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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Dan River Water Inc

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

 

94

Samples

0

Samples exceeding legal limit (MCL)

60

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.60 ppb148ND - 17.0 ppb
20155.51 ppb1612ND - 21.0 ppb
20162.12 ppb1612ND - 7.20 ppb
20174.08 ppb16161.20 ppb - 6.60 ppb
20182.34 ppb165ND - 9.60 ppb
20191.52 ppb167ND - 7.40 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
2014-02-03921883510022.40 ppb
2014-02-03921883510032.40 ppb
2014-02-0392188351004ND
2014-02-03921883510012.20 ppb
2014-05-0592199767001DISND
2014-05-0592199767002DISND
2014-05-0592199767003DISND
2014-05-0592199767004DIS1.80 ppb
2014-08-0492211765001TTH17.0 ppb
2014-08-0492211765002TTHND
2014-11-0492223970007TTH3.80 ppb
2014-11-0492223970008TTH8.80 ppb
2014-11-0492223970003TTHND
2014-11-0492223970001TTH12.0 ppb
2015-02-026.40 ppb
2015-02-026.70 ppb
2015-02-02ND
2015-02-026.40 ppb
2015-05-041.80 ppb
2015-05-045.10 ppb
2015-05-041.80 ppb
2015-05-04ND
2015-08-0317.0 ppb
2015-08-035.70 ppb
2015-08-03ND
2015-08-0312.0 ppb
2015-11-092.00 ppb
2015-11-09ND
2015-11-092.30 ppb
2015-11-0921.0 ppb
2016-02-0192284798005TTH1.000 ppb
2016-02-0192284798006TTH3.50 ppb
2016-02-0192284798007TTH1.10 ppb
2016-02-0192284798008TTHND
2016-05-0392296089004TTHND
2016-05-0392296089003TTH1.50 ppb
2016-05-0392296089002TTHND
2016-05-0392296089001TTHND
2016-08-0192307126001TTH4.10 ppb
2016-08-0192307126002TTH2.80 ppb
2016-08-0192307126003TTH2.90 ppb
2016-08-0192307126004TTH2.30 ppb
2016-11-0492318526001TTH7.20 ppb
2016-11-0492318526002TTH2.60 ppb
2016-11-0492318526003TTH2.40 ppb
2016-11-0492318526004TTH2.50 ppb
2017-02-0992329367003TTH2.00 ppb
2017-02-0992329367001TTH5.30 ppb
2017-02-0992329367004TTH2.30 ppb
2017-02-0992329367005TTH4.40 ppb
2017-05-1592340581002TTH4.60 ppb
2017-05-1592340581003TTH4.70 ppb
2017-05-1592340581001TTH5.70 ppb
2017-05-1592340581004TTH4.90 ppb
2017-08-2192352238001TTH6.60 ppb
2017-08-2192352238002TTH5.90 ppb
2017-08-2192352238003TTH6.40 ppb
2017-08-2192352238004TTH5.00 ppb
2017-11-1392363061001TTH3.60 ppb
2017-11-1392363061002TTH1.30 ppb
2017-11-1392363061003TTH1.30 ppb
2017-11-1392363061004TTH1.20 ppb
2018-02-1292373033004TTH 9.10 ppb
2018-02-1292373033003TTH 9.60 ppb
2018-02-1292373033002TTH 7.60 ppb
2018-02-1292373033001TTH 9.60 ppb
2018-05-0792383676004TTH ND
2018-05-0792383676001TTH ND
2018-05-0792383676002TTH ND
2018-05-0792383676003TTH 1.50 ppb
2018-08-0692394553004TTH ND
2018-08-0692394553003TTH ND
2018-08-0692394553002TTH ND
2018-08-0692394553001TTH ND
2018-11-0592405940001TTH ND
2018-11-0592405940002TTH ND
2018-11-0592405940003TTH ND
2018-11-0592405940004TTH ND
2019-02-0492416334001_3770ND
2019-02-0492416334002_3770ND
2019-02-0492416334003_3770ND
2019-02-0492416334004_3770ND
2019-05-0692427980001_3770ND
2019-05-0692427980005_3770ND
2019-05-0692427980004_3770ND
2019-05-0692427980002_3770ND
2019-08-0592439952002_3770ND
2019-08-0592439952004_37701.30 ppb
2019-08-0592439952003_37702.20 ppb
2019-08-0592439952001_37701.30 ppb
2019-11-0492452111004_37704.60 ppb
2019-11-0492452111003_37703.30 ppb
2019-11-0492452111002_37707.40 ppb
2019-11-0492452111001_37704.20 ppb