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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloroacetic acid

St. Louis City

Bromodichloroacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloroacetic acid and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

MORE ABOUT THIS CONTAMINANT

 

30

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.34 ppb12121.03 ppb - 1.79 ppb
20150.786 ppb1211ND - 1.42 ppb
20160.242 ppb62ND - 0.830 ppb
2017N/A00N/A
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 bromodichloroacetic 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
2014-05-28AC261201.19 ppb
2014-05-28AC261191.79 ppb
2014-05-28AC261301.14 ppb
2014-05-28AC261291.11 ppb
2014-05-28AC261281.11 ppb
2014-05-28AC261271.45 ppb
2014-05-28AC261261.03 ppb
2014-05-28AC261251.52 ppb
2014-05-28AC261241.44 ppb
2014-05-28AC261231.30 ppb
2014-05-28AC261221.27 ppb
2014-05-28AC261211.78 ppb
2015-03-17AC446490.640 ppb
2015-03-17AC446500.670 ppb
2015-03-17AC446510.790 ppb
2015-03-17AC446541.13 ppb
2015-03-17AC446570.720 ppb
2015-03-17AC446590.920 ppb
2015-03-17AC446480.870 ppb
2015-03-17AC44652ND
2015-03-17AC446531.42 ppb
2015-03-17AC446550.960 ppb
2015-03-17AC446560.700 ppb
2015-03-17AC446580.610 ppb
2016-03-08AC68841ND
2016-03-08AC68840ND
2016-03-08AC688390.620 ppb
2016-03-08AC688370.830 ppb
2016-03-08AC68842ND
2016-03-08AC68838ND