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EWG's Tap Water Database

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Dibromochloromethane

Cumming

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.

 

102

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND170ND
20110.119 ppb172ND - 1.50 ppb
20120.229 ppb173ND - 1.40 ppb
20130.475 ppb176ND - 1.80 ppb
20140.116 ppb172ND - 1.10 ppb
20150.128 ppb172ND - 1.60 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.1 ppb

The 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.

EPA Maximum Contaminant
Level Goal (MCLG)60.0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-03-09AG84364ND
2010-03-09AG84365ND
2010-03-09AG84366ND
2010-03-09AG84367ND
2010-03-09AG84374ND
2010-04-21AG87513ND
2010-04-21AG87514ND
2010-04-21AG87515ND
2010-04-21AG87516ND
2010-08-04AG95936ND
2010-08-04AG95937ND
2010-08-04AG95938ND
2010-08-04AG95939ND
2010-11-09AH10691ND
2010-11-09AH10692ND
2010-11-09AH10693ND
2010-11-09AH10694ND
2011-01-19AH17725ND
2011-01-19AH17726ND
2011-01-19AH17727ND
2011-01-19AH17728ND
2011-05-04AH28825ND
2011-05-04AH28826ND
2011-05-04AH28827ND
2011-05-04AH28828ND
2011-07-28AH354430.530 ppb
2011-08-03AH36011ND
2011-08-03AH36012ND
2011-08-03AH36013ND
2011-08-03AH360141.50 ppb
2011-11-07AH45755ND
2011-11-07AH45756ND
2011-11-07AH45757ND
2011-11-07AH45758ND
2012-01-25AH52236ND
2012-01-25AH52237ND
2012-01-25AH52238ND
2012-01-25AH52239ND
2012-03-08AH54598ND
2012-05-09AH61155ND
2012-05-09AH61156ND
2012-05-09AH61157ND
2012-05-09AH611581.10 ppb
2012-07-11AH69825ND
2012-07-11AH69826ND
2012-07-11AH69827ND
2012-07-11AH69828ND
2012-11-07AH836201.40 ppb
2012-11-07AH83621ND
2012-11-07AH83622ND
2012-11-07AH836231.40 ppb
2013-01-22AH877361.50 ppb
2013-01-22AH87737ND
2013-01-22AH87738ND
2013-01-22AH877391.50 ppb
2013-04-04AH982580.680 ppb
2013-04-24AH998101.80 ppb
2013-04-24AH99811ND
2013-04-24AH99812ND
2013-04-24AH998131.20 ppb
2013-08-07AI10028ND
2013-08-07AI10029ND
2013-08-07AI10030ND
2013-08-07AI100311.40 ppb
2013-11-06AI22443ND
2013-11-06AI22444ND
2013-11-06AI22445ND
2013-11-06AI22446ND
2014-02-05AI27628ND
2014-02-05AI27629ND
2014-02-05AI27630ND
2014-02-05AI27631ND
2014-03-10AI294450.880 ppb
2014-05-06AI39667ND
2014-05-06AI39668ND
2014-05-06AI39669ND
2014-05-06AI39670ND
2014-08-11AI49162ND
2014-08-11AI49163ND
2014-08-11AI49164ND
2014-08-11AI49165ND
2014-11-11AI59370ND
2014-11-11AI59371ND
2014-11-11AI59372ND
2014-11-11AI593731.10 ppb
2015-02-03AI64154ND
2015-02-03AI64155ND
2015-02-03AI64156ND
2015-02-03AI64157ND
2015-03-10AI686020.570 ppb
2015-05-06AI76573ND
2015-05-06AI76574ND
2015-05-06AI76575ND
2015-05-06AI76576ND
2015-08-04AI85423ND
2015-08-04AI85424ND
2015-08-04AI85425ND
2015-08-04AI854261.60 ppb
2015-11-17AJ01236ND
2015-11-17AJ01237ND
2015-11-17AJ01238ND
2015-11-17AJ01239ND