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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Midlothian

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

 

113

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20149.65 ppb2321ND - 15.1 ppb
20153.23 ppb1812ND - 13.0 ppb
20160.649 ppb189ND - 1.92 ppb
20171.68 ppb1814ND - 4.01 ppb
20181.66 ppb1813ND - 3.21 ppb
20190.930 ppb1811ND - 2.46 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
2014-03-11Q1407651002ND
2014-03-11Q140765101113.1 ppb
2014-03-11Q14076510086.20 ppb
2014-03-11Q140765100912.0 ppb
2014-03-11Q140765101014.0 ppb
2014-03-31Q141008200511.5 ppb
2014-03-31Q141008200614.8 ppb
2014-03-31Q141008200712.1 ppb
2014-03-31Q141008200812.4 ppb
2014-06-04Q1419409005ND
2014-06-04Q141940900113.7 ppb
2014-06-04Q14194090026.80 ppb
2014-06-04Q14194090039.60 ppb
2014-06-04Q14194090048.70 ppb
2014-07-30Q14324680074.85 ppb
2014-07-30Q143246800115.1 ppb
2014-07-30Q143246800211.7 ppb
2014-07-30Q143246800313.8 ppb
2014-07-30Q143246800412.9 ppb
2014-11-05Q145483400113.6 ppb
2014-11-05Q14548340022.90 ppb
2014-11-05Q14548340033.70 ppb
2014-11-05Q14548340048.50 ppb
2015-03-19Q1510436010ND
2015-03-19Q151043600512.7 ppb
2015-03-19Q151043600610.1 ppb
2015-03-19Q151043600713.0 ppb
2015-03-19Q151043600810.2 ppb
2015-06-01Q15197790081.56 ppb
2015-06-01Q15197790051.42 ppb
2015-06-01Q15197790061.51 ppb
2015-06-01Q15197790071.37 ppb
2015-07-22Q15284290021.95 ppb
2015-07-22Q15284290031.40 ppb
2015-07-22Q1528429004ND
2015-07-22Q1528429005ND
2015-07-22Q15284290061.63 ppb
2015-11-19Q15460660011.22 ppb
2015-11-19Q1546066002ND
2015-11-19Q1546066003ND
2015-11-19Q1546066004ND
2016-03-23Q1611951008ND
2016-03-23Q1611951009ND
2016-03-23Q1611951010ND
2016-03-23Q1611951011ND
2016-05-18Q1619797001ND
2016-05-18Q1619797007ND
2016-05-18Q1619797008ND
2016-05-18Q1619797009ND
2016-05-18Q16197970101.02 ppb
2016-09-02Q16355310021.48 ppb
2016-09-02Q16355310031.15 ppb
2016-09-02Q16355310041.23 ppb
2016-09-02Q16355310051.15 ppb
2016-09-02Q16355310061.30 ppb
2016-10-27Q16459530011.92 ppb
2016-10-27Q16459530021.04 ppb
2016-10-27Q16459530031.39 ppb
2016-10-27Q1645953004ND
2017-02-21Q17073430011.86 ppb
2017-02-21Q17073430021.68 ppb
2017-02-21Q17073430031.52 ppb
2017-02-21Q1707343004ND
2017-05-11Q17194630011.67 ppb
2017-05-11Q1719463003ND
2017-05-11Q1719463002ND
2017-05-11Q17194630041.34 ppb
2017-07-11Q17281560061.77 ppb
2017-07-11Q17281560091.99 ppb
2017-07-11Q17281560031.30 ppb
2017-07-11Q17281560101.59 ppb
2017-07-11Q17281560041.61 ppb
2017-09-28Q1747556002ND
2017-11-27Q17600510014.01 ppb
2017-11-27Q17600510023.15 ppb
2017-11-27Q17600510033.52 ppb
2017-11-27Q17600510043.28 ppb
2018-01-25Q1802981014ND
2018-01-25Q18029810013.21 ppb
2018-01-25Q18029810111.52 ppb
2018-01-25Q18029810022.82 ppb
2018-01-25Q18029810121.47 ppb
2018-05-25Q18211640012.23 ppb
2018-05-25Q18211640022.16 ppb
2018-05-25Q18211640032.20 ppb
2018-05-25Q18211640041.59 ppb
2018-08-31Q18351600012.04 ppb
2018-08-31Q18351600032.56 ppb
2018-08-31Q18351600052.45 ppb
2018-08-31Q18351600042.43 ppb
2018-08-31Q18351600063.14 ppb
2018-11-07Q1844594002ND
2018-11-07Q1844594001ND
2018-11-07Q1844594003ND
2018-11-07Q1844594004ND
2019-02-12Q1906277003ND
2019-02-12Q1906277015ND
2019-02-12Q1906277016ND
2019-02-12Q1906277017ND
2019-02-12Q1906277018ND
2019-04-29Q19169640022.21 ppb
2019-04-29Q19169640041.08 ppb
2019-04-29Q19169640011.10 ppb
2019-04-29Q19169640031.000 ppb
2019-07-25Q19477180011.67 ppb
2019-07-25Q19477180032.46 ppb
2019-07-25Q19477180041.46 ppb
2019-07-25Q19477180051.59 ppb
2019-07-25Q19477180061.61 ppb
2019-11-14Q19769030011.46 ppb
2019-11-14Q1976903002ND
2019-11-14Q1976903003ND
2019-11-14Q19769030041.10 ppb