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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Eden

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)

58

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20144.24 ppb1611ND - 14.0 ppb
20155.38 ppb16161.30 ppb - 12.0 ppb
20160.994 ppb165ND - 4.00 ppb
20172.88 ppb16161.40 ppb - 4.70 ppb
20182.21 ppb164ND - 9.00 ppb
20190.875 ppb166ND - 2.80 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
2014-02-03921883330022.80 ppb
2014-02-03921883330031.40 ppb
2014-02-03921883330042.40 ppb
2014-02-03921883330012.50 ppb
2014-05-0192199448001DISND
2014-05-0192199448002DISND
2014-05-0192199448003DISND
2014-05-0192199448004DISND
2014-08-0592211903001TTH13.0 ppb
2014-08-0592211903002TTH14.0 ppb
2014-08-0592211903003TTH9.40 ppb
2014-08-0592211903004TTH11.0 ppb
2014-11-0492223894002TTHND
2014-11-0492223894004TTH3.60 ppb
2014-11-0492223894003TTH3.80 ppb
2014-11-0492223894001TTH3.90 ppb
2015-02-025.90 ppb
2015-02-025.70 ppb
2015-02-025.10 ppb
2015-02-025.60 ppb
2015-05-041.60 ppb
2015-05-041.70 ppb
2015-05-041.30 ppb
2015-05-041.70 ppb
2015-08-0411.0 ppb
2015-08-0412.0 ppb
2015-08-0412.0 ppb
2015-08-0412.0 ppb
2015-11-032.80 ppb
2015-11-032.60 ppb
2015-11-032.60 ppb
2015-11-032.50 ppb
2016-02-0292284970001TTHND
2016-02-0292284970002TTHND
2016-02-0292284970003TTHND
2016-02-0292284970004TTHND
2016-05-0392295997004TTHND
2016-05-0392295997003TTHND
2016-05-0392295997002TTHND
2016-05-0392295997001TTHND
2016-08-0492307615001TTH3.40 ppb
2016-08-0492307615002TTH4.00 ppb
2016-08-0492307615003TTH2.80 ppb
2016-08-0492307615004TTH3.60 ppb
2016-11-0292318131001TTHND
2016-11-0292318131002TTHND
2016-11-0292318131003TTHND
2016-11-0292318131004TTH2.10 ppb
2017-02-0192328280004TTH3.20 ppb
2017-02-0192328280003TTH3.90 ppb
2017-02-0192328280002TTH4.00 ppb
2017-02-0192328280001TTH3.40 ppb
2017-05-0392339176001TTH2.00 ppb
2017-05-0392339176003TTH1.90 ppb
2017-05-0392339176002TTH2.40 ppb
2017-05-0392339176004TTH2.20 ppb
2017-08-0292349789001TTH4.30 ppb
2017-08-0292349789002TTH4.70 ppb
2017-08-0292349789003TTH3.80 ppb
2017-08-0292349789004TTH4.50 ppb
2017-11-0192361492001TTH1.50 ppb
2017-11-0192361492002TTH1.40 ppb
2017-11-0192361492003TTH1.50 ppb
2017-11-0192361492004TTH1.40 ppb
2018-02-0692372084004TTH 8.60 ppb
2018-02-0692372084003TTH 9.00 ppb
2018-02-0692372084002TTH 9.00 ppb
2018-02-0692372084001TTH 8.80 ppb
2018-05-0292383118004TTH ND
2018-05-0292383118001TTH ND
2018-05-0292383118002TTH ND
2018-05-0292383118003TTH ND
2018-08-0792394678004TTH ND
2018-08-0792394678003TTH ND
2018-08-0792394678002TTH ND
2018-08-2392396866001TTH ND
2018-11-0192405596001TTH ND
2018-11-0192405596002TTH ND
2018-11-0192405596003TTH ND
2018-11-0192405596004TTH ND
2019-02-0492416286001_3770ND
2019-02-0492416286002_3770ND
2019-02-0492416286003_3770ND
2019-02-0492416286004_3770ND
2019-05-0192427509001_3770ND
2019-05-0192427509004_3770ND
2019-05-0192427509003_3770ND
2019-05-0192427509002_3770ND
2019-08-0192439513002_37701.60 ppb
2019-08-0192439513004_3770ND
2019-08-0192439513003_3770ND
2019-08-0192439513001_37702.70 ppb
2019-11-0492452118004_37702.10 ppb
2019-11-0492452118003_37702.80 ppb
2019-11-0492452118002_37702.50 ppb
2019-11-0492452118001_37702.30 ppb