Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chloromethane

Ozark Utilities Board

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.

MORE ABOUT THIS CONTAMINANT

 

63

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND170ND
2015ND90ND
2016ND140ND
2017ND40ND
2018ND20ND
20190.0168 ppb171ND - 0.286 ppb

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
2014-02-18AA88517ND
2014-02-20AA88516ND
2014-04-17AA89209ND
2014-04-17AA89210ND
2014-06-17AA90103ND
2014-06-17AA90104ND
2014-08-04AA90909ND
2014-08-06AA90910ND
2014-09-2435156683001AMND
2014-09-2435156683003AMND
2014-09-2435156683007AMND
2014-09-2435156683005AMND
2014-09-2635157135003AMND
2014-09-2635157135005AMND
2014-09-2635157135001AMND
2014-11-06AA92639ND
2014-11-06AA92638ND
2015-03-04AB02431ND
2015-03-04AB02430ND
2015-03-04AB02429ND
2015-03-3035181880003AMND
2015-03-3035181880005AMND
2015-06-02AB04709ND
2015-06-02AB04710ND
2015-08-19AB07043ND
2015-08-19AB07042ND
2016-02-18AB10062ND
2016-02-18AB10068ND
2016-02-18AB10065ND
2016-02-18AB10069ND
2016-02-18AB10066ND
2016-02-18AB10064ND
2016-02-18AB10070ND
2016-06-13AB12399ND
2016-06-13AB12400ND
2016-06-13AB12402ND
2016-06-13AB12401ND
2016-06-13AB12403ND
2016-06-13AB12398ND
2016-06-13AB12397ND
2017-05-24AB19647ND
2017-05-24AB19648ND
2017-05-24AB19646ND
2017-05-24AB19649ND
2018-06-13AB27747ND
2018-06-13AB27748ND
2019-02-07AB32891ND
2019-02-07AB32888ND
2019-02-07AB32889ND
2019-02-07AB32894ND
2019-02-07AB32893ND
2019-02-07AB32890ND
2019-02-07AB32892ND
2019-06-19AB36114ND
2019-06-19AB36116ND
2019-06-19AB36115ND
2019-06-19AB36113ND
2019-06-19AB36112ND
2019-06-19AB361170.286 ppb
2019-11-21AB40304ND
2019-11-21AB40306ND
2019-11-21AB40307ND
2019-11-21AB40305ND