Bromodichloromethane

Jackpot Water System

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	3.71 ppb	4	4	0.510 ppb - 13.0 ppb
2015	0.598 ppb	5	3	ND - 1.40 ppb
2016	0.140 ppb	4	1	ND - 0.560 ppb
2017	0.410 ppb	1	1	0.410 ppb
2018	0.227 ppb	3	2	ND - 0.520 ppb
2019	0.303 ppb	3	1	ND - 0.910 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
2014-07-28	B14072558-002	13.0 ppb
2014-09-03	B14090395-001	0.510 ppb
2014-10-01	B14100263-005	0.560 ppb
2014-12-01	B14120123-001	0.770 ppb
2015-03-30	B15032313-001	0.690 ppb
2015-03-30	B15032318-001	ND
2015-03-30	B15032325-004	ND
2015-12-01	B15120203-001	0.900 ppb
2015-12-22	B15121778-001	1.40 ppb
2016-04-18	B16041450-002-VO	ND
2016-04-18	B16041450-001-VO	ND
2016-12-05	B16120363-001	ND
2016-12-19	B16121397-001	0.560 ppb
2017-12-27	B17122034-001	0.410 ppb
2018-12-06	B18120574-001	ND
2018-12-06	B18120603-001	0.520 ppb
2018-12-18	B18121683-001	0.160 ppb
2019-01-08	B19010613-001A	ND
2019-11-06	B19110571-001	ND
2019-12-03	B19120287-002	0.910 ppb