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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Henderson-Kerr Lake Reg Water

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.125 ppb161ND - 2.00 ppb
20150.206 ppb163ND - 1.10 ppb
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-02-1192189677002ND
2014-02-1192189677003ND
2014-02-1192189677004ND
2014-02-1192189677001ND
2014-05-1392201161001TTHND
2014-05-1392201161002TTHND
2014-05-1392201161003TTHND
2014-05-1392201161004TTHND
2014-08-1292213201001TTH2.00 ppb
2014-08-1292213201002TTHND
2014-08-1292213201003TTHND
2014-08-1292213201004TTHND
2014-11-1292225453003TTHND
2014-11-1292225453002TTHND
2014-11-1292225453001TTHND
2014-11-1392225453004TTHND
2015-02-10ND
2015-02-10ND
2015-02-10ND
2015-02-10ND
2015-05-12ND
2015-05-12ND
2015-05-12ND
2015-05-12ND
2015-08-111.10 ppb
2015-08-111.10 ppb
2015-08-111.10 ppb
2015-08-11ND
2015-11-10ND
2015-11-10ND
2015-11-10ND
2015-11-10ND
2016-02-0992285879001TTHND
2016-02-0992285879002TTHND
2016-02-0992285879003TTHND
2016-02-0992285879004TTHND
2016-05-1092297063001TTHND
2016-05-1092297063002TTHND
2016-05-1092297063003TTHND
2016-05-1092297063004TTHND
2016-08-0992308578004TTHND
2016-08-0992308578003TTHND
2016-08-0992308578002TTHND
2016-08-0992308578001TTHND
2016-11-0892318998003TTHND
2016-11-0892318998011TTHND
2016-11-0892318998006TTHND
2016-11-0892318998004TTHND
2017-02-1592330204004TTHND
2017-02-1592330204011TTHND
2017-02-1592330204007TTHND
2017-02-1592330204006TTHND
2017-05-0992340094003TTHND
2017-05-0992340094004TTHND
2017-05-0992340094001TTHND
2017-05-0992340094002TTHND
2017-08-0892350856011TTHND
2017-08-0892350856010TTHND
2017-08-0892350856008TTHND
2017-08-0892350856003TTHND
2017-11-1492363440001TTHND
2017-11-1492363440002TTHND
2017-11-1492363440005TTHND
2017-11-1492363440006TTHND
2018-02-1392373408008TTH ND
2018-02-1392373408005TTH ND
2018-02-1392373408004TTH ND
2018-02-1392373408001TTH ND
2018-05-0192383116004TTH ND
2018-05-0192383116001TTH ND
2018-05-0192383116002TTH ND
2018-05-0192383116003TTH ND
2018-08-0892395245004TTH ND
2018-08-0892395245003TTH ND
2018-08-0892395245002TTH ND
2018-08-0892395245001TTH ND
2018-11-0692406545003TTH ND
2018-11-0692406545007TTH ND
2018-11-0692406545008TTH ND
2018-11-0692406545011TTH ND
2019-02-0592416954001_3770ND
2019-02-0592416954002_3770ND
2019-02-0592416954003_3770ND
2019-02-0592416954004_3770ND
2019-05-0792428873001_3770ND
2019-05-0792428873004_3770ND
2019-05-0792428873003_3770ND
2019-05-0792428873002_3770ND
2019-08-0692440471004_3770ND
2019-08-0692440471008_3770ND
2019-08-0692440471005_3770ND
2019-08-0692440471001_3770ND
2019-11-0592452959004_3770ND
2019-11-0592452959003_3770ND
2019-11-0592452959002_3770ND
2019-11-0592452959001_3770ND