Dibromoacetic acid

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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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.975 ppb	4	3	ND - 1.50 ppb
2015	0.685 ppb	4	3	ND - 1.20 ppb
2016	0.430 ppb	4	2	ND - 0.930 ppb
2017	0.773 ppb	4	4	0.560 ppb - 1.10 ppb
2018	0.695 ppb	4	3	ND - 1.10 ppb
2019	0.783 ppb	4	3	ND - 1.80 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
2014-02-10	60028	1.20 ppb
2014-05-05	109822	1.50 ppb
2014-08-05	167559	ND
2014-11-11	230225	1.20 ppb
2015-02-02	271318	1.20 ppb
2015-05-03	322035	0.590 ppb
2015-08-03	378202	ND
2015-11-30	427853	0.950 ppb
2016-02-08	490731	0.930 ppb
2016-05-08	540618	0.790 ppb
2016-08-08	600127	ND
2016-11-07	656958	ND
2017-02-13	708206	0.670 ppb
2017-05-16	762684	0.560 ppb
2017-08-21	823844	0.760 ppb
2017-12-11	891922	1.10 ppb
2018-02-12	907017	0.790 ppb
2018-05-14	970887	0.890 ppb
2018-08-13	1025538	1.10 ppb
2018-11-13	1077212	ND
2019-02-11	1120278	ND
2019-05-13	1157325	0.670 ppb
2019-08-11	1221593	0.660 ppb
2019-11-12	1274814	1.80 ppb