Know Your Environment. Protect Your Health.

Chloromethane

Wattsville Water Authority

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.

 

15

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
2020ND30ND
2021ND20ND
2022ND30ND
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
2018-01-081801-00078-3ND
2018-01-081801-00078-5ND
2019-01-141901-00204-003ND
2019-01-141901-00204-004ND
2020-03-092003-00158-003ND
2020-03-092003-00158-004ND
2020-03-092003-00158-007ND
2021-01-062101-00069-003ND
2021-01-062101-00069-005ND
2022-03-152203-00287-002ND
2022-03-152203-00287-003ND
2022-03-152203-00287-004ND
2023-02-152302-00340-004ND
2023-02-152302-00340-005ND
2023-02-152302-00340-006ND