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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Hahira

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND30ND
20160.0883 ppb61ND - 0.530 ppb
2017ND30ND
2018ND20ND
2019ND20ND

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
2014-10-21AI58086ND
2015-01-29AI63739ND
2015-04-20AI75249ND
2015-07-28AI84453ND
2016-03-31AJ09268ND
2016-03-31AJ09267ND
2016-03-31AJ092660.530 ppb
2016-06-09AJ14138ND
2016-08-05AJ21489ND
2016-11-01AJ32924ND
2017-02-06AJ46094ND
2017-02-06AJ46093ND
2017-04-19AJ53780ND
2018-05-11AJ89443ND
2018-05-11AJ89442ND
2019-05-16AK17840ND
2019-05-16AK17841ND