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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Suez Water Delaware

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane 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

 

168

Samples

0

Samples exceeding legal limit (MCL)

168

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20148.88 ppb35351.47 ppb - 19.5 ppb
201511.7 ppb32323.71 ppb - 18.1 ppb
201610.9 ppb24244.00 ppb - 20.8 ppb
201710.7 ppb28285.30 ppb - 17.5 ppb
201811.8 ppb33334.13 ppb - 20.0 ppb
201911.7 ppb16164.60 ppb - 19.8 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-03-0610749530017.10 ppb
2014-03-0610749530024.80 ppb
2014-03-0610749530035.70 ppb
2014-03-0610749530047.40 ppb
2014-03-0610749530057.20 ppb
2014-03-0610749530065.10 ppb
2014-03-0610749530073.90 ppb
2014-03-0610749530085.10 ppb
2014-06-112013111001 TTHM10.6 ppb
2014-06-112013111002 TTHM11.2 ppb
2014-06-112013111003 TTHM9.90 ppb
2014-06-112013111004 TTHM13.0 ppb
2014-06-112013111005 TTHM11.5 ppb
2014-06-112013111006 TTHM10.8 ppb
2014-06-112013111007 TTHM10.6 ppb
2014-06-112013111008 TTHM10.9 ppb
2014-09-09202898300117.4 ppb
2014-09-09202898300213.9 ppb
2014-09-09202898300311.8 ppb
2014-09-09202898300419.5 ppb
2014-09-09202898300514.8 ppb
2014-09-09202898300612.6 ppb
2014-09-09202898300714.2 ppb
2014-09-09202898300814.9 ppb
2014-12-18204252007-TTHM3.30 ppb
2014-12-1820462520018.40 ppb
2014-12-182046252002-TTHM5.60 ppb
2014-12-182046252003-TTHM6.70 ppb
2014-12-182046252004-TTHM9.20 ppb
2014-12-182046252005-TTHM6.70 ppb
2014-12-182046252006-TTHM5.40 ppb
2014-12-182046252008-TTHM6.20 ppb
2014-12-22S6039011.64 ppb
2014-12-22S6039021.47 ppb
2014-12-22S6039032.19 ppb
2015-03-112059081001 TTHM13.1 ppb
2015-03-112059081002 TTHM6.40 ppb
2015-03-112059081003 TTHM6.00 ppb
2015-03-112059081004 TTHM12.1 ppb
2015-03-112059081005 TTHM6.10 ppb
2015-03-112059081006 TTHM5.70 ppb
2015-03-112059081007 TTHM6.40 ppb
2015-03-112059081008 TTHM6.00 ppb
2015-06-082075686001 TTHM18.1 ppb
2015-06-082075686002 TTHM16.6 ppb
2015-06-082075686003 TTHM13.5 ppb
2015-06-082075686004 TTHM17.3 ppb
2015-06-082075686005 TTHM16.2 ppb
2015-06-082075686006 TTHM14.4 ppb
2015-06-082075686007 TTHM14.2 ppb
2015-06-082075686008 TTHM11.5 ppb
2015-09-032093960002 TTHM12.9 ppb
2015-09-032093960003 TTHM12.7 ppb
2015-09-032093960004 TTHM16.7 ppb
2015-09-032093960005 TTHM14.4 ppb
2015-09-032093960006 TTHM13.9 ppb
2015-09-032093960007 TTHM11.4 ppb
2015-09-032093960008 TTHM15.2 ppb
2015-12-07L5949833-1 TTHM15.3 ppb
2015-12-07L5949833-2 TTHM10.6 ppb
2015-12-07L5949833-3 TTHM7.30 ppb
2015-12-07L5949833-4 TTHM13.7 ppb
2015-12-07L5949833-6 TTHM11.5 ppb
2015-12-07L5949833-7 TTHM12.3 ppb
2015-12-07L5949833-8 TTHM7.57 ppb
2015-12-07L594983395 TTHM11.9 ppb
2015-12-30S6249693.71 ppb
2016-06-102151332001 TTHM10.8 ppb
2016-06-102151332002 TTHM10.8 ppb
2016-06-102151332003 TTHM8.30 ppb
2016-06-102151332004 TTHM14.0 ppb
2016-06-102151332005 TTHM11.4 ppb
2016-06-102151332006 TTHM12.2 ppb
2016-06-102151332007 TTHM9.90 ppb
2016-06-102151332008 TTHM11.1 ppb
2016-09-082173721001 TTHM15.2 ppb
2016-09-082173721002-TTHM14.4 ppb
2016-09-082173721003-TTHM12.0 ppb
2016-09-082173721004-TTHM20.8 ppb
2016-09-082173721005-TTHM15.9 ppb
2016-09-082173721006-TTHM14.6 ppb
2016-09-082173721007-TTHM11.8 ppb
2016-09-082173721008-TTHM14.8 ppb
2016-12-082194964001 TTHM6.70 ppb
2016-12-082194964002 TTHM5.40 ppb
2016-12-082194964003 TTHM4.00 ppb
2016-12-082194964004 TTHM10.3 ppb
2016-12-082194964005 TTHM5.80 ppb
2016-12-082194964006 TTHM8.60 ppb
2016-12-082194964007 TTHM4.70 ppb
2016-12-082194964008 TTHM7.50 ppb
2017-03-082214632001 TTHM9.50 ppb
2017-03-082214632002 TTHM6.40 ppb
2017-03-082214632003 TTHM5.30 ppb
2017-03-082214632004 TTHM12.0 ppb
2017-03-082214632005 TTHM8.00 ppb
2017-03-082214632006 TTHM10.6 ppb
2017-03-082214632007 TTHM6.80 ppb
2017-03-082214632008 TTHM6.50 ppb
2017-06-092239424001 TTHM13.0 ppb
2017-06-092239424002 TTHM9.30 ppb
2017-06-092239424003 TTHM9.70 ppb
2017-06-092239424004 TTHM16.0 ppb
2017-06-092239424005 TTHM11.6 ppb
2017-06-092239424006 TTHM15.8 ppb
2017-06-092239424007 TTHM10.00 ppb
2017-06-092239424008 TTHM11.6 ppb
2017-09-072260181001 TTHM13.9 ppb
2017-09-072260181002 TTHM13.3 ppb
2017-09-072260181003 TTHM11.6 ppb
2017-09-072260181004 TTHM14.9 ppb
2017-09-072260181005 TTHM12.8 ppb
2017-09-072260181006 TTHM17.5 ppb
2017-09-072260181007 TTHM10.5 ppb
2017-09-072260181008 TTHM12.0 ppb
2017-12-072282095001 TTHM6.30 ppb
2017-12-072282095002 TTHM8.10 ppb
2017-12-072282095003 TTHM9.10 ppb
2017-12-072282095005 TTHM7.30 ppb
2018-03-0823008790015.30 ppb
2018-03-082300879002 TTHM10.7 ppb
2018-03-082300879003 TTHM8.20 ppb
2018-03-082300879004 TTHM9.60 ppb
2018-03-082300879005 TTHM6.30 ppb
2018-03-082300879006 TTHM6.20 ppb
2018-03-082300879007 TTHM8.70 ppb
2018-03-082300879008 TTHM10.00 ppb
2018-06-072319771001 TTHM11.2 ppb
2018-06-072319771002 TTHM11.8 ppb
2018-06-072319771003 TTHM14.2 ppb
2018-06-072319771004 TTHM12.4 ppb
2018-06-072319771005 TTHM13.1 ppb
2018-06-072319771006 TTHM11.9 ppb
2018-06-072319771007 TTHM9.40 ppb
2018-06-072319771008 TTHM13.0 ppb
2018-09-078092132-01 TTHM17.6 ppb
2018-09-078092132-02 TTHM19.5 ppb
2018-09-078092132-03 THM18.5 ppb
2018-09-078092132-04 TTHM11.7 ppb
2018-09-078092132-05 TTHM20.0 ppb
2018-09-078092132-06 TTHM17.4 ppb
2018-09-078092132-07 TTHM14.7 ppb
2018-09-078092132-08 TTHM15.0 ppb
2018-12-078122168-01 TTHM10.1 ppb
2018-12-078122168-02 TTHM8.20 ppb
2018-12-078122168-03 TTHM8.00 ppb
2018-12-078122168-04 TTHM11.9 ppb
2018-12-078122168-05 TTHM14.3 ppb
2018-12-078122168-06 TTHM9.40 ppb
2018-12-078122168-07 TTHM16.8 ppb
2018-12-078122168-08 TTHM8.70 ppb
2018-12-31S8169104.13 ppb
2019-06-079062660-01 TTHM11.8 ppb
2019-06-079062660-02 TTHM13.7 ppb
2019-06-079062660-03 TTHM12.7 ppb
2019-06-079062660-04 TTHM18.5 ppb
2019-06-079062660-05 TTHM18.8 ppb
2019-06-079062660-06 TTHM14.1 ppb
2019-06-079062660-07 TTHM19.8 ppb
2019-06-079062660-08 TTHM16.5 ppb
2019-12-099122405-01 TTHM8.10 ppb
2019-12-099122405-02 TTHM7.10 ppb
2019-12-099122405-03 TTHM4.60 ppb
2019-12-099122405-04 TTHM6.20 ppb
2019-12-099122405-05 TTHM9.70 ppb
2019-12-099122405-06 TTHM5.00 ppb
2019-12-099122405-07 TTHM11.0 ppb
2019-12-099122405-08 TTHM9.40 ppb