Know Your Environment. Protect Your Health.

Chloromethane

East Lyme Water & Sewer Commission

NOTE: East Lyme Water & Sewer Commission purchases water from New London Department of Public Utilities which is required to test for chloromethane. Sample information shown below was taken by New London Department of Public Utilities.

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
2014ND20ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND100ND
2019ND100ND
2020ND40ND
2021ND30ND
2022ND60ND
2023ND70ND

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: East Lyme Water & Sewer Commission purchases water from New London Department of Public Utilities which is required to test for chloromethane. Sample information shown below was taken by New London Department of Public Utilities.

Date Lab ID Result
2013-09-17201309180529AMND
2013-12-16201312170300AMND
2014-03-17201403180211AMND
2014-06-17201406180539AMND
2018-11-2928423VOC1ND
2019-11-2030476VOC1ND
2020-12-0132749VOC1ND
2021-10-2734804VOC1ND
2022-09-1536585VOC1ND
2023-09-1438755VOC1ND