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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Hca Roan Filter Plant

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.

 

100

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND200ND
2013ND160ND
2014ND160ND
20150.0625 ppb162ND - 0.500 ppb
2016ND160ND
2017ND160ND

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
2012-01-30ND
2012-01-30ND
2012-01-3012020187ND
2012-01-3112020187ND
2012-02-2212021628ND
2012-02-2212021628ND
2012-02-2212021628ND
2012-02-2212021628ND
2012-04-0912040704ND
2012-04-0912040704ND
2012-04-0912040704ND
2012-04-0912040704ND
2012-07-1812072195ND
2012-07-1812072195ND
2012-07-1812072195ND
2012-07-1812072195ND
2012-10-2212101993-01ND
2012-10-2212101993-02ND
2012-10-2212101993-03ND
2012-10-2212101993-04ND
2013-01-1613011437-01ND
2013-01-1613011437-02ND
2013-01-1613011437-03ND
2013-01-1613011437-04ND
2013-04-1713042079-01ND
2013-04-1713042079-02ND
2013-04-1713042079-03ND
2013-04-1713042079-04ND
2013-07-08AA58177ND
2013-07-08AA58178ND
2013-07-08AA58179ND
2013-07-08AA58180ND
2013-11-20ND
2013-11-20ND
2013-11-20ND
2013-11-20ND
2014-02-2014021609-02ND
2014-02-2014021609-03ND
2014-02-2014021609-04ND
2014-02-2014021609-01ND
2014-05-2014052436-01ND
2014-05-2014052438-01ND
2014-05-2014052440-01ND
2014-05-2014052441-01ND
2014-08-2014082438-01ND
2014-08-2014082438-02ND
2014-08-2014082438-03ND
2014-08-2014082438-04ND
2014-11-2014112130-01ND
2014-11-2014112130-02ND
2014-11-2014112130-03ND
2014-11-2014112130-04ND
2015-02-1912413492ND
2015-02-1912413493ND
2015-02-1912413494ND
2015-02-1912413495ND
2015-05-2012763469ND
2015-05-2012763470ND
2015-05-2012763471ND
2015-05-2012763472ND
2015-08-1913147924ND
2015-08-1913147918ND
2015-08-19131479120.500 ppb
2015-08-19131479060.500 ppb
2015-11-1913526800ND
2015-11-1913526706ND
2015-11-1913526712ND
2015-11-1913526718ND
2016-02-2213881629ND
2016-02-2213881635ND
2016-02-2213881641ND
2016-02-2213881647ND
2016-05-1814266378ND
2016-05-1814266384ND
2016-05-1814266390ND
2016-05-1814266396ND
2016-08-1914925637ND
2016-08-1914925643ND
2016-08-1914925649ND
2016-08-1914925655ND
2016-11-1815240879ND
2016-11-1815240885ND
2016-11-1815240891ND
2016-11-1815240897ND
2017-02-2215669803ND
2017-02-2215669809ND
2017-02-2215669815ND
2017-02-2215669821ND
2017-05-1816273633ND
2017-05-1816273639ND
2017-05-1816273645ND
2017-05-1816273651ND
2017-08-2316742214ND
2017-08-2316742221ND
2017-08-2316742227ND
2017-08-2316742233ND
2017-11-2017037820ND
2017-11-2017037826ND
2017-11-2017037832ND
2017-11-2017037838ND