Dibromoacetic acid

City of Vancouver

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
2013	N/A	0	0	N/A
2014	ND	3	0	ND
2015	ND	6	0	ND
2016	ND	10	0	ND
2017	ND	10	0	ND
2018	0.268 ppb	8	2	ND - 1.10 ppb
2019	0.300 ppb	8	2	ND - 1.30 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
2014-06-25	60257	ND
2014-09-23	40468	ND
2014-12-11	20398	ND
2015-03-26	70046	ND
2015-03-26	70045	ND
2015-06-25	30188	ND
2015-06-25	30187	ND
2015-09-23	60073	ND
2015-09-23	60072	ND
2016-01-06		ND
2016-01-06		ND
2016-03-16		ND
2016-03-16		ND
2016-06-16		ND
2016-06-16		ND
2016-09-15		ND
2016-09-15		ND
2016-11-09		ND
2016-11-09		ND
2017-03-15		ND
2017-03-15		ND
2017-06-07		ND
2017-06-07		ND
2017-09-13		ND
2017-09-13		ND
2017-12-05		ND
2017-12-05		ND
2017-12-05		ND
2017-12-05		ND
2018-02-28		ND
2018-02-28		ND
2018-06-13		ND
2018-06-13		ND
2018-09-12		ND
2018-09-12		ND
2018-12-12		1.10 ppb
2018-12-12		1.04 ppb
2019-03-13		ND
2019-03-13		ND
2019-06-19		ND
2019-06-19		ND
2019-09-18		ND
2019-09-18		1.30 ppb
2019-11-13		ND
2019-11-13		1.10 ppb