Dibromoacetic acid

Rincon Del Diablo MWD(ID-1)

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	1.76 ppb	10	3	ND - 7.30 ppb
2015	0.911 ppb	18	10	ND - 2.60 ppb
2016	0.754 ppb	13	7	ND - 1.60 ppb
2017	1.59 ppb	12	10	ND - 2.80 ppb
2018	1.09 ppb	11	6	ND - 2.70 ppb
2019	1.33 ppb	12	8	ND - 3.00 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
2014-02-11	4790-903-1012	ND
2014-02-11	4790-902-0811	ND
2014-02-11	4790-901-0947	ND
2014-02-11	4790-900-0907	ND
2014-08-05	4790-903-0930	ND
2014-08-05	4790-902-0740	3.60 ppb
2014-08-05	4790-901-0945	ND
2014-08-05	4790-901-0810	6.70 ppb
2014-08-05	4790-900-0848	ND
2014-08-05	4790-900-0833	7.30 ppb
2015-02-03	4790-901-1007	ND
2015-02-03	4790-902-0820	ND
2015-02-03	4790-903-1023	ND
2015-02-03	4790-900-1113	ND
2015-05-12	4790-903-1015	2.00 ppb
2015-05-12	4790-902-0835	1.30 ppb
2015-05-12	4790-901-1030	2.40 ppb
2015-05-12	4790-900-0930	1.50 ppb
2015-08-04	4790-900-1150	ND
2015-08-04	4790-901-1128	ND
2015-08-04	4790-903-1114	1.20 ppb
2015-08-04	4790-902-1225	1.20 ppb
2015-11-03	4790-900-0910	ND
2015-11-03	4790-903-0945	1.10 ppb
2015-11-03	4790-902-0815	ND
2015-11-03	4790-900-1115	2.60 ppb
2015-11-03	4790-901-1000	1.10 ppb
2015-11-03	4790-901-1040	2.00 ppb
2016-02-02	4790-900-0928	ND
2016-05-03	4790-900-1100	ND
2016-05-03	4790-902-1135	ND
2016-05-03	4790-901-0931	ND
2016-05-03	4790-903-0917	ND
2016-08-02	4790-901-1053	1.40 ppb
2016-08-02	4790-900-1008	1.40 ppb
2016-08-02	4790-902-0908	ND
2016-08-02	4790-903-1113	1.40 ppb
2016-11-01	4790-901-1025	1.60 ppb
2016-11-01	4790-902-0840	1.20 ppb
2016-11-01	4790-903-0925	1.40 ppb
2016-11-01	4790-900-0930	1.40 ppb
2017-05-02	4790-901-0931	2.00 ppb
2017-05-02	4790-902-1050	ND
2017-05-02	4790-903-0955	2.00 ppb
2017-05-02	4790-900-1016	1.60 ppb
2017-08-08	4790-900-0938	1.80 ppb
2017-08-08	4790-903-1020	1.50 ppb
2017-08-08	4790-902-0902	1.60 ppb
2017-08-08	4790-901-1036	1.90 ppb
2017-11-07	4790-902-1120	2.20 ppb
2017-11-07	4790-900-0950	1.70 ppb
2017-11-07	4790-901-0855	ND
2017-11-07	4790-903-0910	2.80 ppb
2018-02-13	4790-902-0823	ND
2018-02-13	4790-900-0915	1.30 ppb
2018-02-13	4790-901-1125	2.40 ppb
2018-02-13	4790-903-0945	2.00 ppb
2018-05-08	4790-902-0849	ND
2018-05-08	4790-900-0930	ND
2018-05-08	4790-903-1010	ND
2018-08-07	4790-901-1115	1.60 ppb
2018-08-07	4790-903-1005	2.00 ppb
2018-08-07	4790-902-0920	ND
2018-08-07	4790-900-1230	2.70 ppb
2019-02-04	4790-903-1115	ND
2019-02-04	4790-901-1100	ND
2019-02-04	4790-900-1145	ND
2019-02-05	4790-902-0920	ND
2019-05-06	4790-903-1200	3.00 ppb
2019-05-06	4790-902-1050	2.20 ppb
2019-05-06	4790-901-1215	2.90 ppb
2019-05-06	4790-900-1130	1.90 ppb
2019-11-04	4790-903-1100	1.40 ppb
2019-11-04	4790-902-0910	1.10 ppb
2019-11-04	4790-900-0940	1.80 ppb
2019-11-04	4790-901-1010	1.60 ppb