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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Highland Court

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.90 ppb112.90 ppb
20134.45 ppb114.45 ppb
20144.50 ppb114.50 ppb
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-06-2612069290032.90 ppb
2013-05-16Q13012460024.45 ppb
2014-05-05Q14144240014.50 ppb
2015-02-16Q1506107002ND
2015-05-28Q1519625001ND
2016-02-10Q1605917002ND
2016-05-24Q1620358001ND
2017-02-06Q1704892002ND
2017-05-24Q1721623001ND