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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Ozark Mtn Regional PWA

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

 

60

Samples

0

Samples exceeding legal limit (MCL)

35

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.87 ppb13131.30 ppb - 2.50 ppb
20150.651 ppb137ND - 1.50 ppb
20160.496 ppb73ND - 1.30 ppb
20170.0589 ppb91ND - 0.530 ppb
20180.693 ppb96ND - 1.41 ppb
20190.546 ppb95ND - 1.10 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
2014-01-21140230046021.60 ppb
2014-01-21140230047021.30 ppb
2014-01-21140230048021.40 ppb
2014-04-30141210060022.50 ppb
2014-04-30141210059021.90 ppb
2014-04-30141210058021.60 ppb
2014-07-28142120018021.90 ppb
2014-07-28142120019022.10 ppb
2014-07-28142120017022.00 ppb
2014-10-27143030090022.00 ppb
2014-10-27143030067012.07 ppb
2014-10-27143030088022.00 ppb
2014-10-27143030089021.90 ppb
2015-01-27150290084021.10 ppb
2015-01-27150290085021.40 ppb
2015-01-27150290083021.50 ppb
2015-04-2715120004802ND
2015-04-2715120005002ND
2015-04-27151200049021.20 ppb
2015-04-27151200054031.47 ppb
2015-07-2715210001702ND
2015-07-2715210001602ND
2015-07-27152100014030.808 ppb
2015-10-2815302003802ND
2015-10-2815302003902ND
2015-10-28153020035010.980 ppb
2016-05-1616140010002ND
2016-05-1616140010102ND
2016-08-22162370001021.20 ppb
2016-08-22162370002021.30 ppb
2016-11-14163210092010.970 ppb
2016-11-1416321009002ND
2016-11-1416321009102ND
2017-02-0617040000302ND
2017-02-0617040000402ND
2017-04-2417117002402ND
2017-04-2417117002502ND
2017-07-2417207001002ND
2017-07-2417207000902ND
2017-10-2317299003702ND
2017-10-2317299003802ND
2017-10-23172990039010.530 ppb
2018-05-07181290006030.484 ppb
2018-05-0718129000402ND
2018-05-0718129000302ND
2018-07-30182130059031.41 ppb
2018-07-30182130058021.40 ppb
2018-07-30182130057021.30 ppb
2018-10-23182980087010.540 ppb
2018-10-2918304000202ND
2018-10-29183040001021.10 ppb
2019-01-2819031006402ND
2019-01-2819031006502ND
2019-04-29191220047021.10 ppb
2019-04-29191220048021.000 ppb
2019-07-31192120079021.10 ppb
2019-07-31192120078021.000 ppb
2019-10-2919305002402ND
2019-10-29193050022010.710 ppb
2019-10-2919305002502ND