Dibromochloromethane

City of Durham

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

288

Samples

Samples exceeding legal limit (MCL)

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	0.530 ppb	48	29	ND - 1.10 ppb
2015	0.671 ppb	48	26	ND - 1.70 ppb
2016	0.648 ppb	48	24	ND - 1.70 ppb
2017	0.521 ppb	48	2	ND - 13.0 ppb
2018	0.0521 ppb	48	2	ND - 1.50 ppb
2019	0.240 ppb	48	7	ND - 3.20 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
2014-02-11	C400987-03	ND
2014-02-11	C400987-04	ND
2014-02-11	C400987-05	ND
2014-02-11	C400987-06	ND
2014-02-11	C400987-07	ND
2014-02-11	C400987-08	ND
2014-02-11	C400987-09	ND
2014-02-11	C400987-10	ND
2014-02-11	C400987-11	ND
2014-02-11	C400987-12	ND
2014-02-11	C400987-13	ND
2014-02-11	C400987-14	ND
2014-05-13	C405354-03	0.710 ppb
2014-05-13	C405354-04	0.860 ppb
2014-05-13	C405354-05	0.640 ppb
2014-05-13	C405354-06	0.670 ppb
2014-05-13	C405354-07	0.670 ppb
2014-05-13	C405354-08	0.650 ppb
2014-05-13	C405354-09	0.780 ppb
2014-05-13	C405354-10	0.590 ppb
2014-05-13	C405354-11	0.710 ppb
2014-05-13	C405354-12	0.720 ppb
2014-05-13	C405354-13	0.540 ppb
2014-05-13	C405354-14	0.640 ppb
2014-08-12	C409625-03	0.900 ppb
2014-08-12	C409625-04	1.10 ppb
2014-08-12	C409625-05	1.000 ppb
2014-08-12	C409625-06	0.990 ppb
2014-08-12	C409625-07	1.10 ppb
2014-08-12	C409625-08	1.10 ppb
2014-08-12	C409625-09	1.10 ppb
2014-08-12	C409625-10	0.870 ppb
2014-08-12	C409625-11	1.10 ppb
2014-08-12	C409625-12	0.970 ppb
2014-08-12	C409625-13	0.650 ppb
2014-08-12	C409625-14	1.000 ppb
2014-11-11	C414066-12	1.10 ppb
2014-11-11	C414066-13	ND
2014-11-11	C414066-14	1.000 ppb
2014-11-11	C414066-03	ND
2014-11-11	C414066-04	1.10 ppb
2014-11-11	C414066-05	1.10 ppb
2014-11-11	C414066-06	ND
2014-11-11	C414066-07	ND
2014-11-11	C414066-08	ND
2014-11-11	C414066-09	ND
2014-11-11	C414066-10	ND
2014-11-11	C414066-11	1.10 ppb
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-02-10		ND
2015-05-12		1.30 ppb
2015-05-12		1.20 ppb
2015-05-12		1.20 ppb
2015-05-12		1.20 ppb
2015-05-12		1.20 ppb
2015-05-12		1.20 ppb
2015-05-12		1.20 ppb
2015-05-12		1.000 ppb
2015-05-12		1.20 ppb
2015-05-12		1.20 ppb
2015-05-12		1.000 ppb
2015-05-12		1.20 ppb
2015-08-10		1.20 ppb
2015-08-10		1.30 ppb
2015-08-10		1.30 ppb
2015-08-10		1.30 ppb
2015-08-10		1.30 ppb
2015-08-10		1.20 ppb
2015-08-10		1.30 ppb
2015-08-10		1.20 ppb
2015-08-10		1.20 ppb
2015-08-10		1.40 ppb
2015-08-10		1.10 ppb
2015-08-10		1.30 ppb
2015-11-11		ND
2015-11-11		1.30 ppb
2015-11-11		ND
2015-11-11		ND
2015-11-11		ND
2015-11-11		ND
2015-11-11		ND
2015-11-11		ND
2015-11-11		ND
2015-11-11		ND
2015-11-11		ND
2015-11-11		1.70 ppb
2016-02-09	CZ01069-03	ND
2016-02-09	CZ01069-04	ND
2016-02-09	CZ01069-05	ND
2016-02-09	CZ01069-06	ND
2016-02-09	CZ01069-07	ND
2016-02-09	CZ01069-08	ND
2016-02-09	CZ01069-09	ND
2016-02-09	CZ01069-10	ND
2016-02-09	CZ01069-11	ND
2016-02-09	CZ01069-12	ND
2016-02-09	CZ01069-13	ND
2016-02-09	CZ01069-14	ND
2016-05-11	CZ05502-02	1.10 ppb
2016-05-11	CZ05502-03	1.30 ppb
2016-05-11	CZ05502-04	1.000 ppb
2016-05-11	CZ05502-05	1.10 ppb
2016-05-11	CZ05502-06	1.20 ppb
2016-05-11	CZ05502-07	1.000 ppb
2016-05-11	CZ05502-09	1.20 ppb
2016-05-11	CZ05502-10	1.30 ppb
2016-05-11	CZ05502-11	1.30 ppb
2016-05-11	CZ05502-12	1.20 ppb
2016-05-11	CZ05502-13	1.20 ppb
2016-05-11	CZ05502-14	1.20 ppb
2016-08-09	CZ10772-03	1.70 ppb
2016-08-09	CZ10772-04	1.50 ppb
2016-08-09	CZ10772-05	1.40 ppb
2016-08-09	CZ10772-06	1.40 ppb
2016-08-09	CZ10772-07	1.60 ppb
2016-08-09	CZ10772-08	1.60 ppb
2016-08-09	CZ10772-09	1.30 ppb
2016-08-09	CZ10772-10	1.10 ppb
2016-08-09	CZ10772-11	1.60 ppb
2016-08-09	CZ10772-12	1.40 ppb
2016-08-09	CZ10772-13	1.10 ppb
2016-08-09	CZ10772-14	1.30 ppb
2016-11-08	CZ16179-03	ND
2016-11-09	CZ16179-04	ND
2016-11-09	CZ16179-05	ND
2016-11-09	CZ16179-06	ND
2016-11-09	CZ16179-07	ND
2016-11-09	CZ16179-08	ND
2016-11-09	CZ16179-09	ND
2016-11-09	CZ16179-10	ND
2016-11-09	CZ16179-11	ND
2016-11-09	CZ16179-12	ND
2016-11-09	CZ16179-13	ND
2016-11-09	CZ16179-14	ND
2017-02-15	CA00946-03	ND
2017-02-15	CA00946-04	ND
2017-02-15	CA00946-05	ND
2017-02-15	CA00946-06	ND
2017-02-15	CA00946-07	ND
2017-02-15	CA00946-08	ND
2017-02-15	CA00946-09	ND
2017-02-15	CA00946-10	ND
2017-02-15	CA00946-11	ND
2017-02-15	CA00946-12	ND
2017-02-15	CA00946-13	ND
2017-02-15	CA00946-14	ND
2017-05-08	CA06171-03	ND
2017-05-08	CA06171-04	ND
2017-05-08	CA06171-05	ND
2017-05-08	CA06171-06	ND
2017-05-08	CA06171-07	ND
2017-05-08	CA06171-08	ND
2017-05-08	CA06171-09	ND
2017-05-08	CA06171-10	ND
2017-05-08	CA06171-11	ND
2017-05-08	CA06171-12	ND
2017-05-08	CA06171-13	ND
2017-05-08	CA06171-14	ND
2017-08-08	CA11368-03	ND
2017-08-08	CA11368-04	ND
2017-08-08	CA11368-05	ND
2017-08-08	CA11368-06	ND
2017-08-08	CA11368-07	ND
2017-08-08	CA11368-08	ND
2017-08-08	CA11368-09	ND
2017-08-08	CA11368-10	ND
2017-08-08	CA11368-11	ND
2017-08-08	CA11368-12	ND
2017-08-08	CA11368-13	ND
2017-08-08	CA11368-14	ND
2017-11-14	CA16981-03	ND
2017-11-14	CA16981-04	13.0 ppb
2017-11-14	CA16981-05	12.0 ppb
2017-11-14	CA16981-06	ND
2017-11-14	CA16981-07	ND
2017-11-14	CA16981-08	ND
2017-11-14	CA16981-09	ND
2017-11-14	CA16981-10	ND
2017-11-14	CA16981-11	ND
2017-11-14	CA16981-12	ND
2017-11-14	CA16981-13	ND
2017-11-14	CA16981-14	ND
2018-02-13	CB01007-03	ND
2018-02-13	CB01007-04	1.000 ppb
2018-02-13	CB01007-05	ND
2018-02-13	CB01007-06	ND
2018-02-13	CB01007-07	ND
2018-02-13	CB01007-08	ND
2018-02-13	CB01007-09	ND
2018-02-13	CB01007-10	ND
2018-02-13	CB01007-11	ND
2018-02-13	CB01007-12	ND
2018-02-13	CB01007-13	ND
2018-02-13	CB01007-14	ND
2018-05-08	CB06320-03	ND
2018-05-08	CB06320-04	ND
2018-05-08	CB06320-05	ND
2018-05-08	CB06320-06	ND
2018-05-08	CB06320-07	ND
2018-05-08	CB06320-08	ND
2018-05-08	CB06320-09	ND
2018-05-08	CB06320-10	ND
2018-05-08	CB06320-11	ND
2018-05-08	CB06320-12	ND
2018-05-08	CB06320-13	1.50 ppb
2018-05-08	CB06320-14	ND
2018-08-14	CB11155-03	ND
2018-08-14	CB11155-04	ND
2018-08-14	CB11155-05	ND
2018-08-14	CB11155-06	ND
2018-08-14	CB11155-07	ND
2018-08-14	CB11155-08	ND
2018-08-14	CB11155-09	ND
2018-08-14	CB11155-10RE1	ND
2018-08-14	CB11155-11RE1	ND
2018-08-14	CB11155-12	ND
2018-08-14	CB11155-13	ND
2018-08-14	CB11155-14	ND
2018-11-12	CB16648-03	ND
2018-11-12	CB16648-04	ND
2018-11-12	CB16648-05	ND
2018-11-12	CB16648-06	ND
2018-11-12	CB16648-07	ND
2018-11-12	CB16648-08	ND
2018-11-12	CB16648-09	ND
2018-11-12	CB16648-10	ND
2018-11-12	CB16648-11	ND
2018-11-12	CB16648-12	ND
2018-11-12	CB16648-13	ND
2018-11-12	CB16648-14	ND
2019-02-12	CC01716-03RE1	ND
2019-02-12	CC01716-04	3.20 ppb
2019-02-12	CC01716-05	3.00 ppb
2019-02-12	CC01716-06	ND
2019-02-12	CC01716-07	ND
2019-02-12	CC01716-08RE1	ND
2019-02-12	CC01716-09	ND
2019-02-12	CC01716-10RE1	ND
2019-02-12	CC01716-11	ND
2019-02-12	CC01716-12	ND
2019-02-12	CC01716-13	ND
2019-02-12	CC01716-14	ND
2019-05-14	CC06563-03	ND
2019-05-14	CC06563-04	ND
2019-05-14	CC06563-05	ND
2019-05-14	CC06563-06	ND
2019-05-14	CC06563-07	ND
2019-05-14	CC06563-08	ND
2019-05-14	CC06563-09	ND
2019-05-14	CC06563-10	ND
2019-05-14	CC06563-11	ND
2019-05-14	CC06563-12	ND
2019-05-14	CC06563-13	ND
2019-05-14	CC06563-14	ND
2019-08-13	CC12767-03	ND
2019-08-13	CC12767-04	ND
2019-08-13	CC12767-05	ND
2019-08-13	CC12767-06	ND
2019-08-13	CC12767-07	ND
2019-08-13	CC12767-08	ND
2019-08-13	CC12767-09	ND
2019-08-13	CC12767-10	ND
2019-08-13	CC12767-11	ND
2019-08-13	CC12767-12	ND
2019-08-13	CC12767-13	ND
2019-08-13	CC12767-14	ND
2019-11-12	CC18484-03	1.000 ppb
2019-11-12	CC18484-04	ND
2019-11-12	CC18484-05	1.000 ppb
2019-11-12	CC18484-06	ND
2019-11-12	CC18484-07	ND
2019-11-12	CC18484-08	ND
2019-11-12	CC18484-09	1.20 ppb
2019-11-12	CC18484-10	1.000 ppb
2019-11-12	CC18484-11	1.10 ppb
2019-11-12	CC18484-12	ND
2019-11-12	CC18484-13	ND
2019-11-12	CC18484-14	ND