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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Lake Bruin Water District #1

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane 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)

60

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.56 ppb1610ND - 3.10 ppb
20152.64 ppb16161.06 ppb - 4.05 ppb
20162.88 ppb16161.96 ppb - 3.96 ppb
20171.24 ppb1612ND - 2.80 ppb
20180.313 ppb164ND - 1.30 ppb
20190.150 ppb162ND - 1.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-02-121278136ND
2014-02-121278135ND
2014-02-121278136ND
2014-02-121278135ND
2014-05-1413023053.01 ppb
2014-05-1413023062.76 ppb
2014-05-1413023062.76 ppb
2014-05-1413023053.01 ppb
2014-08-1413269883.10 ppb
2014-08-1413269892.47 ppb
2014-08-1413269892.47 ppb
2014-08-1413269883.10 ppb
2014-11-1713516431.11 ppb
2014-11-171351644ND
2014-11-171351644ND
2014-11-1713516431.11 ppb
2015-02-1713739441.06 ppb
2015-02-1713739452.08 ppb
2015-02-1713739452.08 ppb
2015-02-1713739441.06 ppb
2015-05-1913966873.49 ppb
2015-05-1913966883.39 ppb
2015-05-1913966883.39 ppb
2015-05-1913966873.49 ppb
2015-08-1814205534.05 ppb
2015-08-1814205522.47 ppb
2015-08-1814205534.05 ppb
2015-08-1814205522.47 ppb
2015-11-1714450992.65 ppb
2015-11-1714451001.95 ppb
2015-11-1714451001.95 ppb
2015-11-1714450992.65 ppb
2016-02-1714682952.35 ppb
2016-02-1714682962.75 ppb
2016-02-1714682962.75 ppb
2016-02-1714682952.35 ppb
2016-05-1714925023.17 ppb
2016-05-1714925013.96 ppb
2016-05-1714925023.17 ppb
2016-05-1714925013.96 ppb
2016-08-1615168123.32 ppb
2016-08-1615168133.16 ppb
2016-08-1615168133.16 ppb
2016-08-1615168123.32 ppb
2016-11-1415417301.96 ppb
2016-11-1415417312.34 ppb
2016-11-1415417312.34 ppb
2016-11-1415417301.96 ppb
2017-02-09352945480340.930 ppb
2017-02-09352945480331.000 ppb
2017-02-09352945480331.000 ppb
2017-02-09352945480340.930 ppb
2017-05-15353126420112.80 ppb
2017-05-15353126420112.80 ppb
2017-05-15353126420122.80 ppb
2017-05-15353126420122.80 ppb
2017-08-08353296300091.30 ppb
2017-08-08353296300101.10 ppb
2017-08-08353296300091.30 ppb
2017-08-08353296300101.10 ppb
2017-11-1435348365002ND
2017-11-1435348365001ND
2017-11-1435348365001ND
2017-11-1435348365002ND
2018-02-1635375145002ND
2018-02-1635375145001ND
2018-02-1635375145002ND
2018-02-1635375145001ND
2018-05-21353939250021.20 ppb
2018-05-21353939250021.20 ppb
2018-05-21353939250011.30 ppb
2018-05-21353939250011.30 ppb
2018-08-0135408795002ND
2018-08-0135408795001ND
2018-08-0135408795001ND
2018-08-0135408795002ND
2018-11-0735430445001ND
2018-11-0735430445002ND
2018-11-0735430445001ND
2018-11-0735430445002ND
2019-02-1135448423002ND
2019-02-1135448423001ND
2019-02-1135448423001ND
2019-02-1135448423002ND
2019-05-0135465891002ND
2019-05-0135465891002ND
2019-05-0135465891001ND
2019-05-0135465891001ND
2019-08-0135487175002ND
2019-08-01354871750011.20 ppb
2019-08-01354871750011.20 ppb
2019-08-0135487175002ND
2019-11-0435510917001ND
2019-11-0435510917002ND
2019-11-0435510917001ND
2019-11-0435510917002ND