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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Town of Vienna

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)

39

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.149 ppb164ND - 0.650 ppb
20150.402 ppb168ND - 1.87 ppb
20160.693 ppb1613ND - 1.25 ppb
20170.375 ppb167ND - 1.65 ppb
20180.0775 ppb162ND - 0.650 ppb
20190.196 ppb165ND - 0.710 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
2014-02-04FW13121009-01_THND
2014-02-04FW13121009-04_THND
2014-02-04FW13121009-02_THND
2014-02-04FW13121009-03_THND
2014-05-01FW14032109-02_THND
2014-05-01FW14032109-04_THND
2014-05-01FW14032109-03_THND
2014-05-01FW14032109-01_THND
2014-08-05FW14063013-02_TH0.650 ppb
2014-08-05FW14063013-03_THND
2014-08-05FW14063013-01_THND
2014-08-05FW14063013-04_THND
2014-10-27FW140923115-01_T0.620 ppb
2014-10-27FW140923115-04_TND
2014-10-27FW140923115-02_T0.540 ppb
2014-10-27FW140923115-03_T0.570 ppb
2015-02-0300125-FAIRFAX CO0.760 ppb
2015-02-0300125-FAIRFAX CO0.580 ppb
2015-02-0300125-FAIRFAX COND
2015-02-0300125-FAIRFAX COND
2015-05-0500125-FAIRFAX CO1.87 ppb
2015-05-0500125-FAIRFAX COND
2015-05-0500125-FAIRFAX COND
2015-05-0500125-FAIRFAX COND
2015-08-0400125-FAIRFAX CO0.750 ppb
2015-08-0400125-FAIRFAX CO0.530 ppb
2015-08-0400125-FAIRFAX CO0.610 ppb
2015-08-0400125-FAIRFAX CO0.740 ppb
2015-11-0300125-FAIRFAX CO0.590 ppb
2015-11-0300125-FAIRFAX COND
2015-11-0300125-FAIRFAX COND
2015-11-0300125-FAIRFAX COND
2016-02-02FW160107010-04_TND
2016-02-02FW160107010-02_T0.530 ppb
2016-02-02FW160107010-03_T0.540 ppb
2016-02-02FW160107010-01_T0.630 ppb
2016-05-03FW160310006-01_T1.01 ppb
2016-05-03FW160310006-02_T1.08 ppb
2016-05-03FW160310006-03_T1.13 ppb
2016-05-03FW160310006-04_T1.25 ppb
2016-08-02FW160616013-04_T0.970 ppb
2016-08-02FW160616013-01_T0.840 ppb
2016-08-02FW160616013-03_T0.800 ppb
2016-08-02FW160616013-02_T1.14 ppb
2016-11-01FW160915005-02_TND
2016-11-01FW160915005-04_T0.660 ppb
2016-11-01FW160915005-01_TND
2016-11-01FW160915005-03_T0.510 ppb
2017-02-01FW170105009-04_T1.65 ppb
2017-02-01FW170105009-03_TND
2017-02-01FW170105009-02_TND
2017-02-01FW170105009-01_TND
2017-05-02FW170227007-04_T0.540 ppb
2017-05-02FW170227007-01_TND
2017-05-02FW170227007-02_TND
2017-05-02FW170227007-03_TND
2017-08-01FW170628010-04_T0.660 ppb
2017-08-01FW170628010-01_TND
2017-08-01FW170628010-02_TND
2017-08-01FW170628010-03_TND
2017-11-01FW170919018-01_T0.570 ppb
2017-11-01FW170919018-03_T0.620 ppb
2017-11-01FW170919018-04_T0.980 ppb
2017-11-01FW170919018-02_T0.980 ppb
2018-02-01FW171219016-04_T0.650 ppb
2018-02-01FW171219016-03_TND
2018-02-01FW171219016-02_T0.590 ppb
2018-02-01FW171219016-01_TND
2018-05-01FW180314012-04_TND
2018-05-01FW180314012-01_TND
2018-05-01FW180314012-02_TND
2018-05-01FW180314012-03_TND
2018-08-01FW180614002-04_TND
2018-08-01FW180614002-03_TND
2018-08-01FW180614002-02_TND
2018-08-01FW180614002-01_TND
2018-11-01FW180926014-01_TND
2018-11-01FW180926014-02_TND
2018-11-01FW180926014-03_TND
2018-11-01FW180926014-04_TND
2019-02-05FW181217011-01_TND
2019-02-05FW181217011-02_TND
2019-02-05FW181217011-03_TND
2019-02-05FW181217011-04_TND
2019-05-01FW190307006-01_TND
2019-05-01FW190307006-04_TND
2019-05-01FW190307006-03_TND
2019-05-01FW190307006-02_TND
2019-08-01FW190621008-02_T0.710 ppb
2019-08-01FW190621008-04_T0.580 ppb
2019-08-01FW190621008-03_TND
2019-08-01FW190621008-01_T0.700 ppb
2019-11-05FW190923010-04_T0.630 ppb
2019-11-05FW190923010-03_TND
2019-11-05FW190923010-02_T0.520 ppb
2019-11-05FW190923010-01_TND