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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Bellevue Waterworks

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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

 

98

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND180ND
20150.0169 ppb161ND - 0.270 ppb
20160.0550 ppb163ND - 0.340 ppb
2017ND160ND
20180.0525 ppb162ND - 0.440 ppb
2019ND160ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2014-01-084090789004-2ND
2014-01-084090789002-2ND
2014-01-084090789001-2ND
2014-01-084090789003-2ND
2014-04-094094418004-2ND
2014-04-094094418002-2ND
2014-04-094094418003-2ND
2014-04-094094418001-2ND
2014-04-154094725001-5ND
2014-04-154094721001-5ND
2014-07-104099514004-2ND
2014-07-104099514001-2ND
2014-07-104099514002-2ND
2014-07-104099514003-2ND
2014-10-0740104820002-2ND
2014-10-0740104820005-2ND
2014-10-0740104820006-2ND
2014-10-0740104820001-2ND
2015-01-0740109125002-2ND
2015-01-0740109125001-2ND
2015-01-0740109125003-2ND
2015-01-0740109125004-2ND
2015-04-0840112792002-2ND
2015-04-0840112792004-2ND
2015-04-0840112792003-2ND
2015-04-0840112792001-20.270 ppb
2015-07-0840117755004-2ND
2015-07-0840117755002-2ND
2015-07-0840117755001-2ND
2015-07-0840117755003-2ND
2015-10-0740122297002-2ND
2015-10-0740122297004-2ND
2015-10-0740122297001-2ND
2015-10-0740122297003-2ND
2016-01-1240127039004-2ND
2016-01-1240127039001-2ND
2016-01-1240127039002-2ND
2016-01-1240127039003-2ND
2016-04-1240130621001-2ND
2016-04-1240130621004-2ND
2016-04-1240130621003-2ND
2016-04-1240130621002-2ND
2016-07-1140135030004-2ND
2016-07-1140135030003-2ND
2016-07-1140135030002-2ND
2016-07-1140135030001-2ND
2016-10-0440139409004-20.340 ppb
2016-10-0440139409002-20.320 ppb
2016-10-0440139409001-2ND
2016-10-0440139409003-20.220 ppb
2017-01-1340144456003-2ND
2017-01-1340144456001-2ND
2017-01-1340144456004-2ND
2017-01-1340144456002-2ND
2017-04-0740147945004-2ND
2017-04-0740147945001-2ND
2017-04-0740147945003-2ND
2017-04-0740147945002-2ND
2017-07-0640152801002-2ND
2017-07-0640152801003-2ND
2017-07-0640152801-001ND
2017-07-0640152801004-2ND
2017-10-0940158239-002ND
2017-10-0940158239-001ND
2017-10-0940158239-004ND
2017-10-0940158239-003ND
2018-01-1140163350003-20.440 ppb
2018-01-1140163350001-20.400 ppb
2018-01-1140163350002-2ND
2018-01-1140163350004-2ND
2018-04-0940167178001-2ND
2018-04-0940167178002-2ND
2018-04-0940167178003-2ND
2018-04-0940167178004-2ND
2018-07-1240172360003-2ND
2018-07-1240172360002-2ND
2018-07-1240172360004-2ND
2018-07-1240172360001-2ND
2018-10-0440177004001-2ND
2018-10-0440177004002-2ND
2018-10-0440177004004-2ND
2018-10-0440177004003-2ND
2019-01-0840181736001-2ND
2019-01-0840181736004-2ND
2019-01-0840181736002-2ND
2019-01-0840181736003-2ND
2019-04-0940185480002-2ND
2019-04-0940185480004-2ND
2019-04-0940185480001-2ND
2019-04-0940185480003-2ND
2019-07-1040190944003-2ND
2019-07-1040190944001-2ND
2019-07-1040190944002-2ND
2019-07-1040190944004-2ND
2019-10-0940196831002-2ND
2019-10-0940196831004-2ND
2019-10-0940196831003-2ND
2019-10-0940196831001-2ND