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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Appalachian State Univ WTP

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

 

103

Samples

0

Samples exceeding legal limit (MCL)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.589 ppb165ND - 3.00 ppb
20150.359 ppb165ND - 1.56 ppb
20160.980 ppb1610ND - 2.14 ppb
20170.905 ppb168ND - 2.07 ppb
20180.0435 ppb231ND - 1.000 ppb
2019ND160ND

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
2014-01-3137729_14-03136ND
2014-01-3137729_14-03137ND
2014-01-3137729_14-03138ND
2014-01-3137729_14-03139ND
2014-05-0537729_14-12419ND
2014-05-0537729_14-124203.00 ppb
2014-05-0537729_14-12421ND
2014-05-0537729_14-124222.00 ppb
2014-07-2837729_14-223421.32 ppb
2014-07-2837729_14-223431.29 ppb
2014-07-2837729_14-223441.83 ppb
2014-07-2837729_14-22345ND
2014-10-2137729_14-32042ND
2014-10-2137729_14-32043ND
2014-10-2137729_14-32044ND
2014-10-2137729_14-32045ND
2015-01-21ND
2015-01-21ND
2015-01-21ND
2015-01-21ND
2015-04-231.56 ppb
2015-04-23ND
2015-04-23ND
2015-04-231.18 ppb
2015-07-08ND
2015-07-081.000 ppb
2015-07-081.000 ppb
2015-07-081.000 ppb
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2016-01-2837729_16-028411.000 ppb
2016-01-2837729_16-028421.000 ppb
2016-01-2837729_16-028431.000 ppb
2016-01-2837729_16-028441.000 ppb
2016-04-2737729_16-131632.08 ppb
2016-04-2737729_16-131642.14 ppb
2016-04-2737729_16-131652.10 ppb
2016-04-2737729_16-131662.01 ppb
2016-07-2637729_16-24808ND
2016-07-2637729_16-24809ND
2016-07-2637729_16-248101.40 ppb
2016-07-2637729_16-248111.96 ppb
2016-10-2637729_16-37449ND
2016-10-2637729_16-37450ND
2016-10-2637729_16-37451ND
2016-10-2637729_16-37452ND
2017-01-3037729_17-03333ND
2017-01-3137729_17-03334ND
2017-01-3137729_17-03335ND
2017-01-3137729_17-03336ND
2017-04-2637729_17-13855ND
2017-04-2637729_17-13856ND
2017-04-2637729_17-13857ND
2017-04-2637729_17-13858ND
2017-07-1837729_17-247812.07 ppb
2017-07-1837729_17-247822.04 ppb
2017-07-1837729_17-247831.78 ppb
2017-07-1837729_17-247841.78 ppb
2017-10-2537729_17-401701.75 ppb
2017-10-2537729_17-401711.77 ppb
2017-10-2537729_17-401721.59 ppb
2017-10-2537729_17-401731.72 ppb
2018-01-2537729_18-03304 ND
2018-01-2537729_18-03305 ND
2018-01-2537729_18-03306 ND
2018-01-2537729_18-03307 ND
2018-04-1037729_18-13909 ND
2018-04-1037729_18-13910 ND
2018-04-1037729_18-13911 ND
2018-04-1037729_18-13912 ND
2018-06-2737729_18-26233 1.000 ppb
2018-06-2737729_18-26234 ND
2018-06-2737729_18-26235 ND
2018-07-1937729_18-29589 ND
2018-07-1937729_18-29590 ND
2018-07-1937729_18-29591 ND
2018-07-1937729_18-29592 ND
2018-10-2337729_18-44087 ND
2018-10-2337729_18-44088 ND
2018-10-2337729_18-44089 ND
2018-10-2337729_18-44090 ND
2018-12-0537729_18-50959 ND
2018-12-0537729_18-50960 ND
2018-12-0537729_18-50961 ND
2018-12-0537729_18-50962 ND
2019-01-3037729_19-04371A ND
2019-01-3037729_19-04374A ND
2019-01-3037729_19-04375A ND
2019-01-3037729_19-04376A ND
2019-04-1037729_19-14814 ND
2019-04-1037729_19-14815 ND
2019-04-1037729_19-14816 ND
2019-04-1037729_19-14817 ND
2019-07-2337729_19-30874 ND
2019-07-2337729_19-30875 ND
2019-07-2337729_19-30876 ND
2019-07-2337729_19-30877 ND
2019-10-2237729_19-45545 ND
2019-10-2237729_19-45546 ND
2019-10-2237729_19-45547 ND
2019-10-2237729_19-45548 ND