Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Bromodichloromethane

City of Seal Beach

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

60

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
20135.55 ppb2116ND - 14.4 ppb
20143.64 ppb128ND - 9.72 ppb
20154.23 ppb64ND - 8.35 ppb
20165.61 ppb1816ND - 11.6 ppb
20173.80 ppb1816ND - 8.29 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2013-02-059469-803-08159.17 ppb
2013-02-059469-801-06201.53 ppb
2013-02-059469-802-07401.67 ppb
2013-02-059469-804-102510.3 ppb
2013-02-064417-002-0825ND
2013-02-074417-009-1410ND
2013-02-274417-001-0835ND
2013-05-079469-802-07505.28 ppb
2013-05-079469-804-09503.44 ppb
2013-05-079469-803-08103.82 ppb
2013-05-089469-801-12158.73 ppb
2013-08-069469-803-071010.2 ppb
2013-08-069469-801-063510.6 ppb
2013-08-069469-802-065014.4 ppb
2013-08-069469-804-084511.0 ppb
2013-10-304417-003-0800ND
2013-11-129469-801-07548.12 ppb
2013-11-129469-804-10207.22 ppb
2013-11-129469-803-08506.43 ppb
2013-11-129469-802-08204.70 ppb
2013-12-034417-003-0810ND
2014-01-304417-009-0955ND
2014-01-304417-001-0930ND
2014-01-304417-002-0900ND
2014-02-069469-804-10006.24 ppb
2014-02-069469-802-09304.58 ppb
2014-02-069469-801-09009.72 ppb
2014-02-069469-803-09454.72 ppb
2014-02-254417-003-0740ND
2014-04-089469-801-07508.06 ppb
2014-04-089469-802-08251.56 ppb
2014-04-089469-804-11154.96 ppb
2014-04-089469-803-08503.84 ppb
2015-01-204417-009-0805ND
2015-01-204417-002-0830ND
2015-11-039469-804-10008.35 ppb
2015-11-039469-802-08204.74 ppb
2015-11-039469-801-07558.03 ppb
2015-11-039469-803-08404.25 ppb
2016-01-274417-002-0930ND
2016-01-274417-009-0910ND
2016-02-029469-803-07356.15 ppb
2016-02-029469-802-07156.50 ppb
2016-02-029469-801-06559.91 ppb
2016-02-029469-804-08405.37 ppb
2016-05-039469-803-08306.35 ppb
2016-05-039469-804-09456.86 ppb
2016-05-039469-801-070011.6 ppb
2016-05-039469-802-07203.56 ppb
2016-08-029469-802-07058.99 ppb
2016-08-029469-803-07257.05 ppb
2016-08-029469-804-08457.36 ppb
2016-08-029469-801-06407.77 ppb
2016-11-019469-801-07301.22 ppb
2016-11-019469-804-10508.00 ppb
2016-11-019469-802-07550.746 ppb
2016-11-019469-803-09003.51 ppb
2017-01-124417-009-0835ND
2017-01-124417-002-0815ND
2017-02-079469-804-09355.71 ppb
2017-02-079469-803-08102.96 ppb
2017-02-079469-802-07501.78 ppb
2017-02-079469-801-07302.77 ppb
2017-05-019469-803-08317.13 ppb
2017-05-019469-801-07305.71 ppb
2017-05-019469-802-08052.01 ppb
2017-05-019469-804-10188.29 ppb
2017-07-319469-804-10004.34 ppb
2017-07-319469-801-07455.10 ppb
2017-07-319469-803-08453.71 ppb
2017-07-319469-802-08153.49 ppb
2017-11-019469-801-12503.81 ppb
2017-11-019469-804-14303.84 ppb
2017-11-019469-803-13253.86 ppb
2017-11-019469-802-13103.95 ppb