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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Lakeway MUD

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.

 

76

Samples

0

Samples exceeding legal limit (MCL)

59

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.05 ppb222.90 ppb - 3.20 ppb
20133.03 ppb662.69 ppb - 3.51 ppb
20143.88 ppb17172.60 ppb - 4.80 ppb
20153.06 ppb1711ND - 11.5 ppb
20160.706 ppb178ND - 2.20 ppb
20171.84 ppb1715ND - 3.50 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
2012-05-03AB888753.20 ppb
2012-09-14AC009522.90 ppb
2013-06-14Q13023340023.11 ppb
2013-09-04Q13065640013.11 ppb
2013-11-07Q13122510053.51 ppb
2013-11-07Q13122510062.85 ppb
2013-11-07Q13122510072.69 ppb
2013-11-07Q13122510082.91 ppb
2014-03-19AC477164.00 ppb
2014-03-19AC477174.10 ppb
2014-03-19AC476983.90 ppb
2014-03-19AC477004.20 ppb
2014-06-16AC569433.50 ppb
2014-06-16AC569402.60 ppb
2014-06-16AC569443.60 ppb
2014-06-16AC569323.40 ppb
2014-08-20AC646334.80 ppb
2014-08-20AC647013.90 ppb
2014-08-20AC647263.40 ppb
2014-08-20AC647004.50 ppb
2014-08-20AC647303.40 ppb
2014-11-20AC726694.30 ppb
2014-11-20AC726683.80 ppb
2014-11-20AC726664.20 ppb
2014-11-20AC726634.40 ppb
2015-03-10AC8345610.9 ppb
2015-03-10AC834785.60 ppb
2015-03-10AC834607.70 ppb
2015-03-10AC8345711.5 ppb
2015-05-18AC922953.40 ppb
2015-05-18AC922963.30 ppb
2015-05-18AC922933.00 ppb
2015-05-18AC922983.60 ppb
2015-09-10AD06526ND
2015-09-10AD06525ND
2015-09-10AD06528ND
2015-09-10AD06529ND
2015-09-10AD06618ND
2015-12-02AD15123ND
2015-12-02AD151181.000 ppb
2015-12-02AD151191.000 ppb
2015-12-02AD151201.10 ppb
2016-02-17AD238951.10 ppb
2016-02-17AD238991.20 ppb
2016-02-17AD23896ND
2016-02-17AD238981.000 ppb
2016-05-23AD37690ND
2016-05-23AD37688ND
2016-05-23AD37687ND
2016-05-23AD377151.20 ppb
2016-07-27AD45962ND
2016-07-27AD45963ND
2016-07-27AD45961ND
2016-07-27AD45957ND
2016-07-27AD46010ND
2016-11-07AD567911.70 ppb
2016-11-07AD567891.60 ppb
2016-11-07AD567922.00 ppb
2016-11-07AD567952.20 ppb
2017-01-26AD670901.40 ppb
2017-01-26AD671131.40 ppb
2017-01-26AD671091.70 ppb
2017-01-26AD671031.40 ppb
2017-04-25AD809271.10 ppb
2017-04-25AD80925ND
2017-04-25AD80928ND
2017-04-25AD809291.10 ppb
2017-08-31AD946231.20 ppb
2017-08-31AD946092.30 ppb
2017-08-31AD946062.30 ppb
2017-08-31AD946071.60 ppb
2017-08-31AD946102.20 ppb
2017-10-31AE028973.40 ppb
2017-10-31AE028903.20 ppb
2017-10-31AE028953.50 ppb
2017-10-31AE028963.50 ppb