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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Duncanville

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.

 

93

Samples

0

Samples exceeding legal limit (MCL)

44

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.515 ppb135ND - 1.50 ppb
20131.34 ppb1612ND - 2.75 ppb
20141.86 ppb16161.20 ppb - 2.70 ppb
20150.571 ppb165ND - 2.00 ppb
2016ND160ND
20170.489 ppb166ND - 1.44 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
2012-02-211202590004ND
2012-06-131206493004ND
2012-06-1312064930031.000 ppb
2012-06-131206493002ND
2012-06-131206493001ND
2012-09-131209454004ND
2012-09-131209454003ND
2012-09-131209454002ND
2012-09-131209454001ND
2012-12-0312121150021.50 ppb
2012-12-0312121150011.40 ppb
2012-12-0312121150031.40 ppb
2012-12-0312121150041.40 ppb
2013-02-1313024810071.40 ppb
2013-02-1313024810061.70 ppb
2013-02-1313024810051.60 ppb
2013-02-1313024810041.10 ppb
2013-04-291304A090041.30 ppb
2013-04-291304A090031.30 ppb
2013-04-291304A090021.30 ppb
2013-04-291304A090011.30 ppb
2013-07-23Q1304169007ND
2013-07-23Q1304169005ND
2013-07-23Q1304169006ND
2013-07-23Q1304169008ND
2013-11-13Q13131350082.69 ppb
2013-11-13Q13131350072.75 ppb
2013-11-13Q13131350062.70 ppb
2013-11-13Q13131350052.34 ppb
2014-02-24Q14058530041.91 ppb
2014-02-24Q14058530031.87 ppb
2014-02-24Q14058530022.12 ppb
2014-02-24Q14058530012.08 ppb
2014-05-15Q14166000031.20 ppb
2014-05-15Q14166000012.70 ppb
2014-05-15Q14166000021.80 ppb
2014-05-15Q14166000041.30 ppb
2014-07-11Q14274740031.20 ppb
2014-07-11Q14274740021.30 ppb
2014-07-11Q14274740011.60 ppb
2014-07-11Q14274740041.60 ppb
2014-10-27Q14539980072.10 ppb
2014-10-27Q14539980062.30 ppb
2014-10-27Q14539980052.60 ppb
2014-10-27Q14539980042.10 ppb
2015-03-19Q15104660031.90 ppb
2015-03-19Q15104660042.00 ppb
2015-03-19Q15104660022.00 ppb
2015-03-19Q15104660011.70 ppb
2015-06-16Q1522407004ND
2015-06-16Q1522407003ND
2015-06-16Q1522407002ND
2015-06-16Q1522407001ND
2015-09-21Q1536730004ND
2015-09-21Q1536730003ND
2015-09-21Q1536730002ND
2015-09-21Q1536730001ND
2015-11-23Q1546433003ND
2015-11-23Q15464330011.54 ppb
2015-11-23Q1546433002ND
2015-11-23Q1546433004ND
2016-01-21Q1602809004ND
2016-01-21Q1602809003ND
2016-01-21Q1602809002ND
2016-01-21Q1602809001ND
2016-04-06Q1613634006ND
2016-04-06Q1613634005ND
2016-04-06Q1613634004ND
2016-04-06Q1613634003ND
2016-07-14Q1628711004ND
2016-07-14Q1628711001ND
2016-07-14Q1628711002ND
2016-07-14Q1628711003ND
2016-10-28Q1646412002ND
2016-10-28Q1646412004ND
2016-10-28Q1646412001ND
2016-10-28Q1646412003ND
2017-01-11Q1701552001ND
2017-01-11Q1701552005ND
2017-01-11Q1701552002ND
2017-01-11Q1701552006ND
2017-04-12Q1715260004ND
2017-04-12Q1715260003ND
2017-04-12Q1715260002ND
2017-04-12Q1715260001ND
2017-07-26Q1731044003ND
2017-07-26Q1731044004ND
2017-07-26Q17310440021.37 ppb
2017-07-26Q17310440011.13 ppb
2017-11-08Q17573380011.36 ppb
2017-11-08Q17573380041.44 ppb
2017-11-08Q17573380021.32 ppb
2017-11-08Q17573380031.20 ppb