Know Your Environment. Protect Your Health.

Chloromethane

Ridge Spring, Town of

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND60ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND40ND
2019ND40ND
2020ND30ND
2021ND40ND
2022ND30ND
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
2013-03-06100637PND
2013-03-06100636PND
2013-06-05101547PND
2013-09-10102160QND
2013-09-10102159PND
2013-12-04102868PND
2018-01-17AE06217ND
2018-05-02AE11636ND
2018-07-18AE15231ND
2018-10-17AE19864ND
2019-02-27AE26426ND
2019-04-02AE28055ND
2019-07-16AE33704ND
2019-11-25AE40764ND
2020-02-11AE44279ND
2020-04-22AE47574ND
2020-12-09AE58678ND
2021-02-24AE61854ND
2021-06-24AE67917ND
2021-07-21AE69291ND
2021-11-17AE75295ND
2022-01-12AE77416ND
2022-04-20AE82499ND
2022-11-16AE93064ND
2023-10-18AF10384ND