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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Anson and Madison Water District

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

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND80ND
2016ND80ND
2017ND60ND
2018N/A00N/A
2019ND60ND

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
2014-03-03ND
2014-05-12ND
2014-05-12ND
2014-08-20ND
2014-08-20ND
2014-11-06ND
2014-11-18ND
2015-02-24K003524002ND
2015-02-24K003525002ND
2015-05-19K016228002ND
2015-05-19K016227002ND
2015-08-18K032540002ND
2015-08-18K032541002ND
2015-11-18K045644002ND
2015-11-18K045645002ND
2016-02-09L003576002ND
2016-02-09L003577002ND
2016-05-25L016419002ND
2016-05-25L016421002ND
2016-08-16L031699002ND
2016-08-16L031698002ND
2016-11-21L046100002ND
2016-11-21L046099002ND
2017-02-22M004052002ND
2017-02-22M004053002ND
2017-04-031700887-01ND
2017-04-121704136-02ND
2017-04-121704135-02ND
2017-08-081712630-02ND
2019-05-141907975-02ND
2019-05-141907976-02ND
2019-08-191914813-02ND
2019-08-191914812-02ND
2019-11-131920743-02ND
2019-11-131920744-02ND