Bromoform

City of Inglewood

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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	6.53 ppb	28	25	ND - 13.6 ppb
2015	8.16 ppb	36	31	ND - 13.9 ppb
2016	7.84 ppb	36	32	ND - 17.5 ppb
2017	11.3 ppb	36	33	ND - 18.1 ppb
2018	6.69 ppb	12	8	ND - 10.9 ppb
2019	12.9 ppb	37	33	ND - 25.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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	7.20 ppb
2014-02-10	3761-801-1003	6.90 ppb
2014-02-10	3761-802-0821	5.10 ppb
2014-02-10	3761-803-0718	6.90 ppb
2014-02-10	3761-804-1140	7.50 ppb
2014-02-10	3761-805-0928	5.40 ppb
2014-02-10	3761-807-0810	4.80 ppb
2014-02-13	3761-806-1152	6.50 ppb
2014-03-26	9588-013-1030	ND
2014-03-26	9588-018-1050	ND
2014-05-12	3761-800-1052	7.40 ppb
2014-05-12	3761-801-1001	6.90 ppb
2014-05-12	3761-802-0840	2.40 ppb
2014-05-12	3761-803-0735	6.10 ppb
2014-05-12	3761-804-1216	7.50 ppb
2014-05-12	3761-805-1017	2.90 ppb
2014-05-12	3761-806-1145	5.30 ppb
2014-05-12	3761-807-0823	2.40 ppb
2014-08-11	3761-800-1021	13.1 ppb
2014-08-11	3761-801-0932	13.6 ppb
2014-08-11	3761-802-0812	6.90 ppb
2014-08-11	3761-803-0712	12.9 ppb
2014-08-11	3761-804-1121	12.6 ppb
2014-08-11	3761-805-0900	8.40 ppb
2014-08-11	3761-806-0720	12.2 ppb
2014-08-11	3761-807-0802	8.00 ppb
2014-08-27	9588-002-1120	ND
2014-11-20	3761-806-0921	3.80 ppb
2015-02-09	3761-800-1023	12.0 ppb
2015-02-09	3761-801-0925	11.4 ppb
2015-02-09	3761-802-0827	8.70 ppb
2015-02-09	3761-803-0713	12.0 ppb
2015-02-09	3761-804-1114	12.6 ppb
2015-02-09	3761-805-0914	8.40 ppb
2015-02-09	3761-806-1030	12.6 ppb
2015-02-09	3761-807-0807	12.0 ppb
2015-02-19	9588-013-1048	ND
2015-02-19	9588-018-1108	ND
2015-05-11	3761-800-1022	10.6 ppb
2015-05-11	3761-801-0937	10.1 ppb
2015-05-11	3761-802-0818	4.90 ppb
2015-05-11	3761-803-0711	9.00 ppb
2015-05-11	3761-804-1121	12.2 ppb
2015-05-11	3761-805-0915	3.70 ppb
2015-05-11	3761-806-0713	9.30 ppb
2015-05-11	3761-807-0803	8.20 ppb
2015-05-27	9588-002-1035	ND
2015-08-10	3761-800-1021	10.7 ppb
2015-08-10	3761-801-0935	7.80 ppb
2015-08-10	3761-802-0822	4.60 ppb
2015-08-10	3761-803-0713	12.3 ppb
2015-08-10	3761-804-1115	9.30 ppb
2015-08-10	3761-805-0917	4.20 ppb
2015-08-10	3761-806-0718	ND
2015-08-10	3761-807-0811	4.00 ppb
2015-11-09	3761-800-1015	12.5 ppb
2015-11-09	3761-801-0930	13.9 ppb
2015-11-09	3761-802-0811	6.30 ppb
2015-11-09	3761-803-0711	13.1 ppb
2015-11-09	3761-804-1116	12.9 ppb
2015-11-09	3761-805-0858	5.60 ppb
2015-11-09	3761-806-0717	12.3 ppb
2015-11-09	3761-807-0802	6.50 ppb
2015-12-11	9588-001-1000	ND
2016-02-08	4792-800-1022	11.2 ppb
2016-02-08	4792-801-0925	6.86 ppb
2016-02-08	4792-802-0822	4.95 ppb
2016-02-08	4792-803-0713	12.4 ppb
2016-02-08	4792-804-1125	12.9 ppb
2016-02-08	4792-805-0915	6.20 ppb
2016-02-08	4792-806-0725	2.02 ppb
2016-02-08	4792-807-0820	7.26 ppb
2016-05-09	4792-800-1018	6.26 ppb
2016-05-09	4792-801-0941	17.5 ppb
2016-05-09	4792-802-0816	7.76 ppb
2016-05-09	4792-803-0710	5.75 ppb
2016-05-09	4792-804-1121	6.50 ppb
2016-05-09	4792-805-0910	7.89 ppb
2016-05-09	4792-806-0720	4.44 ppb
2016-05-09	4792-807-0807	5.43 ppb
2016-06-30	9588-018-1110	ND
2016-08-08	4792-800-1000	7.42 ppb
2016-08-08	4792-801-0940	7.46 ppb
2016-08-08	4792-802-0818	7.50 ppb
2016-08-08	4792-803-0711	8.00 ppb
2016-08-08	4792-804-1039	7.80 ppb
2016-08-08	4792-805-0900	8.43 ppb
2016-08-08	4792-806-0725	6.69 ppb
2016-08-08	4792-807-0805	6.84 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	13.7 ppb
2016-11-14	4792-801-0940	12.9 ppb
2016-11-14	4792-802-0812	9.98 ppb
2016-11-14	4792-803-0710	13.1 ppb
2016-11-14	4792-804-1110	14.2 ppb
2016-11-14	4792-805-0915	7.06 ppb
2016-11-14	4792-806-0718	14.5 ppb
2016-11-14	4792-807-0800	11.3 ppb
2017-02-13	4792-800-1024	13.1 ppb
2017-02-13	4792-801-0950	13.2 ppb
2017-02-13	4792-802-0832	14.3 ppb
2017-02-13	4792-803-0715	14.3 ppb
2017-02-13	4792-804-1045	13.8 ppb
2017-02-13	4792-805-0922	7.86 ppb
2017-02-13	4792-806-0728	14.2 ppb
2017-02-13	4792-807-0758	14.1 ppb
2017-02-23	9590-001-1205	ND
2017-05-15	4792-800-1020	14.2 ppb
2017-05-15	4792-801-0943	16.1 ppb
2017-05-15	4792-802-0812	13.8 ppb
2017-05-15	4792-803-0715	15.7 ppb
2017-05-15	4792-804-1110	14.2 ppb
2017-05-15	4792-805-0925	13.4 ppb
2017-05-15	4792-806-0729	13.2 ppb
2017-05-15	4792-807-0750	10.2 ppb
2017-08-23	9590-002-1115	ND
2017-08-23	9590-018-1045	ND
2017-08-24	4792-800-0728	18.1 ppb
2017-08-24	4792-801-0850	13.5 ppb
2017-08-24	4792-802-0755	15.1 ppb
2017-08-24	4792-803-0735	16.0 ppb
2017-08-24	4792-804-0915	15.1 ppb
2017-08-24	4792-805-0830	16.6 ppb
2017-08-24	4792-806-0710	10.00 ppb
2017-08-24	4792-807-0815	18.1 ppb
2017-09-05	4792-800-1135	12.8 ppb
2017-11-13	4792-800-1020	8.72 ppb
2017-11-13	4792-801-1050	8.25 ppb
2017-11-13	4792-802-0831	5.48 ppb
2017-11-13	4792-803-0715	8.26 ppb
2017-11-13	4792-804-1130	8.60 ppb
2017-11-13	4792-805-0920	5.30 ppb
2017-11-13	4792-806-0734	6.91 ppb
2017-11-13	4792-807-0810	4.92 ppb
2018-02-12	4792-800-1028	9.88 ppb
2018-02-12	4792-801-1000	10.7 ppb
2018-02-12	4792-802-0835	8.62 ppb
2018-02-12	4792-803-0715	9.50 ppb
2018-02-12	4792-804-1116	10.1 ppb
2018-02-12	4792-805-0915	10.9 ppb
2018-02-12	4792-806-0735	10.8 ppb
2018-02-12	4792-807-0803	9.83 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	8.40 ppb
2019-02-11	9588-801-0959	6.50 ppb
2019-02-11	9588-802-0850	2.90 ppb
2019-02-11	9588-803-0710	9.90 ppb
2019-02-11	9588-804-1100	9.30 ppb
2019-02-11	9588-805-0916	2.90 ppb
2019-02-11	9588-806-0725	9.20 ppb
2019-02-11	9588-807-0725	9.20 ppb
2019-02-11	9588-807-0828	3.40 ppb
2019-05-13	9588-800-1055	11.0 ppb
2019-05-13	9588-801-1041	12.0 ppb
2019-05-13	9588-802-1015	6.30 ppb
2019-05-13	9588-803-1016	16.0 ppb
2019-05-13	9588-804-1102	15.0 ppb
2019-05-13	9588-805-1028	4.80 ppb
2019-05-13	9588-806-0750	13.0 ppb
2019-05-13	9588-807-0900	4.60 ppb
2019-08-12	9588-800-1130	25.0 ppb
2019-08-12	9588-801-1114	21.0 ppb
2019-08-12	9588-802-1046	17.0 ppb
2019-08-12	9588-803-1003	25.0 ppb
2019-08-12	9588-804-1136	25.0 ppb
2019-08-12	9588-805-1059	21.0 ppb
2019-08-12	9588-806-1018	20.0 ppb
2019-08-12	9588-807-1031	19.0 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	21.0 ppb
2019-11-12	9588-801-0931	24.0 ppb
2019-11-12	9588-802-0746	17.0 ppb
2019-11-12	9588-803-0653	22.0 ppb
2019-11-12	9588-804-1011	23.0 ppb
2019-11-12	9588-805-0908	18.0 ppb
2019-11-12	9588-806-0712	20.0 ppb
2019-11-12	9588-807-0831	16.0 ppb
2019-11-18	9588-001-1125	ND