Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Cross Valley Water 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

 

108

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.0588 ppb172ND - 0.500 ppb
20150.0688 ppb162ND - 0.600 ppb
20160.0313 ppb161ND - 0.500 ppb
20170.0938 ppb163ND - 0.500 ppb
20180.0238 ppb211ND - 0.500 ppb
20190.0273 ppb221ND - 0.600 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
2014-01-0801441ND
2014-01-0801440ND
2014-01-0801439ND
2014-01-0801438ND
2014-04-0114263ND
2014-04-0114264ND
2014-04-01142610.500 ppb
2014-04-0114262ND
2014-07-0228966ND
2014-07-0228965ND
2014-07-0228967ND
2014-07-0228968ND
2014-10-0745270ND
2014-10-0745273ND
2014-10-0745271ND
2014-10-07452720.500 ppb
2014-10-1446279ND
2015-01-0701100ND
2015-01-0701101ND
2015-01-0701098ND
2015-01-0701099ND
2015-04-0715129ND
2015-04-0715130ND
2015-04-0815131ND
2015-04-0815132ND
2015-07-2133592ND
2015-07-2133593ND
2015-07-21335900.500 ppb
2015-07-2133591ND
2015-10-0648844ND
2015-10-0648847ND
2015-10-06488450.600 ppb
2015-10-0648846ND
2016-01-20ND
2016-01-20ND
2016-01-20ND
2016-01-20ND
2016-04-06ND
2016-04-06ND
2016-04-06ND
2016-04-06ND
2016-07-12ND
2016-07-12ND
2016-07-12ND
2016-07-120.500 ppb
2016-10-03ND
2016-10-03ND
2016-10-03ND
2016-10-03ND
2017-01-09ND
2017-01-09ND
2017-01-090.500 ppb
2017-01-09ND
2017-04-050.500 ppb
2017-04-05ND
2017-04-05ND
2017-04-05ND
2017-07-06ND
2017-07-06ND
2017-07-06ND
2017-07-06ND
2017-10-02ND
2017-10-02ND
2017-10-02ND
2017-10-020.500 ppb
2018-01-04ND
2018-01-04ND
2018-01-04ND
2018-01-04ND
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-10-24ND
2018-10-240.500 ppb
2018-10-24ND
2018-10-24ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-07-03ND
2019-07-03ND
2019-07-03ND
2019-07-03ND
2019-09-04ND
2019-09-04ND
2019-09-04ND
2019-10-02ND
2019-10-020.600 ppb
2019-10-02ND
2019-10-02ND
2019-12-17ND
2019-12-17ND
2019-12-17ND