Dibromoacetic acid

Crescenta Valley CWD

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

135

Samples

Samples exceeding legal limit (MCL)

116

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	5.71 ppb	16	16	3.70 ppb - 9.80 ppb
2015	4.52 ppb	16	16	2.00 ppb - 6.00 ppb
2016	4.91 ppb	16	16	3.50 ppb - 6.60 ppb
2017	5.89 ppb	16	16	1.70 ppb - 8.30 ppb
2018	6.19 ppb	20	20	2.90 ppb - 9.00 ppb
2019	3.15 ppb	51	32	ND - 8.70 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
2014-02-04	5806-800-1034	9.80 ppb
2014-02-04	5806-801-0850	7.40 ppb
2014-02-04	5806-802-1150	6.50 ppb
2014-02-04	5806-803-1020	8.20 ppb
2014-05-06	5806-008-1147	4.40 ppb
2014-05-06	5806-801-1120	5.20 ppb
2014-05-06	5806-802-1017	3.70 ppb
2014-05-06	5806-803-1200	5.20 ppb
2014-08-05	5806-800-1014	5.90 ppb
2014-08-05	5806-801-0937	5.80 ppb
2014-08-05	5806-802-1152	3.70 ppb
2014-08-05	5806-803-1120	7.10 ppb
2014-11-06	5806-800-1136	4.10 ppb
2014-11-06	5806-801-1121	5.40 ppb
2014-11-06	5806-802-1111	3.70 ppb
2014-11-06	5806-803-1150	5.30 ppb
2015-02-03	5806-800-0849	5.70 ppb
2015-02-03	5806-801-0803	6.00 ppb
2015-02-03	5806-802-0910	4.60 ppb
2015-02-03	5806-803-0858	5.50 ppb
2015-05-05	5806-800-1205	5.00 ppb
2015-05-05	5806-801-0857	5.40 ppb
2015-05-05	5806-802-1005	4.70 ppb
2015-05-05	5806-803-1155	5.40 ppb
2015-08-04	5806-800-1017	2.90 ppb
2015-08-04	5806-801-1120	2.00 ppb
2015-08-04	5806-802-1110	4.40 ppb
2015-08-04	5806-803-1002	3.60 ppb
2015-11-03	5806-800-1010	5.10 ppb
2015-11-03	5806-801-1055	4.10 ppb
2015-11-03	5806-802-1001	3.50 ppb
2015-11-03	5806-803-1028	4.40 ppb
2016-02-02	5806-800-1055	6.60 ppb
2016-02-02	5806-801-1015	4.80 ppb
2016-02-02	5806-802-1040	3.80 ppb
2016-02-02	5806-803-1040	6.00 ppb
2016-05-04	5806-800-1048	5.60 ppb
2016-05-04	5806-801-1105	4.90 ppb
2016-05-04	5806-802-1022	4.40 ppb
2016-05-04	5806-803-1033	5.10 ppb
2016-08-02	5806-800-1210	3.50 ppb
2016-08-02	5806-801-1230	4.70 ppb
2016-08-02	5806-802-1240	6.10 ppb
2016-08-02	5806-803-1158	4.60 ppb
2016-11-08	5806-800-0936	4.40 ppb
2016-11-08	5806-801-0915	4.10 ppb
2016-11-08	5806-802-0923	4.90 ppb
2016-11-08	5806-803-0951	5.00 ppb
2017-02-07	5806-800-1037	7.70 ppb
2017-02-07	5806-801-1050	8.30 ppb
2017-02-07	5806-802-1026	7.40 ppb
2017-02-07	5806-803-1020	7.20 ppb
2017-05-02	5806-800-0905	5.30 ppb
2017-05-02	5806-801-0851	7.10 ppb
2017-05-02	5806-802-1230	6.10 ppb
2017-05-02	5806-803-0920	6.60 ppb
2017-08-01	5806-800-1000	1.70 ppb
2017-08-01	5806-801-0940	6.00 ppb
2017-08-01	5806-802-1151	3.00 ppb
2017-08-01	5806-803-1015	6.50 ppb
2017-11-07	5806-800-1000	2.70 ppb
2017-11-07	5806-801-1035	7.00 ppb
2017-11-07	5806-802-1143	6.70 ppb
2017-11-07	5806-803-0940	5.00 ppb
2018-02-06	5806-800-1015	7.00 ppb
2018-02-06	5806-801-1039	6.80 ppb
2018-02-06	5806-802-0941	8.90 ppb
2018-02-06	5806-803-1000	8.50 ppb
2018-05-02	5806-800-0950	6.40 ppb
2018-05-02	5806-801-1025	5.80 ppb
2018-05-02	5806-802-1047	2.90 ppb
2018-05-02	5806-803-0930	5.50 ppb
2018-08-09	5806-800-0800	6.50 ppb
2018-08-09	5806-801-0930	6.90 ppb
2018-08-09	5806-802-1357	9.00 ppb
2018-08-09	5806-803-0815	8.30 ppb
2018-11-06	5806-800-1045	5.10 ppb
2018-11-06	5806-801-0945	5.60 ppb
2018-11-06	5806-802-1221	4.20 ppb
2018-11-06	5806-803-1100	5.80 ppb
2018-11-13	5806-800-1040	4.70 ppb
2018-11-13	5806-801-0940	5.30 ppb
2018-11-13	5806-802-1011	4.70 ppb
2018-11-13	5806-803-1230	5.90 ppb
2019-01-15	5806-800-1015	5.30 ppb
2019-01-15	5806-801-0912	2.80 ppb
2019-01-15	5806-802-0925	2.70 ppb
2019-01-15	5806-803-1000	5.10 ppb
2019-03-05	5806-800-1135	3.40 ppb
2019-03-05	5806-801-1050	4.30 ppb
2019-03-05	5806-802-1230	2.70 ppb
2019-03-12	5806-803-1103	4.30 ppb
2019-04-02	5806-800-1100	5.80 ppb
2019-04-02	5806-801-0940	5.30 ppb
2019-04-02	5806-802-1003	3.70 ppb
2019-04-02	5806-803-1040	5.30 ppb
2019-05-07	5806-800-1045	1.60 ppb
2019-05-07	5806-801-1105	5.80 ppb
2019-05-07	5806-802-1146	5.30 ppb
2019-05-07	5806-803-1005	3.60 ppb
2019-06-04	5806-800-1010	4.40 ppb
2019-06-04	5806-801-1035	5.70 ppb
2019-06-04	5806-802-1128	7.60 ppb
2019-06-04	5806-803-0950	7.90 ppb
2019-06-25	5806-028-0958	ND
2019-07-02	5806-028-1225	ND
2019-07-02	5806-800-0930	3.60 ppb
2019-07-02	5806-801-1015	5.10 ppb
2019-07-02	5806-802-1000	6.10 ppb
2019-07-02	5806-803-0945	6.00 ppb
2019-08-05	5806-800-1258	5.00 ppb
2019-08-05	5806-801-1225	4.90 ppb
2019-08-05	5806-802-1237	4.00 ppb
2019-08-05	5806-803-1315	4.50 ppb
2019-08-06	5806-028-1001	ND
2019-09-03	5806-028-1240	ND
2019-09-17	5806-800-1120	7.50 ppb
2019-09-17	5806-801-0930	7.10 ppb
2019-09-17	5806-802-1008	5.80 ppb
2019-09-17	5806-803-1057	8.70 ppb
2019-10-01	5806-028-1123	ND
2019-10-15	5806-800-1036	ND
2019-10-15	5806-801-1030	ND
2019-10-15	5806-802-1020	ND
2019-10-15	5806-803-1109	ND
2019-11-04	5806-028-1227	ND
2019-11-04	5806-800-1000	ND
2019-11-04	5806-801-0915	ND
2019-11-04	5806-802-1314	ND
2019-11-04	5806-803-1015	ND
2019-12-03	5806-028-1154	ND
2019-12-17	5806-800-1027	ND
2019-12-17	5806-801-0940	ND
2019-12-17	5806-802-1052	ND
2019-12-17	5806-803-1005	ND