14AF84618ND
2022-02-14AF84624ND
2023-10-05AG58615ND
2023-10-05AG58619ND