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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Seattle Public Utilities

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

 

291

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND480ND
20150.251 ppb498ND - 1.95 ppb
2016ND480ND
2017ND500ND
20180.0104 ppb481ND - 0.500 ppb
2019ND480ND

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
2014-02-0402160ND
2014-02-0402167ND
2014-02-0402162ND
2014-02-0402159ND
2014-02-0402168ND
2014-02-0402166ND
2014-02-0402163ND
2014-02-0402158ND
2014-02-0402164ND
2014-02-0402165ND
2014-02-0402161ND
2014-02-0402169ND
2014-05-0607982ND
2014-05-0607975ND
2014-05-0607974ND
2014-05-0607980ND
2014-05-0607979ND
2014-05-0607976ND
2014-05-0607981ND
2014-05-0607985ND
2014-05-0607983ND
2014-05-0607984ND
2014-05-0607977ND
2014-05-0607978ND
2014-08-0514159ND
2014-08-0514164ND
2014-08-0514163ND
2014-08-0514161ND
2014-08-0514162ND
2014-08-0514166ND
2014-08-0514167ND
2014-08-0514157ND
2014-08-0514156ND
2014-08-0514165ND
2014-08-0514160ND
2014-08-0514158ND
2014-11-0601109ND
2014-11-0601105ND
2014-11-0601106ND
2014-11-0601104ND
2014-11-0601108ND
2014-11-0601100ND
2014-11-0601110ND
2014-11-0601107ND
2014-11-0601103ND
2014-11-0601101ND
2014-11-0601102ND
2014-11-0601111ND
2015-02-0540512ND
2015-02-0540508ND
2015-02-0540507ND
2015-02-0540503ND
2015-02-0540510ND
2015-02-0540509ND
2015-02-0540501ND
2015-02-0540502ND
2015-02-0540504ND
2015-02-0540511ND
2015-02-0540505ND
2015-02-0540506ND
2015-05-0812012ND
2015-05-0812011ND
2015-05-0812010ND
2015-05-0812009ND
2015-05-0812008ND
2015-05-0812007ND
2015-05-0812006ND
2015-05-0812005ND
2015-05-0812004ND
2015-05-0812003ND
2015-05-0812002ND
2015-05-0812001ND
2015-08-0466312ND
2015-08-0466311ND
2015-08-0466310ND
2015-08-0466309ND
2015-08-0466308ND
2015-08-0466307ND
2015-08-0466306ND
2015-08-0466305ND
2015-08-0466304ND
2015-08-0466303ND
2015-08-0466302ND
2015-08-0466301ND
2015-08-1472501ND
2015-11-0544412ND
2015-11-0544411ND
2015-11-05444101.88 ppb
2015-11-0544409ND
2015-11-05444080.550 ppb
2015-11-0544407ND
2015-11-05444061.64 ppb
2015-11-05444051.21 ppb
2015-11-05444041.37 ppb
2015-11-05444031.86 ppb
2015-11-05444021.83 ppb
2015-11-05444011.95 ppb
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-08-03ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-14ND
2017-03-07ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-06-06ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-08-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-08ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-08-01ND
2018-11-06ND
2018-11-06ND
2018-11-060.500 ppb
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-02-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND