Bromodichloromethane

Redlands City

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

266

Samples

Samples exceeding legal limit (MCL)

156

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	1.85 ppb	50	16	ND - 18.0 ppb
2015	5.03 ppb	39	22	ND - 27.0 ppb
2016	9.25 ppb	46	36	ND - 30.0 ppb
2017	4.27 ppb	36	22	ND - 18.0 ppb
2018	3.77 ppb	34	27	ND - 17.0 ppb
2019	2.26 ppb	61	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
2014-02-04	9590-601-1040	1.10 ppb
2014-02-04	9590-602-1000	ND
2014-02-04	9590-603-0820	2.60 ppb
2014-02-04	9590-604-1020	2.20 ppb
2014-02-04	9590-605-0840	2.10 ppb
2014-02-04	9590-606-0935	ND
2014-02-04	9590-607-0910	ND
2014-02-04	9590-608-1110	ND
2014-03-06	9590-031-0935	ND
2014-05-08	9590-601-1030	3.10 ppb
2014-05-08	9590-602-0935	9.60 ppb
2014-05-08	9590-603-0950	4.90 ppb
2014-05-08	9590-604-1015	3.50 ppb
2014-05-08	9590-605-0900	5.70 ppb
2014-05-08	9590-606-1055	ND
2014-05-08	9590-607-0920	ND
2014-05-08	9590-608-1035	ND
2014-05-22	4790-003-1030	ND
2014-05-22	9590-010-0930	ND
2014-05-22	4790-017-0930	ND
2014-05-22	4790-021-1005	ND
2014-05-22	4790-069-1040	ND
2014-06-12	9590-062-1010	ND
2014-07-03	9590-029-0920	ND
2014-07-03	9590-053-1020	ND
2014-07-24	9590-019-1055	ND
2014-08-07	9590-002-1030	ND
2014-08-07	9590-054-0840	ND
2014-08-07	9590-070-1250	ND
2014-08-14	9590-601-1040	1.20 ppb
2014-08-14	9590-602-1010	11.0 ppb
2014-08-14	9590-603-0945	12.0 ppb
2014-08-14	9590-604-1020	9.60 ppb
2014-08-14	9590-605-0910	18.0 ppb
2014-08-14	9590-606-1100	ND
2014-08-14	9590-607-0925	ND
2014-08-14	9590-608-0835	ND
2014-10-02	9590-008-1000	ND
2014-10-02	9590-060-0840	ND
2014-10-30	9590-005-1105	ND
2014-11-25	9590-005-1025	ND
2014-12-04	9590-601-1045	ND
2014-12-04	9590-602-0925	ND
2014-12-04	9590-603-0950	3.10 ppb
2014-12-04	9590-604-1020	2.90 ppb
2014-12-04	9590-605-0900	ND
2014-12-04	9590-606-0910	ND
2014-12-04	9590-607-0910	ND
2014-12-04	9590-608-0830	ND
2014-12-16	9590-055-1115	ND
2015-01-08	9590-022-0945	ND
2015-01-08	9590-025-1850	ND
2015-02-12	9590-601-0955	4.80 ppb
2015-02-12	9590-602-0900	5.90 ppb
2015-02-12	9590-603-0920	3.00 ppb
2015-02-12	9590-604-0840	2.90 ppb
2015-02-12	9590-605-0830	2.00 ppb
2015-02-12	9590-606-1045	ND
2015-02-12	9590-607-0840	ND
2015-02-12	9590-608-1015	ND
2015-03-12	9590-005-0900	ND
2015-05-14	9590-601-0945	5.90 ppb
2015-05-14	9590-602-0930	5.40 ppb
2015-05-14	9590-603-0905	3.50 ppb
2015-05-14	9590-604-0930	2.00 ppb
2015-05-14	9590-605-0845	1.80 ppb
2015-05-14	9590-606-1040	ND
2015-05-14	9590-607-0900	ND
2015-05-14	9590-608-1040	ND
2015-05-21	9590-026-1120	ND
2015-06-04	9590-005-0905	ND
2015-08-11	9590-601-0900	12.0 ppb
2015-08-11	9590-602-0750	26.0 ppb
2015-08-11	9590-603-0815	21.0 ppb
2015-08-11	9590-604-0940	24.0 ppb
2015-08-11	9590-605-0840	27.0 ppb
2015-08-11	9590-606-1100	ND
2015-08-11	9590-607-1215	ND
2015-08-11	9590-608-1230	ND
2015-08-25	9590-607-1010	ND
2015-10-08	9590-005-0900	ND
2015-11-12	9590-601-0945	8.80 ppb
2015-11-12	9590-602-0915	9.80 ppb
2015-11-12	9590-603-0810	4.30 ppb
2015-11-12	9590-604-0825	2.30 ppb
2015-11-12	9590-605-0900	1.70 ppb
2015-11-12	9590-606-0850	ND
2015-11-12	9590-607-1000	2.20 ppb
2015-11-12	9590-608-1020	20.0 ppb
2016-02-11	9590-601-1030	11.0 ppb
2016-02-11	9590-602-0845	1.40 ppb
2016-02-11	9590-603-0945	2.00 ppb
2016-02-11	9590-604-1015	ND
2016-02-11	9590-605-0900	ND
2016-02-11	9590-606-0805	ND
2016-02-11	9590-607-0825	ND
2016-02-11	9590-608-1015	ND
2016-03-03	9590-601-0930	5.00 ppb
2016-04-18	9590-602-1005	5.60 ppb
2016-04-18	9590-603-1020	7.00 ppb
2016-04-18	9590-604-1040	14.0 ppb
2016-04-18	9590-605-1000	15.0 ppb
2016-04-25	9590-602-1215	14.0 ppb
2016-04-25	9590-603-1025	22.0 ppb
2016-04-25	9590-604-1045	13.0 ppb
2016-04-25	9590-605-1000	18.0 ppb
2016-05-03	9590-602-1010	4.50 ppb
2016-05-03	9590-603-1025	12.0 ppb
2016-05-03	9590-604-1040	7.80 ppb
2016-05-03	9590-605-0950	14.0 ppb
2016-05-12	9590-026-0915	ND
2016-05-12	9590-601-1020	12.0 ppb
2016-05-12	9590-602-0945	7.00 ppb
2016-05-12	9590-603-0930	7.80 ppb
2016-05-12	9590-604-1005	4.50 ppb
2016-05-12	9590-605-0830	5.40 ppb
2016-05-12	9590-606-0820	ND
2016-05-12	9590-607-0850	4.40 ppb
2016-05-12	9590-608-1050	9.70 ppb
2016-08-18	5810-601-0110	12.0 ppb
2016-08-18	5810-602-1010	25.0 ppb
2016-08-18	5810-603-1240	7.30 ppb
2016-08-18	5810-604-1255	9.30 ppb
2016-08-18	5810-605-0930	19.0 ppb
2016-08-18	5810-606-1000	ND
2016-08-18	5810-607-0945	ND
2016-08-18	5810-608-0145	5.40 ppb
2016-11-10	5810-601-0855	22.0 ppb
2016-11-10	5810-602-0920	18.0 ppb
2016-11-10	5810-603-0800	18.0 ppb
2016-11-10	5810-604-0815	8.40 ppb
2016-11-10	5810-605-0845	15.0 ppb
2016-11-10	5810-606-0945	ND
2016-11-10	5810-607-0900	19.0 ppb
2016-11-10	5810-608-0830	30.0 ppb
2017-02-16	5810-601-0920	11.0 ppb
2017-02-16	5810-602-0850	10.00 ppb
2017-02-16	5810-603-0820	10.00 ppb
2017-02-16	5810-604-0900	12.0 ppb
2017-02-16	5810-605-0835	7.60 ppb
2017-02-16	5810-606-1055	ND
2017-02-16	5810-607-1035	ND
2017-02-16	5810-608-1000	16.0 ppb
2017-03-23	5810-008-0925	ND
2017-03-23	5810-009-1030	ND
2017-03-23	5810-010-1115	ND
2017-03-23	5810-019-0855	ND
2017-05-11	5810-601-0850	3.90 ppb
2017-05-11	5810-602-1000	2.00 ppb
2017-05-11	5810-603-0940	3.50 ppb
2017-05-11	5810-604-0915	3.70 ppb
2017-05-11	5810-605-1020	ND
2017-05-11	5810-606-1110	ND
2017-05-11	5810-607-1050	ND
2017-05-11	5810-608-0830	1.10 ppb
2017-08-04	5810-601-1035	18.0 ppb
2017-08-04	5810-602-1000	12.0 ppb
2017-08-04	5810-603-0950	3.40 ppb
2017-08-04	5810-604-1015	3.50 ppb
2017-08-04	5810-605-0930	2.80 ppb
2017-08-04	5810-606-0800	ND
2017-08-04	5810-607-0915	18.0 ppb
2017-08-04	5810-608-1050	ND
2017-11-09	5810-601-0930	ND
2017-11-09	5810-602-0840	4.50 ppb
2017-11-09	5810-603-0815	3.00 ppb
2017-11-09	5810-604-0900	3.40 ppb
2017-11-09	5810-605-0910	2.70 ppb
2017-11-09	5810-606-1030	ND
2017-11-09	5810-607-0955	1.70 ppb
2017-11-09	5810-608-1000	ND
2018-02-23	5810-601-1010	10.00 ppb
2018-02-23	5810-602-0815	2.60 ppb
2018-02-23	5810-603-0930	3.50 ppb
2018-02-23	5810-604-0950	2.80 ppb
2018-02-23	5810-605-0915	2.40 ppb
2018-02-23	5810-606-0800	8.00 ppb
2018-02-23	5810-607-1300	9.80 ppb
2018-02-23	5810-608-1045	1.000 ppb
2018-05-18	5810-601-0900	3.90 ppb
2018-05-18	5810-602-0950	4.50 ppb
2018-05-18	5810-603-0935	3.80 ppb
2018-05-18	5810-604-0915	3.70 ppb
2018-05-18	5810-605-1010	5.60 ppb
2018-05-18	5810-606-1245	ND
2018-05-18	5810-607-1230	ND
2018-05-18	5810-608-0830	1.20 ppb
2018-06-29	5810-005-1015	ND
2018-08-24	4790-601-0915	4.20 ppb
2018-08-24	4790-602-1250	1.10 ppb
2018-08-24	4790-603-1020	7.70 ppb
2018-08-24	4790-604-0950	2.90 ppb
2018-08-24	4790-605-0910	17.0 ppb
2018-08-24	4790-606-1055	ND
2018-08-24	4790-607-0935	4.00 ppb
2018-08-24	4790-608-0845	1.10 ppb
2018-11-21	4790-601-1205	13.0 ppb
2018-11-21	4790-602-0715	2.50 ppb
2018-11-21	4790-603-0750	4.00 ppb
2018-11-21	4790-604-0820	3.30 ppb
2018-11-21	4790-605-0905	3.00 ppb
2018-11-21	4790-606-1215	ND
2018-11-21	4790-607-1245	ND
2018-11-21	4790-608-0940	1.70 ppb
2018-12-20	4790-005-0855	ND
2019-01-24	4790-022-0845	ND
2019-01-24	4790-025-0910	ND
2019-02-08	4790-601-0900	4.60 ppb
2019-02-08	4790-602-1100	ND
2019-02-08	4790-603-0940	2.50 ppb
2019-02-08	4790-604-0920	2.10 ppb
2019-02-08	4790-605-0955	1.30 ppb
2019-02-08	4790-606-1300	ND
2019-02-08	4790-607-1045	ND
2019-02-08	4790-608-0830	8.00 ppb
2019-02-14	4790-601-0945	3.20 ppb
2019-02-14	4790-602-1000	1.70 ppb
2019-02-14	4790-603-0845	1.60 ppb
2019-02-14	4790-604-0910	2.00 ppb
2019-02-14	4790-605-0930	7.00 ppb
2019-02-14	4790-606-0900	3.30 ppb
2019-02-14	4790-607-1045	2.80 ppb
2019-02-14	4790-608-1025	1.60 ppb
2019-05-22	4790-601-0930	13.0 ppb
2019-05-22	4790-602-1000	4.00 ppb
2019-05-22	4790-603-0815	14.0 ppb
2019-05-22	4790-604-0845	5.50 ppb
2019-05-22	4790-605-1025	2.60 ppb
2019-05-22	4790-606-1100	ND
2019-05-22	4790-607-1220	ND
2019-05-22	4790-608-1315	1.70 ppb
2019-06-20	4790-035-0930	3.20 ppb
2019-06-27	4790-003-0845	ND
2019-06-27	4790-069-0945	ND
2019-06-27	4790-070-1325	ND
2019-08-19	4790-008-1100	ND
2019-08-19	4790-062-0950	ND
2019-08-21	4790-021-1140	ND
2019-08-22	4790-019-1050	ND
2019-08-23	4790-601-0945	5.60 ppb
2019-08-23	4790-602-0835	6.00 ppb
2019-08-23	4790-603-0855	3.60 ppb
2019-08-23	4790-604-0920	3.10 ppb
2019-08-23	4790-605-0905	3.00 ppb
2019-08-23	4790-606-1000	ND
2019-08-23	4790-607-0930	ND
2019-08-23	4790-608-1020	1.20 ppb
2019-08-27	4790-053-1350	ND
2019-08-27	4790-055-0800	ND
2019-08-27	4790-060-1230	ND
2019-08-28	4790-017-1330	ND
2019-08-29	4790-029-0945	ND
2019-09-10	4790-010-0930	ND
2019-09-17	4790-031-0930	ND
2019-09-19	4790-025-0915	ND
2019-09-19	4790-026-1020	ND
2019-09-30	4790-012-1320	6.40 ppb
2019-09-30	4790-022-0910	ND
2019-11-15	4790-601-0945	5.10 ppb
2019-11-15	4790-602-1230	2.30 ppb
2019-11-15	4790-603-0920	3.60 ppb
2019-11-15	4790-604-0930	2.90 ppb
2019-11-15	4790-605-0900	2.10 ppb
2019-11-15	4790-606-0815	ND
2019-11-15	4790-607-0840	ND
2019-11-15	4790-608-1310	7.30 ppb