EWG's Tap Water Database — 2021 UPDATE


Dibromoacetic acid

Malvern Water Supply

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
20141.16 ppb111.16 ppb
20150.510 ppb110.510 ppb
20160.710 ppb110.710 ppb
20170.860 ppb110.860 ppb
20180.660 ppb110.660 ppb
20190.820 ppb110.820 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
2014-07-1520655151.16 ppb
2015-07-141G51062-010.510 ppb
2016-07-111G60944-010.710 ppb
2017-07-171G71332-010.860 ppb
2018-07-091G80834-010.660 ppb
2019-07-301G92462-010.820 ppb