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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Wauconda

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.718 ppb65ND - 1.33 ppb
20140.927 ppb129ND - 2.29 ppb
20151.43 ppb220.622 ppb - 2.24 ppb
20162.03 ppb221.28 ppb - 2.78 ppb
20172.03 ppb221.14 ppb - 2.91 ppb

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
2013-08-143082312-020.567 ppb
2013-08-143082312-010.854 ppb
2013-10-083101834-010.617 ppb
2013-10-083101834-020.936 ppb
2013-10-083101834-04ND
2013-10-083101834-031.33 ppb
2014-01-074010823-010.858 ppb
2014-01-074010823-04ND
2014-01-074010823-020.813 ppb
2014-01-074010823-031.26 ppb
2014-04-084041848-031.45 ppb
2014-04-084041848-04ND
2014-04-084041848-021.21 ppb
2014-04-084041848-010.779 ppb
2014-07-084071787-021.69 ppb
2014-07-084071787-032.29 ppb
2014-07-084071787-010.778 ppb
2014-07-084071787-04ND
2015-10-135102508-010.622 ppb
2015-10-135102508-022.24 ppb
2016-10-056101130-011.28 ppb
2016-10-056101130-022.78 ppb
2017-10-257104346-011.14 ppb
2017-10-257104346-022.91 ppb