Dibromoacetic acid

Acton Water Supply District

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	N/A	0	0	N/A
2015	0.221 ppb	16	2	ND - 2.14 ppb
2016	0.646 ppb	16	6	ND - 3.04 ppb
2017	0.455 ppb	16	5	ND - 2.10 ppb
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

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	Result
2015-02-18	ND
2015-02-18	ND
2015-02-18	ND
2015-02-19	ND
2015-05-22	ND
2015-05-22	ND
2015-05-22	ND
2015-05-22	ND
2015-08-19	ND
2015-08-19	2.14 ppb
2015-08-19	ND
2015-08-19	1.39 ppb
2015-11-18	ND
2015-11-18	ND
2015-11-19	ND
2015-11-19	ND
2016-02-17	ND
2016-02-17	ND
2016-02-17	1.84 ppb
2016-02-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	ND
2016-05-17	1.90 ppb
2016-08-16	1.17 ppb
2016-08-16	ND
2016-08-16	ND
2016-08-16	3.04 ppb
2016-11-15	1.09 ppb
2016-11-15	ND
2016-11-16	ND
2016-11-16	1.29 ppb
2017-02-15	ND
2017-02-15	1.09 ppb
2017-02-15	2.10 ppb
2017-02-15	ND
2017-05-17	1.16 ppb
2017-05-17	ND
2017-05-17	ND
2017-05-17	ND
2017-08-16	ND
2017-08-16	1.77 ppb
2017-08-16	ND
2017-08-16	ND
2017-11-16	ND
2017-11-16	1.16 ppb
2017-11-16	ND
2017-11-17	ND