EWG's Tap Water Database — 2021 UPDATE


Dibromoacetic acid

Coloma Waterworks

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
20140.340 ppb110.340 ppb
20160.440 ppb110.440 ppb
20170.280 ppb110.280 ppb
20180.220 ppb110.220 ppb
20190.350 ppb110.350 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
2014-08-208122090.340 ppb
2016-09-219475830.440 ppb
2017-08-1710122870.280 ppb
2018-08-2210757530.220 ppb
2019-08-1411409460.350 ppb