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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Waterproof Water System

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

 

98

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
2016ND160ND
2017ND180ND
20180.0325 ppb162ND - 0.260 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
2014-03-06L0040519-02ND
2014-03-06L0040519-01ND
2014-03-06L0040519-02ND
2014-03-06L0040519-01ND
2014-06-1635142317001ND
2014-06-1635142317002ND
2014-06-1635142317002ND
2014-06-1635142317001ND
2014-09-04L0047727-01ND
2014-09-04L0047727-02ND
2014-09-04L0047727-02ND
2014-09-04L0047727-01ND
2014-12-11L0051811-01ND
2014-12-11L0051811-02ND
2014-12-11L0051811-02ND
2014-12-11L0051811-01ND
2015-03-03LA4217-1ND
2015-03-03LA4217-2ND
2015-03-03LA4217-2ND
2015-03-03LA4217-1ND
2015-06-0435191799001ND
2015-06-0435191799002ND
2015-06-0435191799002ND
2015-06-0435191799001ND
2015-09-0335206365001ND
2015-09-0335206365002ND
2015-09-0335206365001ND
2015-09-0335206365002ND
2015-12-01LA14582-2ND
2015-12-01LA14582-1ND
2015-12-01LA14582-2ND
2015-12-01LA14582-1ND
2016-03-03LA17947-1ND
2016-03-03LA17947-2ND
2016-03-03LA17947-2ND
2016-03-03LA17947-1ND
2016-06-09LA21714-1ND
2016-06-09LA21714-1ND
2016-06-09LA21714-2ND
2016-06-09LA21714-2ND
2016-09-22LA25837-1ND
2016-09-22LA25837-1ND
2016-09-22LA25837-2ND
2016-09-22LA25837-2ND
2016-12-06LA28342-1ND
2016-12-06LA28342-2ND
2016-12-06LA28342-1ND
2016-12-06LA28342-2ND
2017-03-0935300113003ND
2017-03-0935300113004ND
2017-03-0935300113004ND
2017-03-0935300113003ND
2017-06-1935319531002ND
2017-06-1935319531001ND
2017-06-1935319531001ND
2017-06-1935319531002ND
2017-09-1835336925002ND
2017-09-1835336925001ND
2017-09-1835336925002ND
2017-09-1835336925003ND
2017-09-1835336925003ND
2017-09-1835336925001ND
2017-12-1835364713002ND
2017-12-1835364713001ND
2017-12-1835364713001ND
2017-12-1835364713002ND
2018-03-0135377859001ND
2018-03-0135377859002ND
2018-03-0135377859001ND
2018-03-0135377859002ND
2018-06-19353998650020.260 ppb
2018-06-1935399865001ND
2018-06-1935399865001ND
2018-06-19353998650020.260 ppb
2018-09-1035417621002ND
2018-09-1035417621001ND
2018-09-1035417621001ND
2018-09-1035417621002ND
2018-12-1035437322001ND
2018-12-1035437322002ND
2018-12-1035437322001ND
2018-12-1035437322002ND
2019-03-1135454262002ND
2019-03-1135454262001ND
2019-03-1135454262001ND
2019-03-1135454262002ND
2019-06-1235475539002ND
2019-06-1235475539002ND
2019-06-1235475539001ND
2019-06-1235475539001ND
2019-09-1735499533002ND
2019-09-1735499533001ND
2019-09-1735499533001ND
2019-09-1735499533002ND
2019-12-1335518934001ND
2019-12-1335518934002ND
2019-12-1335518934001ND
2019-12-1335518934002ND