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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Olympic View 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

 

97

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0375 ppb161ND - 0.600 ppb
20150.0350 ppb161ND - 0.560 ppb
20160.0869 ppb162ND - 0.820 ppb
20170.0438 ppb161ND - 0.700 ppb
20180.109 ppb173ND - 0.700 ppb
20190.128 ppb163ND - 0.847 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
2014-03-1304427ND
2014-03-1304425ND
2014-03-1304426ND
2014-03-1304424ND
2014-06-1010371ND
2014-06-1010373ND
2014-06-1010372ND
2014-06-1010370ND
2014-09-0816521ND
2014-09-0816519ND
2014-09-0816520ND
2014-09-08165220.600 ppb
2014-12-1001166ND
2014-12-1001168ND
2014-12-1001165ND
2014-12-1101167ND
2015-03-1065402ND
2015-03-1065401ND
2015-03-1065403ND
2015-03-10654040.560 ppb
2015-06-0934502ND
2015-06-0934501ND
2015-06-0934504ND
2015-06-0934503ND
2015-09-1096101ND
2015-09-1096103ND
2015-09-1096104ND
2015-09-1096102ND
2015-12-0867501ND
2015-12-0867504ND
2015-12-0867503ND
2015-12-0867502ND
2016-03-16ND
2016-03-16ND
2016-03-16ND
2016-03-16ND
2016-06-14ND
2016-06-14ND
2016-06-140.820 ppb
2016-06-14ND
2016-09-13ND
2016-09-13ND
2016-09-13ND
2016-09-130.570 ppb
2016-12-13ND
2016-12-13ND
2016-12-13ND
2016-12-13ND
2017-03-14ND
2017-03-14ND
2017-03-14ND
2017-03-14ND
2017-06-13ND
2017-06-13ND
2017-06-13ND
2017-06-13ND
2017-09-050.700 ppb
2017-09-05ND
2017-09-05ND
2017-09-05ND
2017-12-12ND
2017-12-12ND
2017-12-12ND
2017-12-12ND
2018-03-13ND
2018-03-13ND
2018-03-13ND
2018-03-13ND
2018-06-060.700 ppb
2018-06-12ND
2018-06-12ND
2018-06-120.530 ppb
2018-06-12ND
2018-09-110.630 ppb
2018-09-11ND
2018-09-11ND
2018-09-11ND
2018-12-11ND
2018-12-11ND
2018-12-11ND
2018-12-11ND
2019-03-12ND
2019-03-12ND
2019-03-12ND
2019-03-12ND
2019-06-11ND
2019-06-11ND
2019-06-11ND
2019-06-110.847 ppb
2019-09-11ND
2019-09-110.529 ppb
2019-09-11ND
2019-09-11ND
2019-12-10ND
2019-12-10ND
2019-12-100.668 ppb
2019-12-10ND