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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Bella Vista POA

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

51

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.82 ppb1613ND - 3.80 ppb
20151.13 ppb1612ND - 2.30 ppb
20160.981 ppb168ND - 3.00 ppb
20170.919 ppb169ND - 2.50 ppb
20180.725 ppb166ND - 2.40 ppb
20190.400 ppb123ND - 2.00 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
2014-01-30140310015021.000 ppb
2014-01-30140310014021.30 ppb
2014-01-30140310016021.20 ppb
2014-01-3014031001302ND
2014-04-2214114009102ND
2014-04-22141140090021.10 ppb
2014-04-22141140092021.20 ppb
2014-04-2214114008902ND
2014-07-22142050032021.80 ppb
2014-07-22142050031022.70 ppb
2014-07-22142050034022.00 ppb
2014-07-22142050033022.90 ppb
2014-10-29143040042023.80 ppb
2014-10-29143040040023.60 ppb
2014-10-29143040039023.10 ppb
2014-10-29143040041023.40 ppb
2015-01-27150290041021.70 ppb
2015-01-27150290030021.50 ppb
2015-01-27150290042021.90 ppb
2015-01-27150290040021.90 ppb
2015-04-28151200100021.10 ppb
2015-04-28151200103021.10 ppb
2015-04-2815120010102ND
2015-04-28151200102021.10 ppb
2015-07-29152120002021.30 ppb
2015-07-2915212000302ND
2015-07-29152120004021.20 ppb
2015-07-2915212000502ND
2015-10-22152960048021.000 ppb
2015-10-2215296004602ND
2015-10-22152960049022.30 ppb
2015-10-22152960047022.00 ppb
2016-01-2716029009602ND
2016-01-2716029009702ND
2016-01-2716029009402ND
2016-01-2716029009502ND
2016-04-27161190118021.40 ppb
2016-04-27161190115021.40 ppb
2016-04-2716119011602ND
2016-04-2716119011402ND
2016-07-27162100074022.00 ppb
2016-07-2716210007202ND
2016-07-2716210007302ND
2016-07-27162100078021.90 ppb
2016-10-25163010087023.00 ppb
2016-10-25163010086021.50 ppb
2016-10-25163010089023.00 ppb
2016-10-25163010088021.50 ppb
2017-01-2617027005602ND
2017-01-26170270055022.50 ppb
2017-01-26170270057022.40 ppb
2017-01-2617027005402ND
2017-04-19171100094021.10 ppb
2017-04-19171100092021.10 ppb
2017-04-19171100091021.60 ppb
2017-04-19171100093021.40 ppb
2017-07-1917201004002ND
2017-07-1917201003702ND
2017-07-1917201003602ND
2017-07-1917201003502ND
2017-10-17172920125021.10 ppb
2017-10-17172920127022.00 ppb
2017-10-1717292012402ND
2017-10-24172990054011.50 ppb
2018-01-23180250092021.80 ppb
2018-01-2318025009002ND
2018-01-23180250091022.00 ppb
2018-01-2318025008902ND
2018-04-2418116003802ND
2018-04-2418116003702ND
2018-04-2418116003602ND
2018-04-2418116003502ND
2018-07-2518207005702ND
2018-07-25182070058021.60 ppb
2018-07-2518207005602ND
2018-07-25182070059021.40 ppb
2018-11-2818332004501ND
2018-11-2818332004401ND
2018-11-28183320042012.40 ppb
2018-11-28183320043012.40 ppb
2019-01-2319024007202ND
2019-01-2319024007402ND
2019-01-2319024007302ND
2019-01-2319024007502ND
2019-04-1619108007802ND
2019-04-1619108008002ND
2019-04-1619108007902ND
2019-04-16191080081021.10 ppb
2019-07-1719198003202ND
2019-07-1719198003102ND
2019-07-17191980030021.70 ppb
2019-07-17191980029022.00 ppb