EWG's Tap Water Database


Dibromoacetic acid

Public Wholesale WSD 5

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
20101.68 ppb16160.730 ppb - 3.40 ppb
20113.33 ppb16161.40 ppb - 5.70 ppb
20125.01 ppb16161.40 ppb - 9.30 ppb
20133.93 ppb12120.520 ppb - 9.40 ppb
20141.29 ppb220.770 ppb - 1.80 ppb
20151.39 ppb43ND - 2.90 ppb

ppb = parts per billion.

All test results

Date Lab ID Result
2010-01-18541106DF1.90 ppb
2010-01-18541107DF0.730 ppb
2010-01-18541108DF1.60 ppb
2010-01-18541109DF1.40 ppb
2010-04-05544206DF0.830 ppb
2010-04-05544205DF0.830 ppb
2010-04-05544204DF0.820 ppb
2010-04-05544203DF0.810 ppb
2010-07-19548494DF1.60 ppb
2010-07-19548493DF1.40 ppb
2010-07-19548492DF1.40 ppb
2010-07-19548484DF1.40 ppb
2010-11-08553802DF3.40 ppb
2010-11-08553803DF2.80 ppb
2010-11-08553804DF2.70 ppb
2010-11-08553805DF3.20 ppb
2011-01-17557425DF5.10 ppb
2011-01-17557424DF4.60 ppb
2011-01-17557423DF4.20 ppb
2011-01-17557422DF4.30 ppb
2011-04-11560141DF1.50 ppb
2011-04-11560142DF2.40 ppb
2011-04-11560143DF1.50 ppb
2011-04-11560144DF1.40 ppb
2011-07-18564579DF2.60 ppb
2011-07-18564578DF2.00 ppb
2011-07-18564577DF2.00 ppb
2011-07-18564576DF2.10 ppb
2011-10-10569777DF4.50 ppb
2011-10-10569778DF4.60 ppb
2011-10-10569779DF4.70 ppb
2011-10-10569780DF5.70 ppb
2012-01-23572797DF6.50 ppb
2012-01-23572796DF7.00 ppb
2012-01-23572795DF4.20 ppb
2012-01-23572794DF5.20 ppb
2012-04-09577280DF1.40 ppb
2012-04-09577281DF1.60 ppb
2012-04-09577282DF2.30 ppb
2012-04-09577283DF2.30 ppb
2012-07-16581872DF5.50 ppb
2012-07-16581873DF5.80 ppb
2012-07-16581874DF5.50 ppb
2012-07-16581875DF6.70 ppb
2012-10-15586694DF5.70 ppb
2012-10-15586693DF5.60 ppb
2012-10-15586691DF9.30 ppb
2012-10-15586692DF5.60 ppb
2013-01-14589443DF9.40 ppb
2013-01-14589444DF7.60 ppb
2013-01-14589445DF7.20 ppb
2013-01-14589446DF8.20 ppb
2013-04-15594681DF0.960 ppb
2013-04-15594680DF0.520 ppb
2013-04-15594679DF0.920 ppb
2013-04-15594678DF0.670 ppb
2013-07-15598790DF2.60 ppb
2013-07-15598789DF3.20 ppb
2013-07-15598788DF3.10 ppb
2013-07-15598787DF2.80 ppb
2014-07-141513920.770 ppb
2014-12-292528141.80 ppb
2015-01-052580212.10 ppb
2015-04-203166000.540 ppb
2015-10-194218182.90 ppb