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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Suez Water Delaware

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

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND350ND
20150.108 ppb325ND - 0.780 ppb
2016ND240ND
2017ND280ND
2018ND330ND
20190.213 ppb166ND - 0.600 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2014-03-061074953001ND
2014-03-061074953002ND
2014-03-061074953003ND
2014-03-061074953004ND
2014-03-061074953005ND
2014-03-061074953006ND
2014-03-061074953007ND
2014-03-061074953008ND
2014-06-112013111001 TTHMND
2014-06-112013111002 TTHMND
2014-06-112013111003 TTHMND
2014-06-112013111004 TTHMND
2014-06-112013111005 TTHMND
2014-06-112013111006 TTHMND
2014-06-112013111007 TTHMND
2014-06-112013111008 TTHMND
2014-09-092028983001ND
2014-09-092028983002ND
2014-09-092028983003ND
2014-09-092028983004ND
2014-09-092028983005ND
2014-09-092028983006ND
2014-09-092028983007ND
2014-09-092028983008ND
2014-12-18204252007-TTHMND
2014-12-182046252001ND
2014-12-182046252002-TTHMND
2014-12-182046252003-TTHMND
2014-12-182046252004-TTHMND
2014-12-182046252005-TTHMND
2014-12-182046252006-TTHMND
2014-12-182046252008-TTHMND
2014-12-22S603901ND
2014-12-22S603902ND
2014-12-22S603903ND
2015-03-112059081001 TTHM0.720 ppb
2015-03-112059081002 TTHMND
2015-03-112059081003 TTHMND
2015-03-112059081004 TTHM0.610 ppb
2015-03-112059081005 TTHMND
2015-03-112059081006 TTHMND
2015-03-112059081007 TTHMND
2015-03-112059081008 TTHMND
2015-06-082075686001 TTHMND
2015-06-082075686002 TTHMND
2015-06-082075686003 TTHMND
2015-06-082075686004 TTHMND
2015-06-082075686005 TTHMND
2015-06-082075686006 TTHMND
2015-06-082075686007 TTHMND
2015-06-082075686008 TTHMND
2015-09-032093960002 TTHM0.680 ppb
2015-09-032093960003 TTHM0.680 ppb
2015-09-032093960004 TTHMND
2015-09-032093960005 TTHMND
2015-09-032093960006 TTHMND
2015-09-032093960007 TTHMND
2015-09-032093960008 TTHM0.780 ppb
2015-12-07L5949833-1 TTHMND
2015-12-07L5949833-2 TTHMND
2015-12-07L5949833-3 TTHMND
2015-12-07L5949833-4 TTHMND
2015-12-07L5949833-6 TTHMND
2015-12-07L5949833-7 TTHMND
2015-12-07L5949833-8 TTHMND
2015-12-07L594983395 TTHMND
2015-12-30S624969ND
2016-06-102151332001 TTHMND
2016-06-102151332002 TTHMND
2016-06-102151332003 TTHMND
2016-06-102151332004 TTHMND
2016-06-102151332005 TTHMND
2016-06-102151332006 TTHMND
2016-06-102151332007 TTHMND
2016-06-102151332008 TTHMND
2016-09-082173721001 TTHMND
2016-09-082173721002-TTHMND
2016-09-082173721003-TTHMND
2016-09-082173721004-TTHMND
2016-09-082173721005-TTHMND
2016-09-082173721006-TTHMND
2016-09-082173721007-TTHMND
2016-09-082173721008-TTHMND
2016-12-082194964001 TTHMND
2016-12-082194964002 TTHMND
2016-12-082194964003 TTHMND
2016-12-082194964004 TTHMND
2016-12-082194964005 TTHMND
2016-12-082194964006 TTHMND
2016-12-082194964007 TTHMND
2016-12-082194964008 TTHMND
2017-03-082214632001 TTHMND
2017-03-082214632002 TTHMND
2017-03-082214632003 TTHMND
2017-03-082214632004 TTHMND
2017-03-082214632005 TTHMND
2017-03-082214632006 TTHMND
2017-03-082214632007 TTHMND
2017-03-082214632008 TTHMND
2017-06-092239424001 TTHMND
2017-06-092239424002 TTHMND
2017-06-092239424003 TTHMND
2017-06-092239424004 TTHMND
2017-06-092239424005 TTHMND
2017-06-092239424006 TTHMND
2017-06-092239424007 TTHMND
2017-06-092239424008 TTHMND
2017-09-072260181001 TTHMND
2017-09-072260181002 TTHMND
2017-09-072260181003 TTHMND
2017-09-072260181004 TTHMND
2017-09-072260181005 TTHMND
2017-09-072260181006 TTHMND
2017-09-072260181007 TTHMND
2017-09-072260181008 TTHMND
2017-12-072282095001 TTHMND
2017-12-072282095002 TTHMND
2017-12-072282095003 TTHMND
2017-12-072282095005 TTHMND
2018-03-082300879001ND
2018-03-082300879002 TTHMND
2018-03-082300879003 TTHMND
2018-03-082300879004 TTHMND
2018-03-082300879005 TTHMND
2018-03-082300879006 TTHMND
2018-03-082300879007 TTHMND
2018-03-082300879008 TTHMND
2018-06-072319771001 TTHMND
2018-06-072319771002 TTHMND
2018-06-072319771003 TTHMND
2018-06-072319771004 TTHMND
2018-06-072319771005 TTHMND
2018-06-072319771006 TTHMND
2018-06-072319771007 TTHMND
2018-06-072319771008 TTHMND
2018-09-078092132-01 TTHMND
2018-09-078092132-02 TTHMND
2018-09-078092132-03 THMND
2018-09-078092132-04 TTHMND
2018-09-078092132-05 TTHMND
2018-09-078092132-06 TTHMND
2018-09-078092132-07 TTHMND
2018-09-078092132-08 TTHMND
2018-12-078122168-01 TTHMND
2018-12-078122168-02 TTHMND
2018-12-078122168-03 TTHMND
2018-12-078122168-04 TTHMND
2018-12-078122168-05 TTHMND
2018-12-078122168-06 TTHMND
2018-12-078122168-07 TTHMND
2018-12-078122168-08 TTHMND
2018-12-31S816910ND
2019-06-079062660-01 TTHMND
2019-06-079062660-02 TTHMND
2019-06-079062660-03 TTHMND
2019-06-079062660-04 TTHMND
2019-06-079062660-05 TTHMND
2019-06-079062660-06 TTHMND
2019-06-079062660-07 TTHMND
2019-06-079062660-08 TTHMND
2019-12-099122405-01 TTHMND
2019-12-099122405-02 TTHM0.600 ppb
2019-12-099122405-03 TTHM0.600 ppb
2019-12-099122405-04 TTHM0.600 ppb
2019-12-099122405-05 TTHM0.500 ppb
2019-12-099122405-06 TTHM0.600 ppb
2019-12-099122405-07 TTHM0.500 ppb
2019-12-099122405-08 TTHMND