Bromodichloromethane

City of Elko

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

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	6	0	ND
2015	ND	4	0	ND
2016	0.300 ppb	3	2	ND - 0.610 ppb
2017	0.350 ppb	2	1	ND - 0.700 ppb
2018	0.445 ppb	2	1	ND - 0.890 ppb
2019	0.0640 ppb	10	1	ND - 0.640 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
2014-02-18	S201402-0667	ND
2014-05-07	A4E0883-01	ND
2014-07-21	A4G2269-01	ND
2014-07-23	1416770-01	ND
2014-07-23	1416779-01	ND
2014-07-23	1416780-01	ND
2015-02-18	1504270-01	ND
2015-05-19	A5E1802-01	ND
2015-07-06	1516571-01	ND
2015-08-24	1521530-01	ND
2016-02-09	1604489-01	0.610 ppb
2016-03-23	A6C2465-01-VOC	ND
2016-07-13	1619519-01	0.290 ppb
2017-03-13	A7C1589-01	0.700 ppb
2017-07-24	A7G2771-01	ND
2018-02-06	A8B0843-01	0.890 ppb
2018-07-10	A8G1892-01	ND
2019-02-25	A9B2786-01	0.640 ppb
2019-07-10	A9G1892-01	ND
2019-08-19	B19081870-001	ND
2019-08-19	B19081921-001	ND
2019-08-20	B19082032-001	ND
2019-08-20	B19082034-001A	ND
2019-08-21	B19082173-001A	ND
2019-08-21	B19082177-001	ND
2019-09-04	B19090361-001A	ND
2019-10-28	B19102498-001	ND