Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Bromoform

City of Denison

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.

 

118

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20128.86 ppb2110ND - 31.6 ppb
201312.3 ppb21215.88 ppb - 16.7 ppb
201424.9 ppb222211.2 ppb - 40.0 ppb
20154.26 ppb185ND - 23.2 ppb
20161.66 ppb184ND - 7.80 ppb
201712.4 ppb18181.31 ppb - 23.0 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
2012-02-011202040006ND
2012-02-011202040008ND
2012-02-011202040009ND
2012-02-011202040010ND
2012-02-011202040011ND
2012-02-011202040012ND
2012-04-181204479001ND
2012-04-181204479002ND
2012-04-181204479003ND
2012-04-181204479004ND
2012-04-181204479005ND
2012-09-17120966200114.9 ppb
2012-09-17120966200212.5 ppb
2012-09-17120966200314.8 ppb
2012-09-17120966200414.7 ppb
2012-09-17120966200531.6 ppb
2012-12-10121247100121.4 ppb
2012-12-10121247100220.7 ppb
2012-12-10121247100321.6 ppb
2012-12-10121247100420.0 ppb
2012-12-10121247100513.8 ppb
2013-03-06130326300512.4 ppb
2013-03-06130326301115.4 ppb
2013-03-06130326301214.8 ppb
2013-03-06130326301316.1 ppb
2013-03-06130326301414.9 ppb
2013-03-06130326301510.6 ppb
2013-06-12Q13022050066.91 ppb
2013-06-12Q13022050076.40 ppb
2013-06-12Q13022050085.88 ppb
2013-06-12Q13022050096.02 ppb
2013-06-12Q130220501013.1 ppb
2013-06-12Q130220501715.3 ppb
2013-09-03Q130644200612.8 ppb
2013-09-03Q130644200712.0 ppb
2013-09-03Q130644200812.8 ppb
2013-09-03Q130644200912.6 ppb
2013-09-03Q13064420106.90 ppb
2013-11-12Q131299500515.9 ppb
2013-11-12Q131299500614.6 ppb
2013-11-12Q131299500716.7 ppb
2013-11-12Q131299500816.6 ppb
2014-02-25Q140605900813.6 ppb
2014-02-25Q140605901211.2 ppb
2014-02-25Q140605900123.8 ppb
2014-02-25Q140605900219.0 ppb
2014-02-25Q140605900318.9 ppb
2014-02-25Q140605900419.9 ppb
2014-06-03Q141906100125.8 ppb
2014-06-03Q141906100226.9 ppb
2014-06-03Q141906100325.2 ppb
2014-06-03Q141906100426.1 ppb
2014-09-05Q144195700137.7 ppb
2014-09-05Q144195700235.9 ppb
2014-09-05Q144195700335.6 ppb
2014-09-05Q144195700440.0 ppb
2014-09-29Q144928900123.3 ppb
2014-09-29Q144928900226.1 ppb
2014-09-29Q144928900324.4 ppb
2014-09-29Q144928900423.8 ppb
2014-12-03Q145829100118.8 ppb
2014-12-03Q145829100229.9 ppb
2014-12-03Q145829100321.8 ppb
2014-12-03Q145829100420.7 ppb
2015-03-03Q15078940074.44 ppb
2015-03-03Q150789400314.4 ppb
2015-03-03Q150789400423.2 ppb
2015-03-03Q150789400518.0 ppb
2015-03-03Q150789400616.7 ppb
2015-06-15Q1522052001ND
2015-06-15Q1522052007ND
2015-06-15Q1522052008ND
2015-06-15Q1522052009ND
2015-06-15Q1522052010ND
2015-09-09Q1535063001ND
2015-09-09Q1535063002ND
2015-09-09Q1535063003ND
2015-09-09Q1535063004ND
2015-11-12Q1544566001ND
2015-11-12Q1544566002ND
2015-11-12Q1544566003ND
2015-11-12Q1544566004ND
2016-02-16Q1606768002ND
2016-02-16Q1606768003ND
2016-02-16Q1606768017ND
2016-02-16Q1606768018ND
2016-02-16Q1606768019ND
2016-02-16Q1606768020ND
2016-05-03Q1617227001ND
2016-05-03Q1617227002ND
2016-05-03Q1617227003ND
2016-05-03Q1617227004ND
2016-08-03Q1632105001ND
2016-08-03Q1632105002ND
2016-08-03Q1632105003ND
2016-08-03Q1632105004ND
2016-11-02Q16471500016.52 ppb
2016-11-02Q16471500027.71 ppb
2016-11-02Q16471500047.76 ppb
2016-11-02Q16471500037.80 ppb
2017-02-07Q170546600212.4 ppb
2017-02-07Q170546600711.2 ppb
2017-02-07Q170546600813.8 ppb
2017-02-07Q170546600914.4 ppb
2017-02-07Q170546601011.8 ppb
2017-05-03Q171842800111.8 ppb
2017-05-03Q171842800213.4 ppb
2017-05-03Q171842800313.2 ppb
2017-05-03Q171842800412.8 ppb
2017-08-08Q173379000219.4 ppb
2017-08-08Q173379001118.0 ppb
2017-08-08Q173379001222.4 ppb
2017-08-08Q173379001323.0 ppb
2017-08-08Q173379001420.0 ppb
2017-11-13Q17579670011.34 ppb
2017-11-13Q17579670021.36 ppb
2017-11-13Q17579670031.37 ppb
2017-11-13Q17579670041.31 ppb