Dibromochloromethane

Camp Pendleton (North)

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

186

Samples

Samples exceeding legal limit (MCL)

123

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	3.06 ppb	33	21	ND - 8.90 ppb
2015	4.38 ppb	34	26	ND - 16.0 ppb
2016	2.91 ppb	36	24	ND - 8.00 ppb
2017	5.50 ppb	29	19	ND - 26.0 ppb
2018	5.95 ppb	27	17	ND - 18.0 ppb
2019	6.47 ppb	27	16	ND - 24.0 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
2014-01-27	9590-002-1150	3.80 ppb
2014-01-27	9590-003-1135	ND
2014-02-06	2168-801-1135	5.10 ppb
2014-02-06	2168-802-1050	3.00 ppb
2014-02-06	2168-803-1110	6.60 ppb
2014-02-06	2168-804-1005	3.70 ppb
2014-03-12	9590-011-1135	ND
2014-04-17	9590-006-1045	ND
2014-04-17	9590-008-1115	ND
2014-04-17	9590-009-1146	ND
2014-04-18	9590-004-1152	ND
2014-04-18	9590-005-1210	ND
2014-04-18	9590-022-1120	ND
2014-05-07	2168-801-1215	7.10 ppb
2014-05-07	2168-802-1205	3.30 ppb
2014-05-07	2168-803-1135	4.80 ppb
2014-05-07	2168-804-1055	4.70 ppb
2014-05-21	9590-002-1240	2.90 ppb
2014-05-21	9590-003-1200	ND
2014-05-21	9590-010-1135	2.40 ppb
2014-07-14	9590-002-1045	ND
2014-07-14	9590-003-1020	ND
2014-08-06	2168-801-1210	7.20 ppb
2014-08-06	2168-802-1030	6.30 ppb
2014-08-06	2168-803-1055	8.90 ppb
2014-08-06	2168-804-1145	4.30 ppb
2014-11-03	2168-801-1315	6.70 ppb
2014-11-03	2168-802-1240	3.90 ppb
2014-11-03	2168-803-1210	6.50 ppb
2014-11-03	2168-804-1350	5.80 ppb
2014-11-20	9590-003-1355	ND
2014-11-24	9590-002-1135	1.60 ppb
2014-11-24	9590-010-1245	2.30 ppb
2015-01-26	9590-010-1240	2.90 ppb
2015-01-28	9590-002-1120	2.20 ppb
2015-01-28	9590-003-1045	ND
2015-02-04	2168-801-1415	6.10 ppb
2015-02-04	2168-802-1340	2.30 ppb
2015-02-04	2168-803-1235	6.80 ppb
2015-02-04	2168-804-1310	4.90 ppb
2015-03-20	9590-006-1040	ND
2015-03-20	9590-008-1115	ND
2015-03-20	9590-009-1156	ND
2015-05-04	2168-801-1415	7.20 ppb
2015-05-04	2168-802-1350	4.90 ppb
2015-05-04	2168-803-1310	7.90 ppb
2015-05-04	2168-804-1225	4.80 ppb
2015-05-11	9590-002-1315	3.00 ppb
2015-05-11	9590-003-1250	ND
2015-05-11	9590-010-1215	2.50 ppb
2015-07-31	9590-002-1340	ND
2015-08-03	9590-003-1235	2.80 ppb
2015-08-04	2168-801-1310	8.80 ppb
2015-08-04	2168-802-1335	4.50 ppb
2015-08-04	2168-803-1155	9.60 ppb
2015-08-04	2168-804-1235	5.40 ppb
2015-08-06	9590-010-1130	2.30 ppb
2015-08-20	9590-005-1045	14.0 ppb
2015-10-15	9590-010-1335	3.60 ppb
2015-10-22	9590-002-1200	2.30 ppb
2015-10-22	9590-003-1110	ND
2015-11-04	2168-801-1150	5.10 ppb
2015-11-04	2168-802-1130	4.70 ppb
2015-11-04	2168-803-1105	6.30 ppb
2015-11-04	2168-804-1030	8.00 ppb
2015-11-05	9590-004-1010	16.0 ppb
2015-11-05	9590-022-0945	ND
2016-01-28	9590-010-1255	ND
2016-01-28	9590-011-1215	ND
2016-02-01	9590-005-1145	ND
2016-02-04	2168-801-1315	2.80 ppb
2016-02-04	2168-802-1335	2.90 ppb
2016-02-04	2168-803-1215	3.20 ppb
2016-02-04	2168-804-1245	3.10 ppb
2016-02-05	9590-002-1230	ND
2016-02-05	9590-003-1155	ND
2016-02-05	9590-004-1010	7.20 ppb
2016-02-05	9590-006-1130	ND
2016-02-05	9590-008-1100	ND
2016-05-04	2168-801-1135	2.80 ppb
2016-05-04	2168-802-1215	4.70 ppb
2016-05-04	2168-803-1100	4.10 ppb
2016-05-04	2168-804-1250	6.40 ppb
2016-05-10	9590-010-1235	3.70 ppb
2016-05-10	9590-011-1155	1.30 ppb
2016-05-12	9590-003-1250	ND
2016-06-02	9590-002-1145	2.20 ppb
2016-08-03	9590-010-1315	3.50 ppb
2016-08-03	9590-011-1255	8.00 ppb
2016-08-04	2168-801-1300	3.60 ppb
2016-08-04	2168-802-1230	4.00 ppb
2016-08-04	2168-803-1200	7.10 ppb
2016-08-04	2168-804-1050	5.70 ppb
2016-08-05	9590-002-1300	ND
2016-08-05	9590-003-1240	ND
2016-11-07	2168-801-1145	3.70 ppb
2016-11-07	2168-802-1215	5.90 ppb
2016-11-07	2168-803-1245	5.70 ppb
2016-11-07	2168-804-1315	6.90 ppb
2016-11-17	9590-002-1120	ND
2016-11-17	9590-003-1210	ND
2016-11-22	9590-010-1100	2.00 ppb
2016-11-22	9590-011-1025	4.40 ppb
2017-02-03	2168-801-1210	2.40 ppb
2017-02-03	2168-802-1250	1.40 ppb
2017-02-03	2168-803-1320	3.60 ppb
2017-02-03	2168-804-1405	4.90 ppb
2017-02-09	9590-002-1115	2.40 ppb
2017-02-09	9590-003-1200	ND
2017-02-13	9590-006-1210	ND
2017-02-15	9590-008-1015	ND
2017-03-01	9590-004-1200	ND
2017-03-01	9590-005-1123	ND
2017-05-03	9590-002-1130	ND
2017-05-03	9590-003-1230	ND
2017-05-05	2168-801-1120	26.0 ppb
2017-05-05	2168-802-1205	3.70 ppb
2017-05-05	2168-803-1255	14.0 ppb
2017-05-05	2168-804-1325	12.0 ppb
2017-07-26	9590-002-1145	ND
2017-07-26	9590-003-1210	ND
2017-08-04	2168-801-1010	10.00 ppb
2017-08-04	2168-802-1035	4.30 ppb
2017-08-04	2168-803-1110	18.0 ppb
2017-08-04	2168-804-1145	11.0 ppb
2017-11-03	2168-801-1050	9.80 ppb
2017-11-03	2168-802-1120	6.20 ppb
2017-11-03	2168-803-1150	13.0 ppb
2017-11-03	2168-804-1225	11.0 ppb
2017-12-07	9590-002-1055	2.50 ppb
2017-12-07	9590-003-1135	ND
2017-12-18	9590-009-1135	3.30 ppb
2018-01-17	9590-002-1250	ND
2018-01-18	9590-003-1315	ND
2018-02-01	9590-008-1145	ND
2018-02-02	9590-006-1040	ND
2018-02-05	9590-009-1130	ND
2018-02-05	2168-801-0930	18.0 ppb
2018-02-05	2168-802-0955	6.90 ppb
2018-02-05	2168-803-1025	9.30 ppb
2018-02-05	2168-804-1055	6.00 ppb
2018-04-13	9590-002-1110	ND
2018-04-23	9590-003-1215	ND
2018-05-04	2168-801-1125	18.0 ppb
2018-05-04	2168-802-1200	5.70 ppb
2018-05-04	2168-803-1235	12.0 ppb
2018-05-04	2168-804-1305	12.0 ppb
2018-07-23	9590-002-0920	ND
2018-07-23	9590-003-1010	ND
2018-08-03	2168-801-1030	10.00 ppb
2018-08-03	2168-802-1058	6.20 ppb
2018-08-03	2168-803-1130	11.0 ppb
2018-08-03	2168-804-1202	8.20 ppb
2018-11-05	2168-801-1030	11.0 ppb
2018-11-05	2168-802-1100	4.50 ppb
2018-11-05	2168-803-1130	12.0 ppb
2018-11-05	2168-804-1205	8.90 ppb
2018-11-15	9590-002-1150	ND
2018-12-12	9590-003-1120	1.000 ppb
2019-01-29	9590-002-1115	ND
2019-01-29	9590-003-1200	ND
2019-02-04	2168-801-1050	13.0 ppb
2019-02-04	2168-802-1120	1.40 ppb
2019-02-04	2168-803-1200	9.20 ppb
2019-02-04	2168-804-1230	9.30 ppb
2019-02-08	9590-006-0900	ND
2019-02-08	9590-008-1015	ND
2019-02-11	9590-009-1146	ND
2019-05-03	2168-801-1015	18.0 ppb
2019-05-03	2168-802-0945	5.60 ppb
2019-05-03	2168-803-0825	13.0 ppb
2019-05-03	2168-804-0910	9.80 ppb
2019-05-24	9590-002-1130	ND
2019-05-29	9590-003-1130	ND
2019-07-29	9590-002-1100	ND
2019-07-29	9590-003-1200	ND
2019-08-05	2168-801-0750	21.0 ppb
2019-08-05	2168-802-0840	8.00 ppb
2019-08-05	2168-803-0915	14.0 ppb
2019-08-05	2168-804-0946	11.0 ppb
2019-11-04	2168-801-1115	24.0 ppb
2019-11-04	2168-802-1135	1.70 ppb
2019-11-04	2168-803-1205	7.30 ppb
2019-11-04	2168-804-1240	8.50 ppb
2019-11-05	9590-002-1110	ND
2019-11-05	9590-003-1200	ND