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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

River Falls 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

 

33

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
2014ND70ND
2015ND40ND
2016ND60ND
2017ND100ND
2018ND30ND
2019ND30ND

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
2014-06-11796163ND
2014-06-11796157ND
2014-06-11796166ND
2014-06-11796169ND
2014-06-11796160ND
2014-07-09802001ND
2014-07-09802000ND
2015-09-24885690ND
2015-09-24885744ND
2015-09-24885743ND
2015-10-26890948ND
2016-03-17910824ND
2016-05-31923422ND
2016-09-13945512ND
2016-09-19946513ND
2016-09-19946514ND
2016-10-11952738ND
2017-03-07976543ND
2017-05-01986327ND
2017-05-02986335ND
2017-05-02986339ND
2017-05-02986331ND
2017-05-02986343ND
2017-07-271007195ND
2017-07-271007196ND
2017-08-021008493ND
2017-10-101023449ND
2018-06-051060415ND
2018-08-141073855ND
2018-08-141073856ND
2019-07-231136277ND
2019-07-231136276ND
2019-09-101146566ND