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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Cedar Hill

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.

 

97

Samples

0

Samples exceeding legal limit (MCL)

47

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.04 ppb1410ND - 1.80 ppb
20131.28 ppb1611ND - 3.21 ppb
20142.29 ppb16161.30 ppb - 3.40 ppb
20150.635 ppb174ND - 2.80 ppb
20160.0665 ppb171ND - 1.13 ppb
20170.387 ppb175ND - 1.74 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
2012-03-0712033290011.50 ppb
2012-03-0712033290021.80 ppb
2012-06-1212064330011.10 ppb
2012-06-1212064330041.10 ppb
2012-06-1212064330031.10 ppb
2012-06-1212064330021.30 ppb
2012-09-131209455005ND
2012-09-131209455006ND
2012-09-131209455007ND
2012-09-131209455008ND
2012-12-0312121160011.50 ppb
2012-12-0312121160031.80 ppb
2012-12-0312121160041.60 ppb
2012-12-0312121160021.70 ppb
2013-01-281301772003ND
2013-01-2813017720021.000 ppb
2013-01-2813017720011.000 ppb
2013-01-2813017720041.10 ppb
2013-04-2513049410051.40 ppb
2013-04-2513049410021.50 ppb
2013-04-2513049410031.40 ppb
2013-04-2513049410041.40 ppb
2013-07-23Q1304170008ND
2013-07-23Q1304170007ND
2013-07-23Q1304170006ND
2013-07-23Q1304170005ND
2013-10-28Q13099830052.74 ppb
2013-10-28Q13099830063.00 ppb
2013-10-28Q13099830073.21 ppb
2013-10-28Q13099830082.80 ppb
2014-03-17Q14084740041.50 ppb
2014-03-17Q14084740031.40 ppb
2014-03-17Q14084740021.30 ppb
2014-03-17Q14084740011.70 ppb
2014-06-03Q14188460011.90 ppb
2014-06-03Q14188460021.80 ppb
2014-06-03Q14188460031.80 ppb
2014-06-03Q14188460041.80 ppb
2014-09-18Q14456800063.30 ppb
2014-09-18Q14456800053.40 ppb
2014-09-18Q14456800043.40 ppb
2014-09-18Q14456800033.40 ppb
2014-12-04Q14586590012.50 ppb
2014-12-04Q14586590022.50 ppb
2014-12-04Q14586590032.50 ppb
2014-12-04Q14586590042.50 ppb
2015-03-10Q15086600032.80 ppb
2015-03-10Q15086600022.80 ppb
2015-03-10Q15086600042.70 ppb
2015-03-10Q15086600012.50 ppb
2015-06-04Q1520627004ND
2015-06-04Q1520627003ND
2015-06-04Q1520627002ND
2015-06-04Q1520627001ND
2015-08-18Q1532667001ND
2015-08-18Q1532667004ND
2015-08-18Q1532667005ND
2015-08-18Q1532667006ND
2015-08-18Q1532667007ND
2015-10-21Q1541384001ND
2015-10-21Q1541384002ND
2015-10-21Q1541384003ND
2015-10-21Q1541384004ND
2016-01-21Q1602811004ND
2016-01-21Q1602811003ND
2016-01-21Q1602811002ND
2016-01-21Q1602811001ND
2016-04-27Q16166380011.13 ppb
2016-04-27Q1616638002ND
2016-04-27Q1616638003ND
2016-04-27Q1616638004ND
2016-08-02Q1632098003ND
2016-08-02Q1632098001ND
2016-08-02Q1632098002ND
2016-08-02Q1632098004ND
2016-10-07Q1643132011ND
2016-10-07Q1643132010ND
2016-10-07Q1643132009ND
2016-10-07Q1643132008ND
2016-10-07Q1643132002ND
2017-01-11Q1701553006ND
2017-01-11Q17015530051.12 ppb
2017-01-11Q1701553003ND
2017-01-11Q1701553004ND
2017-04-12Q1715261001ND
2017-04-12Q1715261002ND
2017-04-12Q1715261003ND
2017-04-12Q1715261004ND
2017-07-26Q1731046002ND
2017-07-26Q1731046003ND
2017-07-26Q1731046004ND
2017-07-26Q1731046001ND
2017-08-23Q1737872005ND
2017-11-08Q17573390021.21 ppb
2017-11-08Q17573390041.27 ppb
2017-11-08Q17573390011.24 ppb
2017-11-08Q17573390031.74 ppb