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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Elon

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

 

86

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.775 ppb83ND - 2.60 ppb
20150.657 ppb145ND - 1.90 ppb
20160.731 ppb166ND - 2.50 ppb
20170.325 ppb164ND - 1.40 ppb
20180.563 ppb168ND - 1.30 ppb
20190.444 ppb164ND - 2.00 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
2014-02-1192189366002ND
2014-02-1192189366001ND
2014-05-2992203302001TTHND
2014-05-2992203302002TTH1.10 ppb
2014-08-1992214112009TTH2.60 ppb
2014-08-1992214112010TTH2.50 ppb
2014-11-1892226246001TTHND
2014-11-1892226246002TTHND
2015-02-25ND
2015-02-25ND
2015-05-20ND
2015-05-201.70 ppb
2015-05-20ND
2015-05-20ND
2015-08-241.90 ppb
2015-08-241.90 ppb
2015-08-241.90 ppb
2015-08-241.80 ppb
2015-11-17ND
2015-11-17ND
2015-11-17ND
2015-11-17ND
2016-02-1692286793002TTHND
2016-02-1692286793003TTHND
2016-02-1692286793004TTHND
2016-02-1692286793001TTHND
2016-05-2492298939001TTH1.10 ppb
2016-05-2492298939003TTH1.10 ppb
2016-05-2492298939004TTHND
2016-05-2492298939005TTHND
2016-08-2292309970011TTH2.30 ppb
2016-08-2292309970014TTH2.50 ppb
2016-08-2292309970013TTH2.40 ppb
2016-08-3092310689001TTH2.30 ppb
2016-11-1592319857001TTHND
2016-11-1592319857002TTHND
2016-11-1592319857003TTHND
2016-11-1592319857004TTHND
2017-02-1492329991001TTHND
2017-02-1492329991003TTHND
2017-02-1492329991004TTHND
2017-02-1492329991002TTHND
2017-05-1692340947003TTHND
2017-05-1692340947002TTHND
2017-05-1692340947001TTHND
2017-05-1692340947004TTHND
2017-08-2392352713001TTH1.30 ppb
2017-08-2392352713002TTH1.40 ppb
2017-08-2392352713003TTH1.20 ppb
2017-08-2392352713004TTH1.30 ppb
2017-11-1492363453001TTHND
2017-11-1492363453002TTHND
2017-11-1492363453003TTHND
2017-11-1492363453004TTHND
2018-02-2692374989004TTH 1.10 ppb
2018-02-2692374989003TTH 1.000 ppb
2018-02-2692374989002TTH 1.10 ppb
2018-02-2692374989001TTH 1.000 ppb
2018-05-2292385734004TTH ND
2018-05-2292385734001TTH ND
2018-05-2292385734002TTH ND
2018-05-2292385734003TTH ND
2018-08-2892397713004TTH 1.30 ppb
2018-08-2892397713003TTH 1.20 ppb
2018-08-2892397713002TTH 1.10 ppb
2018-08-2892397713001TTH 1.20 ppb
2018-11-2692408354001TTH ND
2018-11-2692408354002TTH ND
2018-11-2692408354003TTH ND
2018-11-2692408354004TTH ND
2019-02-1992418331001_3770ND
2019-02-1992418331003_3770ND
2019-02-1992418331004_3770ND
2019-02-1992418331005_3770ND
2019-05-2192430102001_3770ND
2019-05-2192430102005_3770ND
2019-05-2192430102003_3770ND
2019-05-2192430102002_3770ND
2019-08-2692443067002_37702.00 ppb
2019-08-2692443067004_37701.50 ppb
2019-08-2692443067003_37702.00 ppb
2019-08-2692443067001_37701.60 ppb
2019-11-1992454503004_3770ND
2019-11-1992454503003_3770ND
2019-11-1992454503002_3770ND
2019-11-1992454503001_3770ND