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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Troy

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.950 ppb110.950 ppb
20141.31 ppb53ND - 2.77 ppb
2015ND10ND
20162.79 ppb112.79 ppb
20170.650 ppb53ND - 1.46 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
2013-10-03AC110420.950 ppb
2014-08-19AC337592.04 ppb
2014-08-19AC33760ND
2014-08-19AC337612.77 ppb
2014-08-19AC33762ND
2014-09-30AC357741.74 ppb
2015-09-29AC59656ND
2016-09-28AC840472.79 ppb
2017-09-11AD074510.730 ppb
2017-09-11AD07453ND
2017-09-11AD074541.46 ppb
2017-09-11AD07452ND
2017-10-02AD066321.06 ppb