EWG's Tap Water Database — 2019 UPDATE


Dibromoacetic acid

Waukesha Water Utility

Dibromoacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20120.821 ppb770.320 ppb - 1.40 ppb
20130.885 ppb220.790 ppb - 0.980 ppb
20141.50 ppb221.50 ppb
20150.545 ppb220.420 ppb - 0.670 ppb
20161.15 ppb221.10 ppb - 1.20 ppb
20171.26 ppb331.10 ppb - 1.35 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.04 ppb

The EWG Health Guideline of 0.04 ppb for dibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2012-08-026762030.500 ppb
2012-08-026762010.840 ppb
2012-08-026762020.840 ppb
2012-08-026762050.850 ppb
2012-08-026762041.000 ppb
2012-08-026762061.40 ppb
2012-08-026762000.320 ppb
2013-08-277401510.790 ppb
2013-08-277401520.980 ppb
2014-08-128105251.50 ppb
2014-08-128105261.50 ppb
2015-08-318796120.420 ppb
2015-08-318796110.670 ppb
2016-07-149333761.10 ppb
2016-07-149333771.20 ppb
2017-07-031707308-001B1.34 ppb
2017-07-031707308-002B1.35 ppb
2017-10-1110239341.10 ppb