Bromodichloromethane

New Caney MUD

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.

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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	3	0	ND
2015	ND	5	0	ND
2016	ND	5	0	ND
2017	ND	5	0	ND
2018	0.240 ppb	5	1	ND - 1.20 ppb
2019	0.200 ppb	5	1	ND - 1.000 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
2014-05-06	AC53147	ND
2014-07-08	AC59073	ND
2014-07-08	AC59094	ND
2015-05-06	AC90738	ND
2015-05-06	AC90735	ND
2015-05-06	AC90778	ND
2015-05-06	AC90774	ND
2015-05-06	AC90790	ND
2016-04-07	AD32318	ND
2016-04-07	AD32324	ND
2016-04-07	AD32320	ND
2016-09-07	AD48104	ND
2016-09-07	AD48117	ND
2017-08-07	AD92238	ND
2017-08-07	AD92221	ND
2017-09-11	AD95481	ND
2017-09-11	AD95489	ND
2017-09-11	AD95461	ND
2018-08-01	AE35294	ND
2018-08-01	AE35296	1.20 ppb
2018-08-01	AE35343	ND
2018-08-01	AE35345	ND
2018-08-01	AE35333	ND
2019-06-24	AE71666	ND
2019-06-24	AE71687	1.000 ppb
2019-10-15	AE86643	ND
2019-10-15	AE86647	ND
2019-10-15	AE86639	ND