Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Bromoform

Glendale 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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
20130.235 ppb440.190 ppb - 0.250 ppb
20140.314 ppb16160.190 ppb - 0.420 ppb
20150.270 ppb86ND - 0.500 ppb
20160.121 ppb84ND - 0.270 ppb
20170.159 ppb84ND - 0.390 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
2013-12-037611570.250 ppb
2013-12-037611610.190 ppb
2013-12-037611550.250 ppb
2013-12-037611560.250 ppb
2014-03-067734860.260 ppb
2014-03-067734820.260 ppb
2014-03-067734850.260 ppb
2014-03-067734840.300 ppb
2014-06-037941270.340 ppb
2014-06-037941250.370 ppb
2014-06-037941260.390 ppb
2014-06-037941240.400 ppb
2014-09-028149950.420 ppb
2014-09-028149970.390 ppb
2014-09-028149960.370 ppb
2014-09-028149980.360 ppb
2014-12-028335840.190 ppb
2014-12-028335850.260 ppb
2014-12-028335860.260 ppb
2014-12-028335830.200 ppb
2015-03-038460280.270 ppb
2015-03-038460270.250 ppb
2015-06-03863510ND
2015-06-03863509ND
2015-09-018801460.490 ppb
2015-09-018801470.500 ppb
2015-12-028961830.260 ppb
2015-12-028961840.390 ppb
2016-03-07908346ND
2016-03-079083450.210 ppb
2016-06-01924005ND
2016-06-01924004ND
2016-08-309425670.270 ppb
2016-08-309425660.260 ppb
2016-11-309623000.230 ppb
2016-11-30962301ND
2017-03-069761670.230 ppb
2017-03-069761680.260 ppb
2017-06-05995412ND
2017-06-05995411ND
2017-08-3010149400.390 ppb
2017-08-3010149390.390 ppb
2017-11-291031298ND
2017-11-291031297ND