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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Franklin Water Systems 3

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.575 ppb42ND - 1.70 ppb
2013N/A00N/A
2014ND30ND
2015ND40ND
20160.410 ppb61ND - 2.46 ppb
20170.927 ppb101ND - 9.27 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
2012-06-25AB93695ND
2012-06-25AB93694ND
2012-09-27AC022701.70 ppb
2012-09-27AC022720.600 ppb
2014-06-24Q1423214008ND
2014-06-24Q1423214004ND
2014-06-24Q1423214002ND
2015-06-23Q1523311008ND
2015-06-23Q1523311006ND
2015-06-23Q1523311004ND
2015-06-23Q1523311002ND
2016-03-08Q1609693001ND
2016-03-08Q16096930052.46 ppb
2016-03-08Q1609693004ND
2016-06-08Q1622883010ND
2016-12-13Q1654192014ND
2016-12-13Q1654192012ND
2017-03-21Q1711955005ND
2017-03-21Q1711955004ND
2017-03-21Q1711955002ND
2017-03-21Q17119550129.27 ppb
2017-03-21Q1711955011ND
2017-06-07AD86935ND
2017-06-07AD86938ND
2017-06-21Q1725672001ND
2017-07-25Q1730588010ND
2017-07-25Q1730588005ND