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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Calhoun

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

108

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.428 ppb186ND - 1.50 ppb
20150.0450 ppb181ND - 0.810 ppb
2016ND180ND
20170.194 ppb183ND - 1.30 ppb
20180.220 ppb184ND - 1.20 ppb
20190.283 ppb184ND - 1.50 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-04AI29110ND
2014-03-04AI29111ND
2014-03-04AI29112ND
2014-03-04AI29113ND
2014-03-18AI36161ND
2014-03-18AI361621.10 ppb
2014-06-03AI420541.50 ppb
2014-06-03AI420551.30 ppb
2014-06-03AI420561.40 ppb
2014-06-03AI420571.40 ppb
2014-09-03AI52333ND
2014-09-03AI52334ND
2014-09-03AI52335ND
2014-09-03AI523361.000 ppb
2014-12-02AI60416ND
2014-12-02AI60417ND
2014-12-02AI60418ND
2014-12-02AI60419ND
2015-03-02AI657240.810 ppb
2015-03-02AI65750ND
2015-03-02AI65751ND
2015-03-02AI65752ND
2015-03-02AI65753ND
2015-04-13AI74630ND
2015-06-01AI78391ND
2015-06-01AI78392ND
2015-06-01AI78393ND
2015-06-01AI78394ND
2015-09-01AI88420ND
2015-09-01AI88421ND
2015-09-01AI88422ND
2015-09-01AI88423ND
2015-12-01AJ01773ND
2015-12-01AJ01774ND
2015-12-01AJ01775ND
2015-12-01AJ01776ND
2016-03-01AJ07241ND
2016-03-01AJ07242ND
2016-03-01AJ07243ND
2016-03-01AJ07244ND
2016-03-07AJ07668ND
2016-03-07AJ07669ND
2016-06-01AJ13131ND
2016-06-01AJ13132ND
2016-06-01AJ13133ND
2016-06-01AJ13134ND
2016-09-06AJ25705ND
2016-09-06AJ25706ND
2016-09-06AJ25707ND
2016-09-06AJ25708ND
2016-12-05AJ35890ND
2016-12-05AJ35891ND
2016-12-05AJ35892ND
2016-12-05AJ35893ND
2017-03-01AJ47247ND
2017-03-01AJ47248ND
2017-03-01AJ47249ND
2017-03-01AJ47250ND
2017-05-15AJ55388ND
2017-06-07AJ56973ND
2017-06-08AJ571651.30 ppb
2017-06-08AJ57166ND
2017-06-08AJ57167ND
2017-06-08AJ57168ND
2017-09-06AJ67163ND
2017-09-06AJ671641.20 ppb
2017-09-06AJ67165ND
2017-09-06AJ671661.000 ppb
2017-12-04AJ74584ND
2017-12-04AJ74585ND
2017-12-04AJ74586ND
2017-12-04AJ74587ND
2018-02-26AJ84512ND
2018-02-26AJ845130.560 ppb
2018-03-05AJ84928ND
2018-03-05AJ84929ND
2018-03-05AJ84930ND
2018-03-05AJ84931ND
2018-06-04AJ90567ND
2018-06-04AJ90568ND
2018-06-04AJ90569ND
2018-06-04AJ90570ND
2018-09-04AJ99750ND
2018-09-04AJ997511.10 ppb
2018-09-04AJ997521.10 ppb
2018-09-04AJ997531.20 ppb
2018-11-26AK06639ND
2018-11-26AK06640ND
2018-11-26AK06641ND
2018-11-26AK06642ND
2019-03-04AK12400ND
2019-03-04AK12401ND
2019-03-04AK12402ND
2019-03-04AK12403ND
2019-04-29AK16001ND
2019-04-29AK16002ND
2019-05-13AK17342ND
2019-05-13AK17343ND
2019-05-13AK17344ND
2019-05-13AK17345ND
2019-09-03AK290811.10 ppb
2019-09-03AK290821.40 ppb
2019-09-03AK290831.10 ppb
2019-09-03AK290841.50 ppb
2019-12-04AK37605ND
2019-12-04AK37606ND
2019-12-04AK37607ND
2019-12-04AK37608ND