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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Hot Springs 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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND40ND
2014ND60ND
2015ND20ND
2016ND20ND
2017ND20ND
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
2013-08-12O132270015ND
2013-08-12O132270014ND
2013-11-13O133180025ND
2013-11-13O133180024ND
2014-02-10O140440097ND
2014-02-10O140440098ND
2014-04-0214094002901ND
2014-05-12O141350013ND
2014-05-12O141350014ND
2014-11-1714324002701ND
2015-04-0115092001409ND
2015-10-0615282001801ND
2016-04-0616098015501ND
2016-10-0316280005601ND
2017-04-0417096007801ND
2017-10-0317278009601ND
2018-04-0218095005109ND
2018-10-0118277018209ND
2019-04-1719108004401ND
2019-10-0119277003301ND