Know Your Environment. Protect Your Health.

Chloromethane

Greenville Water District

NOTE: Greenville Water District purchases water from City of Providence which is required to test for chloromethane. Sample information shown below was taken by City of Providence.

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
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
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

NOTE: Greenville Water District purchases water from City of Providence which is required to test for chloromethane. Sample information shown below was taken by City of Providence.

Date Lab ID Result
2013-09-18746539-9807ND
2013-12-09762084-10411ND
2014-03-11774304-10910ND
2014-06-03794256-11546ND
2018-02-061801079-01_TO12ND
2019-02-051901020-01_TO12ND
2020-01-272001034-01_TO12ND
2021-01-112100877-01_TO12ND
2022-03-162201352-01_TO12ND
2023-03-062301296-01_TO12ND