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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Hosston Mira Water System

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

54

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201453.3 ppb226ND - 239.0 ppb
20150.756 ppb162ND - 6.05 ppb
201610.1 ppb16160.450 ppb - 26.3 ppb
201774.5 ppb16162.40 ppb - 199.0 ppb
201825.1 ppb168ND - 145.0 ppb
20194.09 ppb1610ND - 17.4 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
2014-03-271288574ND
2014-03-271288575ND
2014-03-271288576ND
2014-03-271288574ND
2014-03-271288575ND
2014-03-271288576ND
2014-05-151301857ND
2014-05-151301858ND
2014-05-151301859ND
2014-05-151301857ND
2014-05-151301858ND
2014-05-151301859ND
2014-07-031315064228.0 ppb
2014-07-031315065239.0 ppb
2014-07-031315066119.0 ppb
2014-07-031315064228.0 ppb
2014-07-031315065239.0 ppb
2014-07-031315066119.0 ppb
2014-10-021339231ND
2014-10-021339232ND
2014-10-021339231ND
2014-10-021339232ND
2015-01-091363415ND
2015-01-091363416ND
2015-01-091363415ND
2015-01-091363416ND
2015-04-071384745ND
2015-04-071384746ND
2015-04-071384745ND
2015-04-071384746ND
2015-07-141410796ND
2015-07-1414107976.05 ppb
2015-07-141410796ND
2015-07-1414107976.05 ppb
2015-10-301440049ND
2015-10-301440050ND
2015-10-301440049ND
2015-10-301440050ND
2016-01-11145768026.3 ppb
2016-01-11145768120.9 ppb
2016-01-11145768026.3 ppb
2016-01-11145768120.9 ppb
2016-04-2114847584.64 ppb
2016-04-21148475919.6 ppb
2016-04-2114847584.64 ppb
2016-04-21148475919.6 ppb
2016-07-1515079182.43 ppb
2016-07-1515079195.41 ppb
2016-07-1515079182.43 ppb
2016-07-1515079195.41 ppb
2016-10-2715365320.450 ppb
2016-10-2715365331.28 ppb
2016-10-2715365320.450 ppb
2016-10-2715365331.28 ppb
2017-01-203529020400748.6 ppb
2017-01-203529020400810.2 ppb
2017-01-203529020400748.6 ppb
2017-01-203529020400810.2 ppb
2017-04-06353051840172.40 ppb
2017-04-06353051840187.00 ppb
2017-04-06353051840172.40 ppb
2017-04-06353051840187.00 ppb
2017-07-1335324317011147.0 ppb
2017-07-1335324317012199.0 ppb
2017-07-1335324317011147.0 ppb
2017-07-1335324317012199.0 ppb
2017-10-2035343431001138.0 ppb
2017-10-203534343100243.4 ppb
2017-10-2035343431001138.0 ppb
2017-10-203534343100243.4 ppb
2018-01-1935369362001ND
2018-01-1935369362002ND
2018-01-1935369362001ND
2018-01-1935369362002ND
2018-04-0535384646001145.0 ppb
2018-04-053538464600254.8 ppb
2018-04-0535384646001145.0 ppb
2018-04-053538464600254.8 ppb
2018-07-1235404368001ND
2018-07-1235404368002ND
2018-07-1235404368001ND
2018-07-1235404368002ND
2018-10-22354265200010.520 ppb
2018-10-22354265200020.450 ppb
2018-10-22354265200010.520 ppb
2018-10-22354265200020.450 ppb
2019-01-163544322500117.4 ppb
2019-01-16354432250025.10 ppb
2019-01-163544322500117.4 ppb
2019-01-16354432250025.10 ppb
2019-04-10354615260015.20 ppb
2019-04-10354615260024.30 ppb
2019-04-10354615260015.20 ppb
2019-04-10354615260024.30 ppb
2019-07-0835481358001ND
2019-07-0835481358002ND
2019-07-0835481358001ND
2019-07-0835481358002ND
2019-10-03355028490010.720 ppb
2019-10-0335502849002ND
2019-10-03355028490010.720 ppb
2019-10-0335502849002ND