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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Greenwood

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

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND130ND
2015ND100ND
2016ND100ND
2017ND100ND
2018ND100ND
2019ND110ND

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
2014-01-2814030005402ND
2014-01-2814030005302ND
2014-01-2814030005502ND
2014-04-2214114002302ND
2014-04-2214114002002ND
2014-04-2214114002402ND
2014-07-0214184005501ND
2014-07-2214205007502ND
2014-07-2214205007402ND
2014-07-2214205007602ND
2014-10-0814282016601ND
2014-11-2514330004902ND
2014-11-2514330004802ND
2015-03-1015071006302ND
2015-03-1015071006202ND
2015-05-1915141012302ND
2015-05-1915141012402ND
2015-07-0815191001409ND
2015-08-0415218009402ND
2015-08-0415218009502ND
2015-10-0615281007701ND
2015-11-1715322000202ND
2015-11-1715322000102ND
2016-02-0916042004002ND
2016-02-0916042003902ND
2016-05-1616140003102ND
2016-05-1616140003002ND
2016-07-0616189016402ND
2016-08-1616231003602ND
2016-08-1616231003502ND
2016-10-0416280010101ND
2016-11-1416321003002ND
2016-11-1416321003102ND
2017-02-0717039006402ND
2017-02-0717039006702ND
2017-05-0817130002402ND
2017-05-0817130002302ND
2017-07-0317187011901ND
2017-08-0817222005102ND
2017-08-0817222005002ND
2017-10-0317277001301ND
2017-11-0717313012502ND
2017-11-0717313012602ND
2018-02-0718040005402ND
2018-02-0718040005502ND
2018-04-3018123000202ND
2018-04-3018123000102ND
2018-07-0318186013009ND
2018-08-0818221005902ND
2018-08-0818221005802ND
2018-10-0218277000909ND
2018-10-2918305008202ND
2018-10-2918305008502ND
2019-01-2819031002002ND
2019-01-2819031001902ND
2019-04-2219115001202ND
2019-04-2219115001302ND
2019-05-0619128001802ND
2019-07-0819192006602ND
2019-07-2219206004902ND
2019-07-2219206005002ND
2019-10-0919283006801ND
2019-10-2119297002102ND
2019-10-2119297002002ND