Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dibromoacetic acid

Lake St. John Waterworks District 1

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)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
20160.105 ppb162ND - 0.840 ppb
20170.446 ppb168ND - 1.20 ppb
20180.175 ppb164ND - 0.800 ppb
20190.810 ppb16160.600 ppb - 0.980 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
2014-03-191286870ND
2014-03-191286869ND
2014-03-191286870ND
2014-03-191286869ND
2014-06-181311307ND
2014-06-181311308ND
2014-06-181311308ND
2014-06-181311307ND
2014-09-171336426ND
2014-09-171336427ND
2014-09-171336427ND
2014-09-171336426ND
2014-12-161358963ND
2014-12-161358964ND
2014-12-161358964ND
2014-12-161358963ND
2015-03-181380990ND
2015-03-181380991ND
2015-03-181380991ND
2015-03-181380990ND
2015-06-171405012ND
2015-06-171405013ND
2015-06-171405013ND
2015-06-171405012ND
2015-09-161428328ND
2015-09-161428327ND
2015-09-161428328ND
2015-09-161428327ND
2015-12-161452166ND
2015-12-161452167ND
2015-12-161452167ND
2015-12-161452166ND
2016-03-151475113ND
2016-03-151475114ND
2016-03-151475114ND
2016-03-151475113ND
2016-06-131499803ND
2016-06-131499802ND
2016-06-131499803ND
2016-06-131499802ND
2016-09-28352680830010.840 ppb
2016-09-2835268083002ND
2016-09-2835268083002ND
2016-09-28352680830010.840 ppb
2016-12-1635286276001ND
2016-12-1635286276002ND
2016-12-1635286276002ND
2016-12-1635286276001ND
2017-03-0835300072002ND
2017-03-0835300072001ND
2017-03-0835300072001ND
2017-03-0835300072002ND
2017-06-0735317131010ND
2017-06-0735317131010ND
2017-06-0735317131011ND
2017-06-0735317131011ND
2017-09-13353357030120.740 ppb
2017-09-13353357030130.430 ppb
2017-09-13353357030120.740 ppb
2017-09-13353357030130.430 ppb
2017-12-20353649620021.20 ppb
2017-12-20353649620011.20 ppb
2017-12-20353649620011.20 ppb
2017-12-20353649620021.20 ppb
2018-03-2635382605002ND
2018-03-2635382605001ND
2018-03-2635382605002ND
2018-03-2635382605001ND
2018-06-0635397137002ND
2018-06-0635397137002ND
2018-06-06353971370010.600 ppb
2018-06-06353971370010.600 ppb
2018-09-1935419439002ND
2018-09-19354194390010.800 ppb
2018-09-19354194390010.800 ppb
2018-09-1935419439002ND
2018-12-1235437260001ND
2018-12-1235437260002ND
2018-12-1235437260001ND
2018-12-1235437260002ND
2019-03-18354563090020.970 ppb
2019-03-18354563090010.900 ppb
2019-03-18354563090010.900 ppb
2019-03-18354563090020.970 ppb
2019-06-19354771110020.940 ppb
2019-06-19354771110020.940 ppb
2019-06-19354771110010.980 ppb
2019-06-19354771110010.980 ppb
2019-09-16354985980020.760 ppb
2019-09-16354985980010.720 ppb
2019-09-16354985980010.720 ppb
2019-09-16354985980020.760 ppb
2019-12-10355182700010.600 ppb
2019-12-10355182700020.610 ppb
2019-12-10355182700010.600 ppb
2019-12-10355182700020.610 ppb