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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Eau Claire 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.

MORE ABOUT THIS CONTAMINANT

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND30ND
2015ND30ND
2016ND50ND
2017ND60ND
2018ND60ND
2019ND50ND

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
2014-07-21804373ND
2014-07-21804376ND
2014-07-21804374ND
2015-07-16871767ND
2015-07-16871770ND
2015-07-16871769ND
2016-07-26935390ND
2016-07-26935393ND
2016-07-26935392ND
2016-09-01942711ND
2016-11-03957173ND
2017-02-21974479ND
2017-05-09987395ND
2017-07-111002950ND
2017-07-111002952ND
2017-07-111002953ND
2017-10-241026050ND
2018-03-141045099ND
2018-05-081054395ND
2018-08-291077023ND
2018-08-291077025ND
2018-09-191082009ND
2018-12-121097339ND
2019-02-131104865ND
2019-04-221116666ND
2019-07-161134673ND
2019-07-161134671ND
2019-07-161134672ND