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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Tightsqueeze - (pcsa)

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.325 ppb41ND - 1.30 ppb
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-02-0492188623001-TTHMND
2014-04-0292195642001-THMND
2014-07-0292207618001-TTHM1.30 ppb
2014-10-2892223014002ND
2015-01-27460165-PACE ANALND
2015-04-30460165-PACE ANALND
2015-07-29460165-PACE ANALND
2015-10-27460165-PACE ANALND
2016-01-2792284250002ND
2016-04-2692295152002ND
2016-07-2692306370002ND
2016-11-2292320536002ND
2017-01-2492327343002ND
2017-04-2592337397002ND
2017-07-2592348906002ND
2017-10-2492360235002ND
2018-01-2392370378-TTHMND
2018-04-2592382215002ND
2018-07-2492392964002ND
2018-10-3092405265002ND
2019-01-2392414937002ND
2019-04-2492426571002ND
2019-07-3092439052002ND
2019-10-2392450760002ND