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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Liberty

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

 

65

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.11 ppb1816ND - 1.55 ppb
20150.361 ppb178ND - 0.880 ppb
2016ND170ND
2017ND70ND
2018ND30ND
2019ND30ND

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
2014-01-29AC166461.36 ppb
2014-01-29AC166451.45 ppb
2014-01-29AC166481.45 ppb
2014-01-29AC166471.34 ppb
2014-04-09AC22390ND
2014-04-09AC223911.13 ppb
2014-04-30AC215521.06 ppb
2014-04-30AC215531.11 ppb
2014-04-30AC215541.14 ppb
2014-04-30AC215551.27 ppb
2014-07-23AC305631.48 ppb
2014-07-23AC305621.55 ppb
2014-07-23AC305611.54 ppb
2014-07-23AC305601.41 ppb
2014-12-03AC376120.740 ppb
2014-12-03AC37613ND
2014-12-03AC376140.810 ppb
2014-12-03AC376151.14 ppb
2015-01-14AC40339ND
2015-01-14AC40337ND
2015-01-14AC40338ND
2015-01-14AC40336ND
2015-04-27AC45636ND
2015-04-28AC45014ND
2015-04-28AC45015ND
2015-04-28AC45016ND
2015-04-28AC45017ND
2015-08-05AC542330.880 ppb
2015-08-05AC542320.840 ppb
2015-08-05AC542310.710 ppb
2015-08-05AC542300.800 ppb
2015-10-22AC611770.740 ppb
2015-10-22AC611740.730 ppb
2015-10-22AC611750.660 ppb
2015-10-22AC611760.770 ppb
2016-01-14AC64980ND
2016-01-14AC64981ND
2016-01-14AC64982ND
2016-01-14AC64979ND
2016-04-26AC69972ND
2016-05-02AC72909ND
2016-05-02AC72911ND
2016-05-02AC72910ND
2016-05-02AC72908ND
2016-07-11AC79670ND
2016-07-11AC79669ND
2016-07-11AC79668ND
2016-07-11AC79667ND
2016-10-25AC86250ND
2016-10-25AC86249ND
2016-10-25AC86247ND
2016-10-25AC86248ND
2017-01-17AC89058ND
2017-01-17AC89057ND
2017-01-17AC89059ND
2017-01-17AC89060ND
2017-04-11AC95006ND
2017-07-07AD01345ND
2017-07-07AD01346ND
2018-05-07AD18558ND
2018-07-19AD29123ND
2018-07-19AD29124ND
2019-04-17AD46631ND
2019-07-10AD51740ND
2019-07-10AD51741ND