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EWG's Tap Water Database — 2021 UPDATE

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Chlorodibromoacetic acid

Howard County Cons Public Water Supply District 1

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

 

33

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20146.27 ppb225.95 ppb - 6.59 ppb
2015ND20ND
20166.22 ppb226.19 ppb - 6.24 ppb
20173.03 ppb64ND - 7.04 ppb
20182.33 ppb75ND - 3.97 ppb
20192.39 ppb1411ND - 4.18 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chlorodibromoacetic 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
2014-06-30AC287096.59 ppb
2014-06-30AC287085.95 ppb
2015-07-10AC55733ND
2015-07-10AC55732ND
2016-06-27AC749296.24 ppb
2016-06-27AC749306.19 ppb
2017-06-27AC985276.32 ppb
2017-06-27AC985287.04 ppb
2017-09-25AD07508ND
2017-09-25AD07509ND
2017-12-18AD106532.67 ppb
2017-12-18AD106542.14 ppb
2018-03-21AD16531ND
2018-03-21AD16532ND
2018-06-27AD273442.96 ppb
2018-06-27AD273432.75 ppb
2018-10-01AD341413.97 ppb
2018-10-01AD329663.28 ppb
2018-10-01AD329653.36 ppb
2019-01-08AD38619ND
2019-01-08AD38620ND
2019-03-25AD405563.99 ppb
2019-03-25AD405573.05 ppb
2019-03-25AD405582.70 ppb
2019-06-17AD491583.89 ppb
2019-06-17AD491593.43 ppb
2019-06-17AD49157ND
2019-09-16AD552401.56 ppb
2019-09-16AD552422.02 ppb
2019-09-16AD552411.35 ppb
2019-12-16AD591453.31 ppb
2019-12-16AD591464.18 ppb
2019-12-16AD591473.92 ppb