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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Oconee County - Watkinsville

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND110ND
2016ND50ND
2017ND20ND
2018N/A00N/A
2019ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-04-29AI38857ND
2014-04-29AI38856ND
2014-05-27AI41351ND
2015-01-2135172290003AMND
2015-01-2135172290001AMND
2015-01-2135172290007AMND
2015-01-2135172290005AMND
2015-04-0735182927001AMND
2015-07-2735199612005AMND
2015-07-2735199612001AMND
2015-07-2735199612003AMND
2015-07-2735199612007AMND
2015-10-0735210941001AMND
2015-11-12AJ00940ND
2016-08-17AJ23085ND
2016-08-17AJ23088ND
2016-08-17AJ23087ND
2016-08-17AJ23086ND
2016-08-17AJ23084ND
2017-10-11AJ71271ND
2017-10-11AJ71272ND
2019-03-18AK13411ND
2019-03-18AK13410ND
2019-03-18AK13409ND
2019-03-18AK13408ND
2019-03-18AK13407ND