Dibromochloromethane

City of Conover

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

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	0.313 ppb	16	4	ND - 2.00 ppb
2015	0.438 ppb	16	5	ND - 2.00 ppb
2016	0.813 ppb	16	8	ND - 2.00 ppb
2017	0.275 ppb	16	4	ND - 1.20 ppb
2018	ND	16	0	ND
2019	0.344 ppb	16	5	ND - 1.20 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
2014-02-03	T-1402-005	ND
2014-02-03	T-1402-004	ND
2014-02-03	T-1402-003	ND
2014-02-03	T-1402-006	ND
2014-05-12	T-1405-053	ND
2014-05-12	T-1405-052	ND
2014-05-12	T-1405-051	ND
2014-05-12	T-1405-050	ND
2014-08-04	T-1408-004	ND
2014-08-04	T-1408-003	ND
2014-08-04	T-1408-002	ND
2014-08-04	T-1408-001	ND
2014-11-03	T-1411-003	1.000 ppb
2014-11-03	T-1411-002	1.000 ppb
2014-11-03	T-1411-004	1.000 ppb
2014-11-03	T-1411-005	2.00 ppb
2015-02-02		ND
2015-02-02		ND
2015-02-02		ND
2015-02-02		ND
2015-05-04		1.000 ppb
2015-05-04		ND
2015-05-04		ND
2015-05-04		ND
2015-08-03		2.00 ppb
2015-08-03		2.00 ppb
2015-08-03		1.000 ppb
2015-08-03		1.000 ppb
2015-11-10		ND
2015-11-10		ND
2015-11-10		ND
2015-11-10		ND
2016-02-08	T-1602-048	ND
2016-02-08	T-1602-047	ND
2016-02-08	T-1602-046	ND
2016-02-08	T-1602-045	ND
2016-05-03	T-1605-006	ND
2016-05-03	T-1605-005	ND
2016-05-03	T-1605-004	ND
2016-05-03	T-1605-003	ND
2016-08-02	T-1608-017	2.00 ppb
2016-08-02	T-1608-016	2.00 ppb
2016-08-02	T-1608-018	2.00 ppb
2016-08-02	T-1608-019	2.00 ppb
2016-11-09	27542-01	1.30 ppb
2016-11-09	27542-02	1.10 ppb
2016-11-09	27542-03	1.20 ppb
2016-11-09	27542-04	1.40 ppb
2017-02-14	T-1702-062	ND
2017-02-14	T-1702-063	ND
2017-02-14	T-1702-064	ND
2017-02-14	T-1702-065	ND
2017-05-09	T-1705-066	ND
2017-05-09	T-1705-065	ND
2017-05-09	T-1705-064	ND
2017-05-09	T-1705-063	ND
2017-08-03	37227-02	1.000 ppb
2017-08-03	38227-01	1.20 ppb
2017-08-03	38227-03	1.000 ppb
2017-08-03	38227-04	1.20 ppb
2017-11-02	42360-01	ND
2017-11-02	42360-02	ND
2017-11-02	42360-03	ND
2017-11-02	42360-04	ND
2018-02-15	46787-04	ND
2018-02-15	46787-03	ND
2018-02-15	46787-02	ND
2018-02-15	46787-01	ND
2018-05-10	50505-04	ND
2018-05-10	50505-01	ND
2018-05-10	50505-02	ND
2018-05-10	50505-03	ND
2018-08-03	54582-01	ND
2018-08-03	54581-01	ND
2018-08-03	54580-01	ND
2018-08-03	54579-01	ND
2018-11-09	58939-01	ND
2018-11-09	58939-02	ND
2018-11-09	58939-03	ND
2018-11-09	58939-04	ND
2019-02-19	63372-01	ND
2019-02-19	63372-02	ND
2019-02-19	63372-03	ND
2019-02-19	63372-04	ND
2019-05-14	66929-01	ND
2019-05-14	66929-04	ND
2019-05-14	66929-03	ND
2019-05-14	66929-02	ND
2019-08-13	70900-02	1.000 ppb
2019-08-13	70900-04	1.10 ppb
2019-08-13	70900-03	1.10 ppb
2019-08-13	70900-01	1.20 ppb
2019-11-05	74634-04	1.10 ppb
2019-11-05	74634-03	ND
2019-11-05	74634-02	ND
2019-11-05	74634-01	ND