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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Harrison Waterworks

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

 

88

Samples

0

Samples exceeding legal limit (MCL)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.688 ppb169ND - 1.50 ppb
20150.338 ppb165ND - 1.10 ppb
2016ND120ND
2017ND160ND
2018ND120ND
2019ND160ND

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
2014-02-1714051006802ND
2014-02-1714051007402ND
2014-02-1714051006902ND
2014-02-1714051007002ND
2014-04-2814121003902ND
2014-04-28141210041021.000 ppb
2014-04-28141210040021.000 ppb
2014-04-2814121003802ND
2014-07-29142120007021.10 ppb
2014-07-29142120005021.10 ppb
2014-07-29142120006021.10 ppb
2014-07-2914212000802ND
2014-10-28143030080021.40 ppb
2014-10-28143030076021.40 ppb
2014-10-28143030081021.50 ppb
2014-10-28143030077021.40 ppb
2015-01-27150290094021.10 ppb
2015-01-2715029009202ND
2015-01-27150290089021.10 ppb
2015-01-27150290095021.10 ppb
2015-04-2815120006202ND
2015-04-28151200058021.000 ppb
2015-04-2815120005702ND
2015-04-28151200061021.10 ppb
2015-07-2815210000802ND
2015-07-2815210000702ND
2015-07-2815210000902ND
2015-07-2815210000602ND
2015-10-2615302004902ND
2015-10-2715302004702ND
2015-10-2715302005002ND
2015-10-2715302004802ND
2016-05-1716140012102ND
2016-05-1716140011702ND
2016-05-1716140011602ND
2016-05-1716140011802ND
2016-08-2316237001602ND
2016-08-2316237001302ND
2016-08-2316237001402ND
2016-08-2316237001502ND
2016-11-1516321010502ND
2016-11-1516321010402ND
2016-11-1516321010302ND
2016-11-1516321010602ND
2017-02-0617040001302ND
2017-02-0717040001102ND
2017-02-0717040001002ND
2017-02-0717040001202ND
2017-04-2517117003702ND
2017-04-2517117003902ND
2017-04-2517117003802ND
2017-04-2517117004002ND
2017-07-2517207002202ND
2017-07-2517207002502ND
2017-07-2517207002602ND
2017-07-2517207002102ND
2017-10-2417299005002ND
2017-10-2417299004602ND
2017-10-2417299005102ND
2017-10-2417299004902ND
2018-05-0718129001402ND
2018-05-0718129001002ND
2018-05-0718129001302ND
2018-05-0718129001502ND
2018-07-3118213007802ND
2018-07-3118213007902ND
2018-07-3118213007202ND
2018-07-3118213006902ND
2018-10-2918304000902ND
2018-10-2918304001102ND
2018-10-2918304001002ND
2018-10-2918304000302ND
2019-01-2919031008002ND
2019-01-2919031008102ND
2019-01-2919031007902ND
2019-01-2919031007802ND
2019-04-3019122006102ND
2019-04-3019122006402ND
2019-04-3019122006002ND
2019-04-3019122006502ND
2019-07-3019212007101ND
2019-07-3019212006301ND
2019-07-3019212006401ND
2019-07-3019212006201ND
2019-10-3019305001502ND
2019-10-3019305001302ND
2019-10-3019305001402ND
2019-10-3019305001202ND