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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Waukesha Water Utility

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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.760 ppb108ND - 1.50 ppb
20130.352 ppb54ND - 0.880 ppb
20140.444 ppb95ND - 1.40 ppb
20150.332 ppb64ND - 0.830 ppb
20161.20 ppb221.10 ppb - 1.30 ppb
20170.617 ppb105ND - 1.90 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
2012-03-206550590.360 ppb
2012-03-20655057ND
2012-05-22664036ND
2012-08-026762061.50 ppb
2012-08-026762011.50 ppb
2012-08-026762041.30 ppb
2012-08-026762051.20 ppb
2012-08-026762020.870 ppb
2012-08-026762030.580 ppb
2012-08-026762000.290 ppb
2013-02-20706218ND
2013-02-207062220.190 ppb
2013-02-207062200.400 ppb
2013-08-277401510.290 ppb
2013-08-277401520.880 ppb
2014-03-26776753ND
2014-03-267767550.200 ppb
2014-05-077844250.570 ppb
2014-05-077844220.430 ppb
2014-05-07784419ND
2014-06-11796100ND
2014-06-11796103ND
2014-08-128105261.40 ppb
2014-08-128105251.40 ppb
2015-03-108478530.290 ppb
2015-03-108478510.420 ppb
2015-03-11847855ND
2015-08-318796120.450 ppb
2015-08-318796110.830 ppb
2015-09-29886380ND
2016-07-149333761.10 ppb
2016-07-149333771.30 ppb
2017-03-28980078ND
2017-03-289800840.380 ppb
2017-03-289800810.670 ppb
2017-05-02986361ND
2017-05-02986364ND
2017-05-31994537ND
2017-05-31994540ND
2017-07-031707308-002A1.35 ppb
2017-07-031707308-001A1.87 ppb
2017-10-1110239341.90 ppb