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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Harrison W Department

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

42

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.835 ppb1612ND - 1.86 ppb
20151.04 ppb16160.555 ppb - 1.97 ppb
20160.0668 ppb162ND - 0.560 ppb
20170.368 ppb168ND - 1.05 ppb
2018ND160ND
20190.197 ppb164ND - 0.978 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
2014-02-10AB46996TH1.46 ppb
2014-02-10AB46997TH1.86 ppb
2014-02-10AB46998TH1.81 ppb
2014-02-10AB46999TH1.38 ppb
2014-05-09AB50643THND
2014-05-09AB50644THND
2014-05-09AB50642THND
2014-05-09AB50645THND
2014-08-07AB54397TH0.833 ppb
2014-08-07AB54398TH0.610 ppb
2014-08-07AB54396TH1.10 ppb
2014-08-07AB54399TH0.919 ppb
2014-11-10AB58225TH0.985 ppb
2014-11-10AB58224TH0.767 ppb
2014-11-10AB58223TH0.809 ppb
2014-11-10AB58226TH0.833 ppb
2015-02-09AB61598TH0.871 ppb
2015-02-09AB61596TH0.802 ppb
2015-02-09AB61595TH0.762 ppb
2015-02-09AB61597TH1.05 ppb
2015-05-08AB65306TH0.794 ppb
2015-05-08AB65303TH0.718 ppb
2015-05-08AB65304TH0.748 ppb
2015-05-08AB65305TH0.773 ppb
2015-08-07AB69529TH1.97 ppb
2015-08-07AB69526TH1.94 ppb
2015-08-07AB69527TH1.59 ppb
2015-08-07AB69528TH1.64 ppb
2015-11-09AB73478TH0.766 ppb
2015-11-09AB73481TH0.797 ppb
2015-11-09AB73479TH0.824 ppb
2015-11-09AB73480TH0.555 ppb
2016-02-08AB76946THND
2016-02-08AB76943THND
2016-02-08AB76945THND
2016-02-08AB76944THND
2016-05-09AB80930THND
2016-05-09AB80932THND
2016-05-09AB80933THND
2016-05-09AB80931THND
2016-08-08AB84930THND
2016-08-08AB84932TH0.560 ppb
2016-08-08AB84933THND
2016-08-08AB84931THND
2016-11-07AB89005THND
2016-11-07AB89004THND
2016-11-07AB89007TH0.509 ppb
2016-11-07AB89006THND
2017-02-10AB92683TH0.910 ppb
2017-02-10AB92681TH0.710 ppb
2017-02-10AB92684TH1.05 ppb
2017-02-10AB92682TH0.720 ppb
2017-05-08AB96181THND
2017-05-08AB96180THND
2017-05-08AB96178THND
2017-05-08AB96179THND
2017-08-08AB99905TH0.610 ppb
2017-08-08AB99903TH0.640 ppb
2017-08-08AB99904TH0.650 ppb
2017-08-08AB99906TH0.600 ppb
2017-11-08AC03652THND
2017-11-08AC03654THND
2017-11-08AC03653THND
2017-11-08AC03651THND
2018-02-08AC07184THND
2018-02-08AC07181THND
2018-02-08AC07182THND
2018-02-08AC07183THND
2018-05-09AC10735THND
2018-05-09AC10732THND
2018-05-09AC10734THND
2018-05-09AC10733THND
2018-08-08AC14544THND
2018-08-08AC14543THND
2018-08-08AC14545THND
2018-08-08AC14542THND
2018-11-08AC18577THND
2018-11-08AC18576THND
2018-11-08AC18578THND
2018-11-08AC18575THND
2019-02-07AC22367THND
2019-02-07AC22370THND
2019-02-07AC22368THND
2019-02-07AC22369THND
2019-05-09AC26370THND
2019-05-09AC26369THND
2019-05-09AC26367THND
2019-05-09AC26368THND
2019-08-08AC30531TH0.978 ppb
2019-08-08AC30528TH0.699 ppb
2019-08-08AC30529TH0.554 ppb
2019-08-08AC30530TH0.925 ppb
2019-11-07AC34910THND
2019-11-07AC34911THND
2019-11-07AC34912THND
2019-11-07AC34913THND