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EWG's Tap Water Database — 2021 UPDATE

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Tribromoacetic acid

Howard County Cons Public Water Supply District 1

Tribromoacetic 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)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.30 ppb222.23 ppb - 2.36 ppb
2015ND20ND
20161.26 ppb21ND - 2.52 ppb
20171.35 ppb62ND - 5.00 ppb
20182.16 ppb75ND - 3.70 ppb
20190.894 ppb143ND - 5.89 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 tribromoacetic 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
2014-06-30AC287092.36 ppb
2014-06-30AC287082.23 ppb
2015-07-10AC55732ND
2015-07-10AC55733ND
2016-06-27AC74929ND
2016-06-27AC749302.52 ppb
2017-06-27AC985275.00 ppb
2017-06-27AC98528ND
2017-09-25AD075083.11 ppb
2017-09-25AD07509ND
2017-12-18AD10653ND
2017-12-18AD10654ND
2018-03-21AD16531ND
2018-03-21AD16532ND
2018-06-27AD273443.20 ppb
2018-06-27AD273433.70 ppb
2018-10-01AD341413.09 ppb
2018-10-01AD329662.33 ppb
2018-10-01AD329652.82 ppb
2019-01-08AD38619ND
2019-01-08AD38620ND
2019-03-25AD40556ND
2019-03-25AD40557ND
2019-03-25AD405583.30 ppb
2019-06-17AD49158ND
2019-06-17AD49159ND
2019-06-17AD491575.89 ppb
2019-09-16AD55240ND
2019-09-16AD55242ND
2019-09-16AD55241ND
2019-12-16AD59145ND
2019-12-16AD591463.32 ppb
2019-12-16AD59147ND