Dibromoacetic acid

Otay Water 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

196

Samples

Samples exceeding legal limit (MCL)

167

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	1.75 ppb	32	27	ND - 4.00 ppb
2015	1.04 ppb	32	22	ND - 2.40 ppb
2016	1.59 ppb	32	27	ND - 4.00 ppb
2017	3.06 ppb	32	27	ND - 6.60 ppb
2018	2.49 ppb	32	32	1.40 ppb - 4.70 ppb
2019	2.27 ppb	36	32	ND - 6.10 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
2014-02-10	9590-900-0700	1.80 ppb
2014-02-10	9590-901-0940	1.40 ppb
2014-02-10	9590-902-0740	1.50 ppb
2014-02-10	9590-903-1400	ND
2014-02-10	9590-904-1240	ND
2014-02-10	9590-905-1505	ND
2014-02-10	9590-906-1435	ND
2014-02-10	9590-907-1215	ND
2014-05-13	9590-900-0640	1.90 ppb
2014-05-13	9590-901-0745	2.20 ppb
2014-05-13	9590-902-0710	1.40 ppb
2014-05-13	9590-903-1145	1.40 ppb
2014-05-13	9590-904-1030	1.40 ppb
2014-05-13	9590-905-1315	1.20 ppb
2014-05-13	9590-906-1230	1.40 ppb
2014-05-13	9590-907-0900	1.20 ppb
2014-08-12	9590-900-0710	3.20 ppb
2014-08-12	9590-901-0630	1.80 ppb
2014-08-12	9590-902-0740	3.90 ppb
2014-08-12	9590-903-1120	4.00 ppb
2014-08-12	9590-904-1030	3.60 ppb
2014-08-12	9590-905-1315	3.60 ppb
2014-08-12	9590-906-1220	3.60 ppb
2014-08-12	9590-907-0910	3.20 ppb
2014-11-12	9590-900-0930	1.50 ppb
2014-11-12	9590-901-0700	1.20 ppb
2014-11-12	9590-902-0830	2.80 ppb
2014-11-12	9590-903-1200	1.40 ppb
2014-11-12	9590-904-1400	1.30 ppb
2014-11-12	9590-905-1310	1.20 ppb
2014-11-12	9590-906-1240	1.60 ppb
2014-11-12	9590-907-1430	1.30 ppb
2015-02-09	9590-900-0830	1.80 ppb
2015-02-09	9590-901-0950	1.90 ppb
2015-02-09	9590-902-0910	1.80 ppb
2015-02-09	9590-903-1315	1.20 ppb
2015-02-09	9590-904-1145	1.10 ppb
2015-02-09	9590-905-1450	ND
2015-02-09	9590-906-1400	ND
2015-02-09	9590-907-1115	ND
2015-05-13	9590-900-0700	1.60 ppb
2015-05-13	9590-901-0830	1.60 ppb
2015-05-13	9590-902-0745	2.40 ppb
2015-05-13	9590-903-1100	1.30 ppb
2015-05-13	9590-904-1310	1.30 ppb
2015-05-13	9590-905-1200	1.20 ppb
2015-05-13	9590-906-1130	1.30 ppb
2015-05-13	9590-907-1340	1.30 ppb
2015-08-11	9590-900-0700	1.50 ppb
2015-08-11	9590-901-0800	ND
2015-08-11	9590-902-0730	2.00 ppb
2015-08-11	9590-903-1140	2.40 ppb
2015-08-11	9590-904-1050	1.20 ppb
2015-08-11	9590-905-1350	1.20 ppb
2015-08-11	9590-906-1235	1.20 ppb
2015-08-11	9590-907-0930	1.20 ppb
2015-11-09	9590-900-1410	ND
2015-11-09	9590-901-1500	ND
2015-11-09	9590-902-1440	1.60 ppb
2015-11-09	9590-903-1120	ND
2015-11-09	9590-904-1025	1.10 ppb
2015-11-09	9590-905-1250	ND
2015-11-09	9590-906-1210	ND
2015-11-09	9590-907-0845	ND
2016-02-09	9590-900-1350	3.20 ppb
2016-02-09	9590-901-1530	2.40 ppb
2016-02-09	9590-902-1430	2.10 ppb
2016-02-09	9590-903-1050	ND
2016-02-09	9590-904-0940	ND
2016-02-09	9590-905-1200	ND
2016-02-09	9590-906-1130	ND
2016-02-09	9590-907-1300	ND
2016-05-10	9590-900-1200	1.50 ppb
2016-05-10	9590-901-1310	1.70 ppb
2016-05-10	9590-902-1235	3.00 ppb
2016-05-10	9590-903-0900	1.50 ppb
2016-05-10	9590-904-0930	1.000 ppb
2016-05-10	9590-905-1000	1.000 ppb
2016-05-10	9590-906-1030	1.20 ppb
2016-05-10	9590-907-1100	1.30 ppb
2016-08-09	9590-900-0825	2.20 ppb
2016-08-09	9590-901-0900	2.00 ppb
2016-08-09	9590-902-0630	2.00 ppb
2016-08-09	9590-903-1145	4.00 ppb
2016-08-09	9590-904-1040	2.40 ppb
2016-08-09	9590-905-1320	2.90 ppb
2016-08-09	9590-906-1220	2.20 ppb
2016-08-09	9590-907-1010	2.20 ppb
2016-11-14	9590-900-1000	1.20 ppb
2016-11-14	9590-901-0925	1.50 ppb
2016-11-14	9590-902-0750	1.70 ppb
2016-11-14	9590-903-1150	1.40 ppb
2016-11-14	9590-904-1125	1.20 ppb
2016-11-14	9590-905-1245	1.20 ppb
2016-11-14	9590-906-1220	1.40 ppb
2016-11-14	9590-907-1100	1.40 ppb
2017-02-14	9590-900-1210	2.70 ppb
2017-02-14	9590-901-1330	3.60 ppb
2017-02-14	9590-902-1300	4.50 ppb
2017-02-14	9590-903-1010	ND
2017-02-14	9590-904-0855	ND
2017-02-14	9590-905-1120	ND
2017-02-14	9590-906-1045	ND
2017-02-14	9590-907-0830	ND
2017-05-31	9590-900-0900	1.60 ppb
2017-05-31	9590-901-1000	4.10 ppb
2017-05-31	9590-902-0930	3.40 ppb
2017-05-31	9590-903-1310	6.60 ppb
2017-05-31	9590-904-1130	2.00 ppb
2017-05-31	9590-905-1400	2.70 ppb
2017-05-31	9590-906-1340	2.30 ppb
2017-05-31	9590-907-1420	2.20 ppb
2017-08-14	9590-900-1330	4.00 ppb
2017-08-14	9590-901-1400	3.70 ppb
2017-08-14	9590-902-0900	2.90 ppb
2017-08-14	9590-903-1130	4.00 ppb
2017-08-14	9590-904-1030	3.70 ppb
2017-08-14	9590-905-1230	3.60 ppb
2017-08-14	9590-906-1200	3.30 ppb
2017-08-14	9590-907-1000	3.70 ppb
2017-11-13	9590-900-1300	4.20 ppb
2017-11-13	9590-901-1400	4.60 ppb
2017-11-13	9590-902-1330	5.30 ppb
2017-11-13	9590-903-1110	3.90 ppb
2017-11-13	9590-904-1015	3.30 ppb
2017-11-13	9590-905-1215	4.00 ppb
2017-11-13	9590-906-1130	4.00 ppb
2017-11-13	9590-907-0950	4.00 ppb
2018-02-12	9590-900-1230	4.10 ppb
2018-02-12	9590-901-1350	4.30 ppb
2018-02-12	9590-902-1320	4.10 ppb
2018-02-12	9590-903-1030	2.30 ppb
2018-02-12	9590-904-0925	2.40 ppb
2018-02-12	9590-905-1120	2.80 ppb
2018-02-12	9590-906-1100	2.50 ppb
2018-02-12	9590-907-0900	2.90 ppb
2018-05-14	9590-900-1330	1.50 ppb
2018-05-14	9590-901-0900	2.00 ppb
2018-05-14	9590-902-0820	4.70 ppb
2018-05-14	9590-903-1125	1.60 ppb
2018-05-14	9590-904-1030	1.40 ppb
2018-05-14	9590-905-1230	1.60 ppb
2018-05-14	9590-906-1200	1.40 ppb
2018-05-14	9590-907-1000	1.60 ppb
2018-08-13	9590-900-1230	2.00 ppb
2018-08-13	9590-901-1330	2.30 ppb
2018-08-13	9590-902-1300	2.90 ppb
2018-08-13	9590-903-1000	3.60 ppb
2018-08-13	9590-904-0900	2.10 ppb
2018-08-13	9590-905-1100	2.10 ppb
2018-08-13	9590-906-1030	2.50 ppb
2018-08-13	9590-907-0830	2.20 ppb
2018-11-13	9590-900-1340	2.80 ppb
2018-11-13	9590-901-1435	3.30 ppb
2018-11-13	9590-902-1410	2.60 ppb
2018-11-13	9590-903-1100	2.50 ppb
2018-11-13	9590-904-0900	2.10 ppb
2018-11-13	9590-905-1215	1.70 ppb
2018-11-13	9590-906-1130	1.90 ppb
2018-11-13	9590-907-0830	2.00 ppb
2019-02-12	9590-900-0815	1.90 ppb
2019-02-12	9590-901-0940	2.50 ppb
2019-02-12	9590-902-0845	2.60 ppb
2019-02-12	9590-903-1120	1.40 ppb
2019-02-12	9590-904-1320	ND
2019-02-12	9590-905-1220	1.000 ppb
2019-02-12	9590-906-1155	1.20 ppb
2019-02-12	9590-907-1345	1.000 ppb
2019-05-15	9590-003-1010	ND
2019-05-15	9590-005-1300	4.60 ppb
2019-05-15	9590-900-1240	6.10 ppb
2019-05-15	9590-901-1140	4.60 ppb
2019-05-15	9590-902-1210	5.20 ppb
2019-05-15	9590-903-0840	4.20 ppb
2019-05-15	9590-904-1040	1.20 ppb
2019-05-15	9590-905-0940	ND
2019-05-15	9590-906-0910	1.80 ppb
2019-05-15	9590-907-1100	1.60 ppb
2019-08-12	4790-900-0805	4.10 ppb
2019-08-12	4790-901-0905	2.60 ppb
2019-08-12	4790-902-0835	4.20 ppb
2019-08-12	4790-903-1050	3.40 ppb
2019-08-12	4790-904-1330	2.20 ppb
2019-08-12	4790-905-1215	1.90 ppb
2019-08-12	4790-906-1145	2.10 ppb
2019-08-12	4790-907-1015	2.20 ppb
2019-11-12	4790-003-1245	ND
2019-11-12	4790-005-0945	1.80 ppb
2019-11-12	4790-900-0810	3.00 ppb
2019-11-12	4790-901-0915	3.30 ppb
2019-11-12	4790-902-0840	3.70 ppb
2019-11-12	4790-903-1100	1.60 ppb
2019-11-12	4790-904-1315	1.10 ppb
2019-11-12	4790-905-1215	1.000 ppb
2019-11-12	4790-906-1145	1.20 ppb
2019-11-12	4790-907-1030	1.30 ppb