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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

South Milwaukee Waterworks

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.211 ppb179ND - 0.590 ppb
20150.201 ppb1710ND - 0.800 ppb
20160.0541 ppb174ND - 0.260 ppb
2017ND170ND
20180.00824 ppb171ND - 0.140 ppb
20190.0435 ppb172ND - 0.530 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
2014-02-117700860.270 ppb
2014-02-117700870.270 ppb
2014-02-117700880.290 ppb
2014-02-117700850.300 ppb
2014-04-077782840.270 ppb
2014-05-13785431ND
2014-05-13785434ND
2014-05-13785432ND
2014-05-13785433ND
2014-08-138103750.500 ppb
2014-08-138103720.540 ppb
2014-08-138103740.560 ppb
2014-08-138103730.590 ppb
2014-11-11830836ND
2014-11-11830838ND
2014-11-11830837ND
2014-11-11830839ND
2015-02-10842721ND
2015-02-108427200.350 ppb
2015-02-108427230.380 ppb
2015-02-108427220.800 ppb
2015-03-038460450.330 ppb
2015-05-12859498ND
2015-05-12859499ND
2015-05-128594970.250 ppb
2015-05-128595000.260 ppb
2015-08-118763020.240 ppb
2015-08-118763030.260 ppb
2015-08-118763040.260 ppb
2015-08-118763010.290 ppb
2015-11-10893367ND
2015-11-10893366ND
2015-11-10893364ND
2015-11-10893365ND
2016-02-10904963ND
2016-02-10904964ND
2016-02-10904962ND
2016-02-10904961ND
2016-03-079083010.210 ppb
2016-05-10920426ND
2016-05-10920428ND
2016-05-10920425ND
2016-05-10920427ND
2016-08-16939732ND
2016-08-169397310.220 ppb
2016-08-169397300.230 ppb
2016-08-169397330.260 ppb
2016-11-08957993ND
2016-11-08957995ND
2016-11-08957994ND
2016-11-08957992ND
2017-02-15973981ND
2017-02-15973979ND
2017-02-15973978ND
2017-02-15973980ND
2017-04-19984215ND
2017-05-11988146ND
2017-05-11988148ND
2017-05-11988149ND
2017-05-11988147ND
2017-08-161011995ND
2017-08-161011996ND
2017-08-161011993ND
2017-08-161011994ND
2017-11-081028780ND
2017-11-081028781ND
2017-11-081028783ND
2017-11-081028782ND
2018-02-131040779ND
2018-02-131040777ND
2018-02-131040780ND
2018-02-131040778ND
2018-04-0310481250.140 ppb
2018-05-141055405ND
2018-05-141055404ND
2018-05-141055402ND
2018-05-141055403ND
2018-08-131073457ND
2018-08-131073459ND
2018-08-131073456ND
2018-08-131073458ND
2018-11-121092512ND
2018-11-121092513ND
2018-11-121092515ND
2018-11-121092514ND
2019-02-181105927ND
2019-02-181105925ND
2019-02-181105928ND
2019-02-1811059260.210 ppb
2019-03-041107529ND
2019-05-151121393ND
2019-05-151121391ND
2019-05-151121394ND
2019-05-151121392ND
2019-08-121140148ND
2019-08-121140145ND
2019-08-121140147ND
2019-08-1211401460.530 ppb
2019-11-111160231ND
2019-11-111160232ND
2019-11-111160230ND
2019-11-111160233ND