Dibromoacetic acid

Folsom Water Supply

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	ND	4	0	ND
2015	ND	4	0	ND
2016	0.485 ppb	4	2	ND - 0.970 ppb
2017	0.785 ppb	4	4	0.710 ppb - 0.860 ppb
2018	1.25 ppb	4	4	1.20 ppb - 1.30 ppb
2019	0.920 ppb	4	4	0.900 ppb - 0.940 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
2014-12-01	2013004002	ND
2014-12-01	2013004001	ND
2014-12-01	2013004002	ND
2014-12-01	2013004001	ND
2015-09-22	2026000001	ND
2015-09-22	2026000001	ND
2015-09-22	2026000002	ND
2015-09-22	2026000002	ND
2016-09-13	2042588001	0.970 ppb
2016-09-13	2042589001	ND
2016-09-13	2042589001	ND
2016-09-13	2042588001	0.970 ppb
2017-09-11	35335605008	0.710 ppb
2017-09-11	35335605008	0.710 ppb
2017-09-11	35335605007	0.860 ppb
2017-09-11	35335605007	0.860 ppb
2018-09-19	35419132002	1.30 ppb
2018-09-19	35419132001	1.20 ppb
2018-09-19	35419132001	1.20 ppb
2018-09-19	35419132002	1.30 ppb
2019-09-05	35495474001	0.940 ppb
2019-09-05	35495474002	0.900 ppb
2019-09-05	35495474001	0.940 ppb
2019-09-05	35495474002	0.900 ppb