Dibromoacetic acid

City of Mount Vernon

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	2	ND - 2.30 ppb
2015	ND	4	0	ND
2016	ND	4	0	ND
2017	0.850 ppb	4	3	ND - 1.30 ppb
2018	0.800 ppb	4	3	ND - 1.10 ppb
2019	ND	4	0	ND

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
2014-03-05	Q1407173001	1.60 ppb
2014-05-27	Q1417907004	ND
2014-09-02	Q1440615003	ND
2014-11-21	Q1457135001	2.30 ppb
2015-02-26	Q1507561005	ND
2015-06-15	Q1522028001	ND
2015-09-22	Q1537066002	ND
2015-12-01	Q1547505001	ND
2016-03-28	Q1612649001	ND
2016-05-31	Q1621673001	ND
2016-09-21	Q1639243003	ND
2016-12-07	Q1653457001	ND
2017-03-14	Q1710576001	ND
2017-05-23	Q1721877001	1.30 ppb
2017-09-05	Q1741541004	1.10 ppb
2017-11-16	Q1759106001	1.000 ppb
2018-02-21	Q1807253003	1.000 ppb
2018-05-24	Q1820902001	ND
2018-09-10	Q1835622003	1.10 ppb
2018-11-08	Q1844906001	1.10 ppb
2019-03-04	Q1909013009	ND
2019-05-09	Q1923236001	ND
2019-09-19	Q1966996003	ND
2019-11-25	Q1978054001	ND