Dibromochloromethane

Antelope Valley - East Kern Water Agency

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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)

117

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	14.1 ppb	22	20	ND - 33.0 ppb
2015	13.1 ppb	20	18	ND - 29.0 ppb
2016	18.3 ppb	21	20	ND - 38.0 ppb
2017	9.92 ppb	21	20	ND - 19.0 ppb
2018	9.27 ppb	27	19	ND - 32.0 ppb
2019	13.3 ppb	24	20	ND - 35.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-02-20	9588-800-0635	15.0 ppb
2014-02-20	9588-801-1205	13.0 ppb
2014-02-20	9588-802-0830	1.20 ppb
2014-02-20	9588-803-0852	5.60 ppb
2014-02-20	9588-804-1140	8.50 ppb
2014-05-15	9588-800-0625	12.0 ppb
2014-05-15	9588-801-0910	4.40 ppb
2014-05-15	9588-802-0840	3.60 ppb
2014-05-15	9588-803-0900	6.40 ppb
2014-05-15	9588-804-0830	3.70 ppb
2014-08-21	9588-800-0640	29.0 ppb
2014-08-21	9588-801-0815	33.0 ppb
2014-08-21	9588-802-0900	19.0 ppb
2014-08-21	9588-803-0920	32.0 ppb
2014-08-21	9588-804-0915	25.0 ppb
2014-09-10	9588-015-1016	ND
2014-11-20	9588-800-0635	28.0 ppb
2014-11-20	9588-801-0831	15.0 ppb
2014-11-20	9588-802-0900	13.0 ppb
2014-11-20	9588-803-0841	31.0 ppb
2014-11-20	9588-804-0745	12.0 ppb
2014-12-03	9588-015-0954	ND
2015-02-19	9590-800-0645	4.20 ppb
2015-02-19	9590-801-0925	8.20 ppb
2015-02-19	9590-802-0830	ND
2015-02-19	9590-803-0855	1.90 ppb
2015-02-19	9590-804-0845	7.00 ppb
2015-05-13	9590-015-1040	ND
2015-05-21	9590-800-1110	29.0 ppb
2015-05-21	9590-801-1015	24.0 ppb
2015-05-21	9590-802-0940	9.40 ppb
2015-05-21	9590-804-0913	26.0 ppb
2015-08-20	9590-800-0612	16.0 ppb
2015-08-20	9590-801-0910	22.0 ppb
2015-08-20	9590-802-0850	21.0 ppb
2015-08-20	9590-803-0914	29.0 ppb
2015-08-20	9590-804-0827	17.0 ppb
2015-11-19	9590-800-0635	10.00 ppb
2015-11-19	9590-801-0858	15.0 ppb
2015-11-19	9590-802-0728	6.30 ppb
2015-11-19	9590-804-0804	8.30 ppb
2015-12-10	9590-803-0940	7.20 ppb
2016-02-18	9590-800-0604	3.00 ppb
2016-02-18	9590-801-0932	14.0 ppb
2016-02-18	9590-802-0902	4.30 ppb
2016-02-18	9590-803-0933	5.00 ppb
2016-02-18	9590-804-0737	9.30 ppb
2016-05-11	9590-015-1215	ND
2016-05-26	9590-800-0635	33.0 ppb
2016-05-26	9590-801-0811	37.0 ppb
2016-05-26	9590-802-0815	28.0 ppb
2016-05-26	9590-803-0845	38.0 ppb
2016-05-26	9590-804-0725	36.0 ppb
2016-08-18	9590-800-0634	23.0 ppb
2016-08-18	9590-801-0851	19.0 ppb
2016-08-18	9590-802-0835	11.0 ppb
2016-08-18	9590-803-0812	17.0 ppb
2016-08-18	9590-804-0805	11.0 ppb
2016-11-17	9590-800-0610	19.0 ppb
2016-11-17	9590-801-0830	25.0 ppb
2016-11-17	9590-802-0935	14.0 ppb
2016-11-17	9590-803-1000	19.0 ppb
2016-11-17	9590-804-0655	18.0 ppb
2017-02-21	9590-800-1305	19.0 ppb
2017-02-24	9590-801-0944	6.80 ppb
2017-02-24	9590-802-0840	10.00 ppb
2017-02-24	9590-803-0910	16.0 ppb
2017-02-24	9590-804-0755	10.00 ppb
2017-05-10	9590-015-1116	ND
2017-05-18	9590-800-0847	17.0 ppb
2017-05-18	9590-801-0940	3.80 ppb
2017-05-18	9590-802-0707	5.40 ppb
2017-05-18	9590-803-0731	7.50 ppb
2017-05-18	9590-804-0835	2.80 ppb
2017-08-17	9590-800-0945	12.0 ppb
2017-08-17	9590-801-0925	8.80 ppb
2017-08-17	9590-802-0805	5.20 ppb
2017-08-17	9590-803-0835	8.80 ppb
2017-08-17	9590-804-1005	7.30 ppb
2017-11-16	9590-800-0935	14.0 ppb
2017-11-16	9590-801-0830	15.0 ppb
2017-11-16	9590-802-0800	10.00 ppb
2017-11-16	9590-803-0835	14.0 ppb
2017-11-16	9590-804-1000	15.0 ppb
2018-02-15	9590-800-0915	14.0 ppb
2018-02-15	9590-801-0855	32.0 ppb
2018-02-15	9590-802-0730	ND
2018-02-15	9590-803-0814	1.40 ppb
2018-02-15	9590-804-0700	32.0 ppb
2018-02-28	9590-019-0928	ND
2018-03-14	9590-020-0640	ND
2018-03-21	9590-023-0830	ND
2018-05-17	9590-800-0914	10.00 ppb
2018-05-17	9590-801-0856	12.0 ppb
2018-05-17	9590-802-0800	10.00 ppb
2018-05-17	9590-803-0820	14.0 ppb
2018-05-17	9590-804-0809	10.00 ppb
2018-05-23	9590-019-0947	ND
2018-06-20	9590-023-1023	ND
2018-06-20	9590-024-0811	ND
2018-08-08	9590-019-1055	ND
2018-08-16	9590-800-0915	8.20 ppb
2018-08-16	9590-801-0846	20.0 ppb
2018-08-16	9590-802-0745	10.00 ppb
2018-08-16	9590-803-0810	14.0 ppb
2018-08-16	9590-804-0930	12.0 ppb
2018-11-15	9590-800-0945	11.0 ppb
2018-11-15	9590-801-1010	7.70 ppb
2018-11-15	9590-802-0735	8.00 ppb
2018-11-15	9590-803-0805	11.0 ppb
2018-11-15	9590-804-0915	13.0 ppb
2019-02-13	9590-017-1033	ND
2019-02-13	9590-018-1122	ND
2019-02-21	9590-800-0940	11.0 ppb
2019-02-21	9590-801-0757	22.0 ppb
2019-02-21	9590-802-0805	17.0 ppb
2019-02-21	9590-803-0837	1.90 ppb
2019-02-21	9590-804-0948	15.0 ppb
2019-03-13	9590-020-0903	ND
2019-05-16	9590-800-0925	16.0 ppb
2019-05-16	9590-801-0711	30.0 ppb
2019-05-16	9590-802-0745	13.0 ppb
2019-05-16	9590-803-0820	19.0 ppb
2019-05-16	9590-804-0715	23.0 ppb
2019-08-14	9590-019-1045	ND
2019-08-15	9590-800-1000	17.0 ppb
2019-08-15	9590-801-1100	12.0 ppb
2019-08-15	9590-802-0910	8.70 ppb
2019-08-15	9590-803-0843	13.0 ppb
2019-09-10	9590-804-0930	8.10 ppb
2019-11-21	9590-800-0945	12.0 ppb
2019-11-21	9590-801-1144	35.0 ppb
2019-11-21	9590-802-0747	12.0 ppb
2019-11-21	9590-803-0825	21.0 ppb
2019-11-21	9590-804-0934	13.0 ppb