Bromodichloromethane

City of Inglewood

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

185

Samples

Samples exceeding legal limit (MCL)

162

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	12.1 ppb	28	25	ND - 19.4 ppb
2015	10.0 ppb	36	31	ND - 19.0 ppb
2016	12.5 ppb	36	32	ND - 28.5 ppb
2017	13.0 ppb	36	33	ND - 25.5 ppb
2018	9.13 ppb	12	8	ND - 18.3 ppb
2019	8.35 ppb	37	33	ND - 14.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-02-10	3761-800-1035	14.2 ppb
2014-02-10	3761-801-1003	13.4 ppb
2014-02-10	3761-802-0821	10.7 ppb
2014-02-10	3761-803-0718	12.8 ppb
2014-02-10	3761-804-1140	13.7 ppb
2014-02-10	3761-805-0928	12.1 ppb
2014-02-10	3761-807-0810	10.00 ppb
2014-02-13	3761-806-1152	13.0 ppb
2014-03-26	9588-013-1030	ND
2014-03-26	9588-018-1050	ND
2014-05-12	3761-800-1052	12.9 ppb
2014-05-12	3761-801-1001	12.2 ppb
2014-05-12	3761-802-0840	10.2 ppb
2014-05-12	3761-803-0735	11.2 ppb
2014-05-12	3761-804-1216	12.6 ppb
2014-05-12	3761-805-1017	9.70 ppb
2014-05-12	3761-806-1145	12.8 ppb
2014-05-12	3761-807-0823	11.2 ppb
2014-08-11	3761-800-1021	17.8 ppb
2014-08-11	3761-801-0932	19.4 ppb
2014-08-11	3761-802-0812	15.7 ppb
2014-08-11	3761-803-0712	18.1 ppb
2014-08-11	3761-804-1121	18.1 ppb
2014-08-11	3761-805-0900	15.5 ppb
2014-08-11	3761-806-0720	16.4 ppb
2014-08-11	3761-807-0802	15.8 ppb
2014-08-27	9588-002-1120	ND
2014-11-20	3761-806-0921	9.30 ppb
2015-02-09	3761-800-1023	7.20 ppb
2015-02-09	3761-801-0925	6.60 ppb
2015-02-09	3761-802-0827	5.30 ppb
2015-02-09	3761-803-0713	7.40 ppb
2015-02-09	3761-804-1114	7.30 ppb
2015-02-09	3761-805-0914	5.00 ppb
2015-02-09	3761-806-1030	8.80 ppb
2015-02-09	3761-807-0807	6.60 ppb
2015-02-19	9588-013-1048	ND
2015-02-19	9588-018-1108	ND
2015-05-11	3761-800-1022	18.1 ppb
2015-05-11	3761-801-0937	18.0 ppb
2015-05-11	3761-802-0818	14.2 ppb
2015-05-11	3761-803-0711	16.2 ppb
2015-05-11	3761-804-1121	18.6 ppb
2015-05-11	3761-805-0915	14.7 ppb
2015-05-11	3761-806-0713	19.0 ppb
2015-05-11	3761-807-0803	16.9 ppb
2015-05-27	9588-002-1035	ND
2015-08-10	3761-800-1021	14.7 ppb
2015-08-10	3761-801-0935	13.7 ppb
2015-08-10	3761-802-0822	11.9 ppb
2015-08-10	3761-803-0713	15.2 ppb
2015-08-10	3761-804-1115	13.9 ppb
2015-08-10	3761-805-0917	11.4 ppb
2015-08-10	3761-806-0718	ND
2015-08-10	3761-807-0811	11.1 ppb
2015-11-09	3761-800-1015	10.1 ppb
2015-11-09	3761-801-0930	10.6 ppb
2015-11-09	3761-802-0811	10.2 ppb
2015-11-09	3761-803-0711	9.70 ppb
2015-11-09	3761-804-1116	9.90 ppb
2015-11-09	3761-805-0858	9.70 ppb
2015-11-09	3761-806-0717	9.30 ppb
2015-11-09	3761-807-0802	10.4 ppb
2015-12-11	9588-001-1000	ND
2016-02-08	4792-800-1022	19.2 ppb
2016-02-08	4792-801-0925	12.8 ppb
2016-02-08	4792-802-0822	10.1 ppb
2016-02-08	4792-803-0713	19.8 ppb
2016-02-08	4792-804-1125	21.0 ppb
2016-02-08	4792-805-0915	12.6 ppb
2016-02-08	4792-806-0725	4.20 ppb
2016-02-08	4792-807-0820	13.5 ppb
2016-05-09	4792-800-1018	11.2 ppb
2016-05-09	4792-801-0941	28.5 ppb
2016-05-09	4792-802-0816	13.3 ppb
2016-05-09	4792-803-0710	11.0 ppb
2016-05-09	4792-804-1121	11.6 ppb
2016-05-09	4792-805-0910	14.2 ppb
2016-05-09	4792-806-0720	8.60 ppb
2016-05-09	4792-807-0807	10.1 ppb
2016-06-30	9588-018-1110	ND
2016-08-08	4792-800-1000	15.0 ppb
2016-08-08	4792-801-0940	13.7 ppb
2016-08-08	4792-802-0818	13.7 ppb
2016-08-08	4792-803-0711	13.7 ppb
2016-08-08	4792-804-1039	14.2 ppb
2016-08-08	4792-805-0900	17.0 ppb
2016-08-08	4792-806-0725	12.9 ppb
2016-08-08	4792-807-0805	12.5 ppb
2016-09-28	9588-002-1000	ND
2016-09-28	9588-013-0940	ND
2016-11-10	9588-001-1030	ND
2016-11-14	4792-800-1029	15.9 ppb
2016-11-14	4792-801-0940	16.4 ppb
2016-11-14	4792-802-0812	12.1 ppb
2016-11-14	4792-803-0710	15.9 ppb
2016-11-14	4792-804-1110	17.6 ppb
2016-11-14	4792-805-0915	14.6 ppb
2016-11-14	4792-806-0718	11.7 ppb
2016-11-14	4792-807-0800	11.7 ppb
2017-02-13	4792-800-1024	17.5 ppb
2017-02-13	4792-801-0950	16.9 ppb
2017-02-13	4792-802-0832	15.9 ppb
2017-02-13	4792-803-0715	15.9 ppb
2017-02-13	4792-804-1045	17.5 ppb
2017-02-13	4792-805-0922	25.5 ppb
2017-02-13	4792-806-0728	10.9 ppb
2017-02-13	4792-807-0758	19.5 ppb
2017-02-23	9590-001-1205	ND
2017-05-15	4792-800-1020	20.3 ppb
2017-05-15	4792-801-0943	22.0 ppb
2017-05-15	4792-802-0812	2.43 ppb
2017-05-15	4792-803-0715	13.3 ppb
2017-05-15	4792-804-1110	24.2 ppb
2017-05-15	4792-805-0925	2.38 ppb
2017-05-15	4792-806-0729	2.42 ppb
2017-05-15	4792-807-0750	2.12 ppb
2017-08-23	9590-002-1115	ND
2017-08-23	9590-018-1045	ND
2017-08-24	4792-800-0728	22.1 ppb
2017-08-24	4792-801-0850	10.9 ppb
2017-08-24	4792-802-0755	16.3 ppb
2017-08-24	4792-803-0735	24.8 ppb
2017-08-24	4792-804-0915	14.3 ppb
2017-08-24	4792-805-0830	21.5 ppb
2017-08-24	4792-806-0710	12.2 ppb
2017-08-24	4792-807-0815	23.5 ppb
2017-09-05	4792-800-1135	17.3 ppb
2017-11-13	4792-800-1020	12.4 ppb
2017-11-13	4792-801-1050	13.4 ppb
2017-11-13	4792-802-0831	3.72 ppb
2017-11-13	4792-803-0715	13.8 ppb
2017-11-13	4792-804-1130	14.7 ppb
2017-11-13	4792-805-0920	3.62 ppb
2017-11-13	4792-806-0734	9.69 ppb
2017-11-13	4792-807-0810	3.85 ppb
2018-02-12	4792-800-1028	17.2 ppb
2018-02-12	4792-801-1000	18.3 ppb
2018-02-12	4792-802-0835	6.63 ppb
2018-02-12	4792-803-0715	16.8 ppb
2018-02-12	4792-804-1116	17.3 ppb
2018-02-12	4792-805-0915	7.80 ppb
2018-02-12	4792-806-0735	18.1 ppb
2018-02-12	4792-807-0803	7.44 ppb
2018-02-14	9588-001-0955	ND
2018-08-23	9588-002-1000	ND
2018-08-23	9588-018-0940	ND
2018-12-13	9588-013-0945	ND
2019-02-11	9588-800-1029	13.0 ppb
2019-02-11	9588-801-0959	12.0 ppb
2019-02-11	9588-802-0850	7.80 ppb
2019-02-11	9588-803-0710	14.0 ppb
2019-02-11	9588-804-1100	13.0 ppb
2019-02-11	9588-805-0916	7.60 ppb
2019-02-11	9588-806-0725	14.0 ppb
2019-02-11	9588-807-0725	14.0 ppb
2019-02-11	9588-807-0828	7.90 ppb
2019-05-13	9588-800-1055	9.90 ppb
2019-05-13	9588-801-1041	8.90 ppb
2019-05-13	9588-802-1015	4.10 ppb
2019-05-13	9588-803-1016	12.0 ppb
2019-05-13	9588-804-1102	11.0 ppb
2019-05-13	9588-805-1028	9.40 ppb
2019-05-13	9588-806-0750	8.90 ppb
2019-05-13	9588-807-0900	6.80 ppb
2019-08-12	9588-800-1130	6.00 ppb
2019-08-12	9588-801-1114	5.40 ppb
2019-08-12	9588-802-1046	4.30 ppb
2019-08-12	9588-803-1003	5.90 ppb
2019-08-12	9588-804-1136	5.80 ppb
2019-08-12	9588-805-1059	4.70 ppb
2019-08-12	9588-806-1018	5.30 ppb
2019-08-12	9588-807-1031	4.40 ppb
2019-08-19	9588-002-1150	ND
2019-08-19	9588-018-1130	ND
2019-08-26	9588-001-0000	ND
2019-11-12	9588-800-0953	12.0 ppb
2019-11-12	9588-801-0931	12.0 ppb
2019-11-12	9588-802-0746	11.0 ppb
2019-11-12	9588-803-0653	12.0 ppb
2019-11-12	9588-804-1011	12.0 ppb
2019-11-12	9588-805-0908	12.0 ppb
2019-11-12	9588-806-0712	11.0 ppb
2019-11-12	9588-807-0831	11.0 ppb
2019-11-18	9588-001-1125	ND