Bromodichloromethane

City of Moses Lake

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	0.650 ppb	2	1	ND - 1.30 ppb
2015	0.400 ppb	3	1	ND - 1.20 ppb
2016	0.122 ppb	9	1	ND - 1.10 ppb
2017	0.129 ppb	14	1	ND - 1.80 ppb
2018	0.0714 ppb	7	1	ND - 0.500 ppb
2019	0.0844 ppb	9	1	ND - 0.760 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
2014-07-15	73799	1.30 ppb
2014-07-15	73800	ND
2015-03-10	74810	ND
2015-07-14	75193	ND
2015-07-14	75188	1.20 ppb
2016-03-08		ND
2016-06-20		ND
2016-06-20		ND
2016-06-20		ND
2016-06-20		ND
2016-07-25		ND
2016-07-25		1.10 ppb
2016-09-20		ND
2016-09-20		ND
2017-06-20		ND
2017-06-20		ND
2017-06-20		ND
2017-06-20		ND
2017-06-20		ND
2017-06-20		ND
2017-06-20		ND
2017-06-26		ND
2017-06-26		ND
2017-06-26		ND
2017-06-26		ND
2017-07-05		ND
2017-07-05		1.80 ppb
2017-11-27		ND
2018-01-31		ND
2018-04-03		ND
2018-06-28		ND
2018-07-09		0.500 ppb
2018-07-09		ND
2018-09-11		ND
2018-11-06		ND
2019-03-26		ND
2019-07-09		ND
2019-07-29		ND
2019-07-30		ND
2019-07-30		ND
2019-10-01		ND
2019-11-12		ND
2019-11-12		ND
2019-12-03		0.760 ppb