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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

Bethesda WSC

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.40 ppb1611ND - 2.70 ppb
20150.250 ppb162ND - 3.00 ppb
20160.756 ppb166ND - 2.90 ppb
20170.506 ppb166ND - 1.70 ppb
20182.16 ppb1615ND - 4.60 ppb
20191.46 ppb1615ND - 2.10 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
2014-03-20Q14091140041.30 ppb
2014-03-20Q14091140031.70 ppb
2014-03-20Q14091140021.60 ppb
2014-03-20Q14091140012.30 ppb
2014-06-13Q14213280012.60 ppb
2014-06-13Q14213280142.20 ppb
2014-06-13Q1421328013ND
2014-06-13Q14213280122.70 ppb
2014-09-08Q1441954004ND
2014-09-08Q1441954003ND
2014-09-08Q14419540012.30 ppb
2014-09-08Q1441954002ND
2014-11-19Q14567300081.50 ppb
2014-11-19Q14567300072.10 ppb
2014-11-19Q1456730006ND
2014-11-19Q14567300052.10 ppb
2015-02-03Q1504044005ND
2015-02-03Q15040440083.00 ppb
2015-02-03Q1504044007ND
2015-02-03Q1504044006ND
2015-04-22Q1515039021ND
2015-04-22Q1515039022ND
2015-04-22Q1515039024ND
2015-04-22Q1515039023ND
2015-08-04Q1530233010ND
2015-08-04Q1530233009ND
2015-08-04Q1530233008ND
2015-08-04Q1530233007ND
2015-11-02Q15434320041.000 ppb
2015-11-02Q1543432003ND
2015-11-02Q1543432002ND
2015-11-02Q1543432001ND
2016-02-17Q1607184009ND
2016-02-17Q1607184008ND
2016-02-17Q16071840102.90 ppb
2016-02-17Q1607184011ND
2016-04-20Q16157210171.70 ppb
2016-04-20Q16157210162.20 ppb
2016-04-20Q1615721015ND
2016-04-20Q16157210142.30 ppb
2016-09-06Q1635394004ND
2016-09-06Q16353940031.30 ppb
2016-09-06Q1635394002ND
2016-09-06Q1635394001ND
2016-11-08Q1648213018ND
2016-11-08Q1648213021ND
2016-11-08Q16482130201.70 ppb
2016-11-08Q1648213019ND
2017-01-31Q1704122024ND
2017-01-31Q1704122011ND
2017-01-31Q1704122010ND
2017-01-31Q1704122009ND
2017-04-18Q1715805005ND
2017-04-18Q17158050041.70 ppb
2017-04-18Q1715805003ND
2017-04-18Q17158050021.60 ppb
2017-07-18Q17295120031.000 ppb
2017-07-18Q1729512002ND
2017-07-18Q1729512004ND
2017-07-18Q1729512005ND
2017-10-17Q1753293006ND
2017-10-17Q17532930231.40 ppb
2017-10-17Q17532930281.20 ppb
2017-10-17Q17532930321.20 ppb
2018-02-21Q18073220081.10 ppb
2018-02-21Q18073220021.30 ppb
2018-02-21Q1807322007ND
2018-02-21Q18073220061.30 ppb
2018-05-16Q18199570362.40 ppb
2018-05-16Q18199570372.20 ppb
2018-05-16Q18199570391.70 ppb
2018-05-16Q18199570382.50 ppb
2018-07-25Q18296070051.40 ppb
2018-07-25Q18296070041.70 ppb
2018-07-25Q18296070031.000 ppb
2018-07-25Q18296070021.50 ppb
2018-10-19Q18420520124.30 ppb
2018-10-19Q18420520114.60 ppb
2018-10-19Q18420520103.40 ppb
2018-10-19Q18420520094.10 ppb
2019-01-15Q19019900141.20 ppb
2019-01-15Q19019900131.40 ppb
2019-01-15Q19019900151.60 ppb
2019-01-15Q19019900161.30 ppb
2019-04-11Q19148860331.80 ppb
2019-04-11Q19148860321.90 ppb
2019-04-11Q1914886031ND
2019-04-11Q19148860301.60 ppb
2019-08-06Q19516200051.30 ppb
2019-08-06Q19516200041.10 ppb
2019-08-06Q19516200031.20 ppb
2019-08-06Q19516200021.10 ppb
2019-10-07Q19717840032.00 ppb
2019-10-07Q19717840061.80 ppb
2019-10-07Q19717840052.10 ppb
2019-10-07Q19717840041.90 ppb