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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Seal Beach

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.

 

79

Samples

0

Samples exceeding legal limit (MCL)

47

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
20130.784 ppb2111ND - 2.43 ppb
20140.202 ppb122ND - 1.37 ppb
20151.59 ppb63ND - 4.21 ppb
20162.06 ppb1815ND - 4.16 ppb
20174.42 ppb1816ND - 11.2 ppb

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
2012-01-244417-002-0800ND
2012-01-244417-001-0820ND
2012-02-144417-009-0800ND
2012-05-094417-003-0740ND
2013-02-059469-803-08151.53 ppb
2013-02-059469-801-06200.600 ppb
2013-02-059469-802-07400.810 ppb
2013-02-059469-804-10251.63 ppb
2013-02-064417-002-0825ND
2013-02-074417-009-1410ND
2013-02-274417-001-0835ND
2013-05-079469-802-0750ND
2013-05-079469-804-0950ND
2013-05-079469-803-08101.01 ppb
2013-05-089469-801-1215ND
2013-08-069469-803-07101.88 ppb
2013-08-069469-801-06350.810 ppb
2013-08-069469-802-06502.34 ppb
2013-08-069469-804-08452.43 ppb
2013-10-304417-003-0800ND
2013-11-129469-801-0754ND
2013-11-129469-804-10201.77 ppb
2013-11-129469-803-08501.66 ppb
2013-11-129469-802-0820ND
2013-12-034417-003-0810ND
2014-01-304417-009-0955ND
2014-01-304417-001-0930ND
2014-01-304417-002-0900ND
2014-02-069469-804-1000ND
2014-02-069469-802-0930ND
2014-02-069469-801-0900ND
2014-02-069469-803-0945ND
2014-02-254417-003-0740ND
2014-04-089469-801-0750ND
2014-04-089469-802-0825ND
2014-04-089469-804-11151.37 ppb
2014-04-089469-803-08501.05 ppb
2015-01-204417-009-0805ND
2015-01-204417-002-0830ND
2015-11-039469-804-10004.21 ppb
2015-11-039469-802-0820ND
2015-11-039469-801-07552.17 ppb
2015-11-039469-803-08403.15 ppb
2016-01-274417-002-0930ND
2016-01-274417-009-0910ND
2016-02-029469-803-07352.82 ppb
2016-02-029469-802-07152.01 ppb
2016-02-029469-801-06551.59 ppb
2016-02-029469-804-08402.69 ppb
2016-05-039469-803-08302.39 ppb
2016-05-039469-804-09452.60 ppb
2016-05-039469-801-07001.14 ppb
2016-05-039469-802-07201.23 ppb
2016-08-029469-802-07054.16 ppb
2016-08-029469-803-07254.02 ppb
2016-08-029469-804-08453.88 ppb
2016-08-029469-801-06404.10 ppb
2016-11-019469-801-07300.639 ppb
2016-11-019469-804-10502.42 ppb
2016-11-019469-802-0755ND
2016-11-019469-803-09001.40 ppb
2017-01-124417-009-0835ND
2017-01-124417-002-0815ND
2017-02-079469-804-09352.57 ppb
2017-02-079469-803-08101.68 ppb
2017-02-079469-802-07500.987 ppb
2017-02-079469-801-07301.51 ppb
2017-05-019469-803-08312.11 ppb
2017-05-019469-801-07301.20 ppb
2017-05-019469-802-08050.811 ppb
2017-05-019469-804-10182.38 ppb
2017-07-319469-804-100011.2 ppb
2017-07-319469-801-07458.83 ppb
2017-07-319469-803-084510.9 ppb
2017-07-319469-802-081511.1 ppb
2017-11-019469-801-12506.15 ppb
2017-11-019469-804-14306.20 ppb
2017-11-019469-803-13255.85 ppb
2017-11-019469-802-13106.01 ppb