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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Gum Springs Water Supply Corporation 1

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

 

59

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
2015ND100ND
2016ND100ND
2017ND100ND
2018ND100ND
2019ND100ND

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
2014-02-17Q1404798002ND
2014-02-17Q1404798001ND
2014-05-22Q1417600015ND
2014-05-22Q1417600014ND
2014-05-22Q1417600002ND
2014-08-15Q1437373002ND
2014-08-15Q1437373001ND
2014-11-10Q1455241002ND
2014-11-10Q1455241001ND
2015-02-19Q1506850002ND
2015-02-19Q1506850001ND
2015-04-15Q1514230002ND
2015-04-15Q1514230001ND
2015-08-13Q1532211005ND
2015-08-13Q1532211001ND
2015-08-13Q1532211007ND
2015-08-13Q1532211006ND
2015-12-09Q1549103002ND
2015-12-09Q1549103001ND
2016-03-03Q1609181002ND
2016-03-03Q1609181001ND
2016-03-03Q1609181005ND
2016-03-03Q1609181004ND
2016-06-21Q1625149002ND
2016-06-21Q1625149001ND
2016-09-16Q1638367002ND
2016-09-16Q1638367001ND
2016-11-18Q1650940002ND
2016-11-18Q1650940001ND
2017-03-09Q1710183019ND
2017-03-09Q1710183018ND
2017-03-09Q1710183004ND
2017-03-09Q1710183001ND
2017-05-09Q1718861002ND
2017-05-09Q1718861001ND
2017-08-03Q1732602002ND
2017-08-03Q1732602001ND
2017-11-27Q1760521002ND
2017-11-27Q1760521001ND
2018-02-27Q1808381004ND
2018-02-27Q1808381009ND
2018-02-27Q1808381001ND
2018-02-27Q1808381006ND
2018-05-24Q1821025002ND
2018-05-24Q1821025001ND
2018-08-21Q1833340001ND
2018-08-21Q1833340002ND
2018-12-06Q1849988002ND
2018-12-06Q1849988001ND
2019-03-13Q1910596002ND
2019-03-13Q1910596001ND
2019-05-13Q1923660002ND
2019-05-13Q1923660001ND
2019-07-11Q1944045010ND
2019-07-11Q1944045009ND
2019-07-11Q1944045003ND
2019-07-11Q1944045001ND
2019-12-04Q1979205001ND
2019-12-04Q1979205002ND