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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Beacon Hill Water & Sewer District

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND160ND
2016ND160ND
2017ND160ND
20180.0388 ppb161ND - 0.620 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
2014-06-2463923ND
2014-06-2463921ND
2014-06-2463922ND
2014-06-2463924ND
2014-07-1773241ND
2014-07-1773242ND
2014-07-1773243ND
2014-07-1773244ND
2014-10-1312783ND
2014-10-1312784ND
2014-10-1312782ND
2014-10-1312781ND
2015-02-1916861ND
2015-02-1916864ND
2015-02-1916862ND
2015-02-1916863ND
2015-06-0158081ND
2015-06-0158083ND
2015-06-0158082ND
2015-06-0158084ND
2015-09-2104421ND
2015-09-2104423ND
2015-09-2104424ND
2015-09-2104422ND
2015-11-1631341ND
2015-11-1631342ND
2015-11-1631343ND
2015-11-1631344ND
2016-03-07ND
2016-03-07ND
2016-03-07ND
2016-03-07ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-08-08ND
2016-08-08ND
2016-08-08ND
2016-08-08ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2016-11-02ND
2017-03-01ND
2017-03-01ND
2017-03-01ND
2017-03-01ND
2017-06-27ND
2017-06-27ND
2017-06-27ND
2017-06-27ND
2017-09-14ND
2017-09-14ND
2017-09-14ND
2017-09-14ND
2017-12-04ND
2017-12-04ND
2017-12-04ND
2017-12-04ND
2018-03-07ND
2018-03-07ND
2018-03-07ND
2018-03-07ND
2018-06-12ND
2018-06-12ND
2018-06-12ND
2018-06-12ND
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-12-03ND
2018-12-03ND
2018-12-03ND
2018-12-030.620 ppb
2019-03-11ND
2019-03-11ND
2019-03-11ND
2019-03-11ND
2019-06-17ND
2019-06-17ND
2019-06-17ND
2019-06-17ND
2019-08-26ND
2019-08-26ND
2019-08-26ND
2019-08-26ND
2019-12-04ND
2019-12-04ND
2019-12-04ND
2019-12-04ND