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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of South Houston

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.

 

108

Samples

0

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20129.06 ppb1310ND - 25.3 ppb
20130.469 ppb163ND - 3.20 ppb
20146.01 ppb168ND - 25.5 ppb
2015ND210ND
2016ND210ND
2017ND210ND

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
2012-02-06AB80237ND
2012-05-18AB902516.30 ppb
2012-05-18AB90264ND
2012-05-18AB9025419.4 ppb
2012-05-18AB902508.40 ppb
2012-07-06AB946809.50 ppb
2012-07-06AB9466225.3 ppb
2012-07-06AB9466312.5 ppb
2012-07-06AB946798.90 ppb
2012-10-12AC03206ND
2012-10-12AC032184.50 ppb
2012-10-12AC032071.90 ppb
2012-10-12AC0321921.1 ppb
2013-01-14AC07573ND
2013-01-14AC07567ND
2013-01-14AC07574ND
2013-01-14AC07568ND
2013-04-02AC15467ND
2013-04-02AC15457ND
2013-04-02AC15460ND
2013-04-02AC15463ND
2013-07-19AC25316ND
2013-07-19AC253213.20 ppb
2013-07-19AC252851.40 ppb
2013-07-19AC253222.90 ppb
2013-10-24AC33228ND
2013-10-24AC33221ND
2013-10-24AC33203ND
2013-10-24AC33202ND
2014-02-14AC43091ND
2014-02-14AC43068ND
2014-02-14AC43070ND
2014-02-14AC43023ND
2014-04-07AC49612ND
2014-04-07AC49615ND
2014-04-07AC49582ND
2014-06-06AC5629825.5 ppb
2014-08-11AC629019.20 ppb
2014-08-11AC62929ND
2014-08-11AC6290011.2 ppb
2014-08-11AC6290211.5 ppb
2014-11-24AC727867.80 ppb
2014-11-24AC727206.60 ppb
2014-11-24AC727827.80 ppb
2014-11-24AC7278716.5 ppb
2015-01-21AC77101ND
2015-01-21AC77095ND
2015-01-21AC77093ND
2015-01-21AC77099ND
2015-01-21AC77109ND
2015-01-21AC77202ND
2015-01-21AC77204ND
2015-01-21AC77209ND
2015-01-21AC77203ND
2015-06-12AC95899ND
2015-06-12AC95900ND
2015-06-12AC95927ND
2015-06-12AC95907ND
2015-07-20AD00121ND
2015-07-20AD00077ND
2015-07-20AD00105ND
2015-07-20AD00100ND
2015-10-06AD09590ND
2015-10-06AD09585ND
2015-10-06AD09592ND
2015-10-06AD09581ND
2016-01-14AD18207ND
2016-01-14AD18205ND
2016-01-14AD18221ND
2016-01-14AD18219ND
2016-01-14AD18215ND
2016-01-14AD18165ND
2016-01-14AD18163ND
2016-01-14AD18164ND
2016-01-14AD18162ND
2016-04-08AD32541ND
2016-04-08AD32546ND
2016-04-08AD32528ND
2016-04-08AD32535ND
2016-07-11AD43515ND
2016-07-11AD43522ND
2016-07-11AD43516ND
2016-07-11AD43555ND
2016-10-07AD52794ND
2016-10-07AD52798ND
2016-10-07AD52796ND
2016-10-07AD52795ND
2017-01-06AD63617ND
2017-01-06AD63561ND
2017-01-06AD63560ND
2017-01-06AD63563ND
2017-01-06AD63562ND
2017-03-01AD72785ND
2017-03-01AD72763ND
2017-03-01AD72765ND
2017-03-01AD72753ND
2017-04-07AD78912ND
2017-04-07AD78911ND
2017-04-07AD78910ND
2017-04-07AD78913ND
2017-07-14AD89414ND
2017-07-14AD89417ND
2017-07-14AD89419ND
2017-07-14AD89415ND
2017-10-17AE01059ND
2017-10-17AE01056ND
2017-10-17AE01060ND
2017-10-17AE01071ND