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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Mustang SUD

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

 

118

Samples

0

Samples exceeding legal limit (MCL)

39

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.23 ppb1716ND - 13.0 ppb
20150.935 ppb208ND - 8.50 ppb
20160.282 ppb202ND - 4.49 ppb
20170.238 ppb214ND - 1.35 ppb
20180.241 ppb204ND - 1.55 ppb
20190.490 ppb205ND - 2.55 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
2014-01-16Q1401487002ND
2014-03-28Q14102460011.10 ppb
2014-03-28Q141024600213.0 ppb
2014-03-28Q14102460031.20 ppb
2014-03-28Q14102460044.60 ppb
2014-06-04Q14193740111.70 ppb
2014-06-04Q14193740122.10 ppb
2014-06-04Q14193740131.50 ppb
2014-06-04Q14193740011.30 ppb
2014-07-22Q14298790011.30 ppb
2014-07-22Q14298790021.40 ppb
2014-07-22Q14298790031.40 ppb
2014-07-22Q14298790041.10 ppb
2014-10-07Q14520610011.30 ppb
2014-10-07Q14520610021.80 ppb
2014-10-07Q14520610031.60 ppb
2014-10-07Q14520610041.50 ppb
2015-02-02Q15038300021.20 ppb
2015-02-02Q15038300031.10 ppb
2015-02-02Q15038300041.10 ppb
2015-02-02Q15038300051.20 ppb
2015-04-07Q15126080091.84 ppb
2015-04-07Q15126080128.50 ppb
2015-04-07Q15126080051.70 ppb
2015-04-07Q1512608006ND
2015-04-07Q1512608007ND
2015-04-07Q1512608008ND
2015-07-06Q1525681009ND
2015-07-06Q15256810122.05 ppb
2015-07-06Q1525681001ND
2015-07-06Q1525681002ND
2015-07-06Q1525681003ND
2015-07-06Q1525681004ND
2015-10-07Q1539455001ND
2015-10-07Q1539455002ND
2015-10-07Q1539455003ND
2015-10-07Q1539455004ND
2016-01-07Q1600448014ND
2016-01-07Q16004480101.15 ppb
2016-01-07Q1600448011ND
2016-01-07Q16004480164.49 ppb
2016-01-07Q1600448001ND
2016-01-07Q1600448002ND
2016-01-07Q1600448003ND
2016-01-07Q1600448004ND
2016-04-06Q1613608002ND
2016-04-06Q1613608003ND
2016-04-06Q1613608004ND
2016-04-06Q1613608005ND
2016-07-05Q1626800001ND
2016-07-05Q1626800002ND
2016-07-05Q1626800003ND
2016-07-05Q1626800004ND
2016-10-06Q1642414001ND
2016-10-06Q1642414002ND
2016-10-06Q1642414003ND
2016-10-06Q1642414004ND
2017-01-12Q1701667004ND
2017-01-12Q1701667001ND
2017-01-12Q1701667003ND
2017-01-12Q17016670021.10 ppb
2017-03-22Q1712369002ND
2017-03-22Q1712369004ND
2017-03-22Q1712369006ND
2017-03-22Q17123690081.35 ppb
2017-04-06Q1714362003ND
2017-04-06Q1714362001ND
2017-04-06Q1714362004ND
2017-04-06Q1714362002ND
2017-07-06Q1727638002ND
2017-07-06Q1727638001ND
2017-07-06Q1727638003ND
2017-07-06Q17276380041.26 ppb
2017-10-04Q1749048001ND
2017-10-04Q1749048008ND
2017-10-04Q1749048009ND
2017-10-04Q1749048010ND
2017-10-04Q17490480111.29 ppb
2018-01-30Q1803504001ND
2018-01-30Q1803504003ND
2018-01-30Q1803504002ND
2018-01-30Q1803504004ND
2018-04-05Q18141780011.22 ppb
2018-04-05Q18141780041.03 ppb
2018-04-05Q1814178002ND
2018-04-05Q1814178005ND
2018-07-10Q1827459002ND
2018-07-10Q1827459004ND
2018-07-10Q1827459006ND
2018-07-10Q1827459007ND
2018-07-10Q1827459022ND
2018-07-10Q1827459023ND
2018-07-10Q1827459024ND
2018-07-10Q1827459025ND
2018-10-03Q18397150021.55 ppb
2018-10-03Q18397150031.02 ppb
2018-10-03Q1839715004ND
2018-10-03Q1839715001ND
2019-01-08Q1900592007ND
2019-01-08Q1900592017ND
2019-01-08Q1900592008ND
2019-01-08Q19005920201.38 ppb
2019-01-08Q1900592004ND
2019-01-08Q1900592015ND
2019-01-08Q1900592005ND
2019-01-08Q1900592016ND
2019-04-09Q19145030022.28 ppb
2019-04-09Q19145030031.73 ppb
2019-04-09Q19145030042.55 ppb
2019-04-09Q19145030011.85 ppb
2019-08-05Q1950723004ND
2019-08-05Q1950723001ND
2019-08-05Q1950723002ND
2019-08-05Q1950723003ND
2019-10-02Q1971111002ND
2019-10-02Q1971111003ND
2019-10-02Q1971111004ND
2019-10-02Q1971111005ND