Dibromochloromethane

Espanola Water System

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
2014	ND	12	0	ND
2015	0.728 ppb	12	4	ND - 4.50 ppb
2016	1.02 ppb	12	6	ND - 3.69 ppb
2017	1.29 ppb	16	12	ND - 3.04 ppb
2018	0.668 ppb	16	11	ND - 1.66 ppb
2019	0.181 ppb	16	3	ND - 1.44 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
2014-01-31	1402016-001A	ND
2014-01-31	1402014-001A	ND
2014-01-31	1402013-001A	ND
2014-01-31	1402015-001A	ND
2014-04-29	1404B77-001A	ND
2014-04-29	1404B79-001A	ND
2014-04-29	1404B81-001A	ND
2014-04-29	1404B80-001A	ND
2014-10-31	1410E45-001A	ND
2014-10-31	1410E44-001A	ND
2014-10-31	1410E43-001A	ND
2014-10-31	1410E46-001A	ND
2015-01-27	1501937-001A	ND
2015-01-27	1501934-001A	ND
2015-01-27	1501935-001A	ND
2015-01-27	1501936-001A	ND
2015-03-26	1503C41-001A	ND
2015-03-26	1503C42-001A	ND
2015-03-26	1503C45-001A	ND
2015-03-26	1503C44-001A	ND
2015-07-21	2015021115	0.600 ppb
2015-07-21	2015021116	0.730 ppb
2015-07-21	2015021117	4.50 ppb
2015-07-21	2015021114	2.90 ppb
2016-04-19	1604845-001A	1.62 ppb
2016-04-19	1604844-001A	0.535 ppb
2016-04-19	1604843-001A	ND
2016-04-19	1604842-001A	ND
2016-07-14	1607761-001A	3.01 ppb
2016-07-14	1607759-001A	1.33 ppb
2016-07-14	1607760-001A	ND
2016-07-14	1607762-001A	ND
2016-10-13	1610663-001	3.69 ppb
2016-10-13	1610661-001	ND
2016-10-13	1610662-001	ND
2016-10-13	1610660-001	2.08 ppb
2017-01-12	1701563-001	1.78 ppb
2017-01-12	1701562-001	1.20 ppb
2017-01-12	1701560-001	ND
2017-01-12	1701558-001	ND
2017-04-13	1704605-001	ND
2017-04-13	1704603-001	0.558 ppb
2017-04-13	1704602-001	2.63 ppb
2017-04-13	1704604-001	2.60 ppb
2017-07-13	1707714-001	1.76 ppb
2017-07-13	1707715-001	1.63 ppb
2017-07-13	1707712-001	1.24 ppb
2017-07-13	1707711-001	0.699 ppb
2017-10-13	1710845-001	3.04 ppb
2017-10-13	1710848-001	2.69 ppb
2017-10-13	1710847-001	0.889 ppb
2017-10-13	1710849-001	ND
2018-01-11	1801664-001	ND
2018-01-11	1801663-001	0.905 ppb
2018-01-11	1801662-001	0.545 ppb
2018-01-11	1801660-001	1.48 ppb
2018-04-13	1804794-001	1.66 ppb
2018-04-13	1804791-001	1.04 ppb
2018-04-13	1804792-001	ND
2018-04-13	1804793-001	ND
2018-07-12	1807661-001	0.880 ppb
2018-07-12	1807660-001	ND
2018-07-12	1807659-001	0.559 ppb
2018-07-12	1807657-001	0.804 ppb
2018-10-11	1810716-001	ND
2018-10-11	1810717-001	0.793 ppb
2018-10-11	1810719-001	0.619 ppb
2018-10-11	1810721-001	1.41 ppb
2019-01-14	1901534-001	0.934 ppb
2019-01-14	1901536-001	ND
2019-01-14	1901539-001	ND
2019-01-14	1901540-001	ND
2019-04-04	1904399-001	ND
2019-04-04	1904404-001	ND
2019-04-04	1904402-001	0.521 ppb
2019-04-04	1904400-001	1.44 ppb
2019-07-12	1907674-001	ND
2019-07-12	1907677-001	ND
2019-07-12	1907676-001	ND
2019-07-12	1907673-001	ND
2019-10-09	1910605-001	ND
2019-10-09	1910603-001	ND
2019-10-09	1910602-001	ND
2019-10-09	1910601-001	ND