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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

West Travis County Regional WS

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

83

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.60 ppb17172.90 ppb - 5.70 ppb
20152.64 ppb17171.000 ppb - 4.00 ppb
20160.324 ppb175ND - 1.20 ppb
20171.64 ppb17171.000 ppb - 2.30 ppb
20182.45 ppb17171.90 ppb - 3.10 ppb
20190.647 ppb1710ND - 1.20 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
2014-03-17AC471223.00 ppb
2014-03-17AC471253.50 ppb
2014-03-17AC471273.70 ppb
2014-03-17AC471263.60 ppb
2014-06-25AC580883.30 ppb
2014-06-25AC580823.50 ppb
2014-06-25AC580853.60 ppb
2014-06-25AC580833.30 ppb
2014-08-25AC650883.10 ppb
2014-08-25AC651213.00 ppb
2014-08-25AC651243.10 ppb
2014-08-25AC651223.00 ppb
2014-08-25AC651232.90 ppb
2014-12-02AC733223.20 ppb
2014-12-02AC733254.90 ppb
2014-12-02AC733244.80 ppb
2014-12-02AC733335.70 ppb
2015-03-16AC843973.60 ppb
2015-03-16AC843933.40 ppb
2015-03-16AC843923.40 ppb
2015-03-16AC843893.70 ppb
2015-05-19AC925331.60 ppb
2015-05-19AC925262.00 ppb
2015-05-19AC925272.20 ppb
2015-05-19AC925292.10 ppb
2015-08-20AD048781.80 ppb
2015-08-20AD048262.80 ppb
2015-08-20AD048243.50 ppb
2015-08-20AD048233.50 ppb
2015-08-20AD048254.00 ppb
2015-11-02AD121791.000 ppb
2015-11-02AD121631.90 ppb
2015-11-02AD121751.50 ppb
2015-11-02AD121842.80 ppb
2016-03-14AD284471.10 ppb
2016-03-14AD284481.20 ppb
2016-03-14AD284451.20 ppb
2016-03-14AD284431.000 ppb
2016-05-25AD38272ND
2016-05-25AD38224ND
2016-05-25AD38229ND
2016-05-25AD382771.000 ppb
2016-08-01AD46439ND
2016-08-01AD46411ND
2016-08-01AD46380ND
2016-08-01AD46382ND
2016-08-01AD46383ND
2016-10-25AD54578ND
2016-10-25AD54580ND
2016-10-25AD54579ND
2016-10-25AD54581ND
2017-03-13AD746181.40 ppb
2017-03-13AD746241.40 ppb
2017-03-13AD746191.60 ppb
2017-03-13AD746251.60 ppb
2017-06-07AD867511.10 ppb
2017-06-07AD867531.40 ppb
2017-06-07AD867501.60 ppb
2017-06-07AD867491.30 ppb
2017-08-23AD940011.000 ppb
2017-08-23AD939641.70 ppb
2017-08-23AD939652.30 ppb
2017-08-23AD939632.00 ppb
2017-08-23AD939662.10 ppb
2017-11-21AE055431.70 ppb
2017-11-21AE055451.80 ppb
2017-11-21AE055462.00 ppb
2017-11-21AE055441.80 ppb
2018-02-15AE140162.20 ppb
2018-02-15AE140073.00 ppb
2018-02-15AE140182.60 ppb
2018-02-15AE140172.70 ppb
2018-05-03AE249922.30 ppb
2018-05-03AE249982.40 ppb
2018-05-03AE250252.80 ppb
2018-05-03AE250002.30 ppb
2018-07-23AE341611.90 ppb
2018-07-23AE340753.10 ppb
2018-07-23AE340812.40 ppb
2018-07-23AE340742.90 ppb
2018-07-23AE341312.30 ppb
2018-10-04AE426712.10 ppb
2018-10-04AE426722.20 ppb
2018-10-04AE426732.30 ppb
2018-10-04AE426742.10 ppb
2019-01-23AE50883ND
2019-01-23AE508841.000 ppb
2019-01-23AE50885ND
2019-01-23AE50886ND
2019-04-30AE64065ND
2019-04-30AE640641.10 ppb
2019-04-30AE640631.000 ppb
2019-04-30AE640621.10 ppb
2019-08-21AE79918ND
2019-08-21AE797801.20 ppb
2019-08-21AE797841.20 ppb
2019-08-21AE797791.20 ppb
2019-08-21AE797781.10 ppb
2019-10-22AE871731.10 ppb
2019-10-22AE87171ND
2019-10-22AE87176ND
2019-10-22AE871781.000 ppb