Know Your Environment. Protect Your Health.

Chloromethane

Mallory Valley Utility Distric

NOTE: Mallory Valley Utility Distric purchases water from Harpeth Valley Utility District which is required to test for chloromethane. Sample information shown below was taken by Harpeth Valley 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
2013ND40ND
2014ND30ND
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018ND40ND
2019ND10ND
2020N/A00N/A
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: Mallory Valley Utility Distric purchases water from Harpeth Valley Utility District which is required to test for chloromethane. Sample information shown below was taken by Harpeth Valley Utility District.

Date Result
2014-05-15ND
2014-08-14ND
2014-11-17ND
2015-02-11ND
2018-02-14ND
2018-05-15ND
2018-08-17ND
2018-11-09ND
2019-11-12ND
2021-11-08ND
2022-11-07ND
2023-11-16ND