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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

Los Angeles County Waterworks District 36-Val Verde

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.

MORE ABOUT THIS CONTAMINANT

 

24

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
20150.508 ppb82ND - 2.47 ppb
20160.251 ppb81ND - 2.01 ppb
2017ND40ND
2018N/A00N/A
2019N/A00N/A

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
2014-07-085442-801-0825ND
2014-07-085442-800-0930ND
2014-10-065442-801-0950ND
2014-10-065442-800-1040ND
2015-01-145442-800-0915ND
2015-01-145442-801-1012ND
2015-04-095442-800-0831ND
2015-04-095442-801-0908ND
2015-07-085442-801-08301.59 ppb
2015-07-085442-800-09452.47 ppb
2015-10-065442-801-0820ND
2015-10-065442-800-0930ND
2016-01-135442-801-0925ND
2016-01-135442-800-1015ND
2016-04-115442-801-1030ND
2016-04-115442-800-11252.01 ppb
2016-07-125442-800-1305ND
2016-07-125442-801-1215ND
2016-10-135442-800-1145ND
2016-10-135442-801-1050ND
2017-01-105442-800-1220ND
2017-01-105442-801-1154ND
2017-07-109588-800-0900ND
2017-07-109588-801-0950ND