Dibromochloromethane

Key Road Subdivision Water System

NOTE: Key Road Subdivision Water System purchases water from Victoria County Water Control and Improvement District 1 which is required to test for dibromochloromethane. Sample information shown below was taken by Victoria County Water Control and Improvement District 1.

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	Range of results
2014	ND	1	ND
2015	ND	2	ND
2016	ND	2	ND
2017	ND	2	ND
2018	ND	2	ND
2019	ND	2	ND

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
2014-08-12	AC63063	ND
2015-08-10	AD03241	ND
2015-10-26	AD11727	ND
2016-06-06	AD39426	ND
2016-06-06	AD39420	ND
2017-01-10	AD64376	ND
2017-07-12	AD89294	ND
2018-02-21	AE14723	ND
2018-08-28	AE38685	ND
2019-02-21	AE55364	ND
2019-06-11	AE70019	ND