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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Chicago

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.

 

218

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND500ND
2013ND400ND
2014ND320ND
2015ND320ND
2016ND320ND
2017ND320ND

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
2012-01-24SA20867-02_01ND
2012-01-24SA20867-01_01ND
2012-06-13SF20002-03_01ND
2012-06-13SF20002-13_01ND
2012-06-13SF20002-06_01ND
2012-06-13SF20002-09_01ND
2012-06-13SF20002-12_01ND
2012-06-13SF20002-10_01ND
2012-06-13SF20002-01_01ND
2012-06-13SF20002-16_01ND
2012-06-13SF20002-07_01ND
2012-06-13SF20002-05_01ND
2012-06-13SF20002-02_01ND
2012-06-13SF20002-04_01ND
2012-06-13SF20002-08_01ND
2012-06-13SF20002-14_01ND
2012-06-13SF20002-15_01ND
2012-06-13SF20002-11_01ND
2012-09-12SI20556-04_01ND
2012-09-12SI20558-03_01ND
2012-09-12SI20553-02_01ND
2012-09-12SI20555-02_01ND
2012-09-12SI20555-03_01ND
2012-09-12SI20555-04_01ND
2012-09-12SI20556-02_01ND
2012-09-12SI20558-04_01ND
2012-09-12SI20553-03_01ND
2012-09-12SI20553-04_01ND
2012-09-12SI20556-01_01ND
2012-09-12SI20556-03_01ND
2012-09-12SI20553-01_01ND
2012-09-12SI20558-02_01ND
2012-09-12SI20558-01_01ND
2012-09-12SI20555-01_01ND
2012-12-12SL20441-01_01ND
2012-12-12SL20441-02_01ND
2012-12-12SL20441-03_01ND
2012-12-12SL20441-04_01ND
2012-12-12SL20441-05_01ND
2012-12-12SL20441-06_01ND
2012-12-12SL20441-07_01ND
2012-12-12SL20441-08_01ND
2012-12-12SL20441-09_01ND
2012-12-12SL20441-10_01ND
2012-12-12SL20441-11_01ND
2012-12-12SL20441-12_01ND
2012-12-12SL20441-13_01ND
2012-12-12SL20441-14_01ND
2012-12-12SL20441-15_01ND
2012-12-12SL20441-16_01ND
2013-03-13SC30378-01_01ND
2013-03-13SC30378-03_01ND
2013-03-13SC30378-05_01ND
2013-03-13SC30378-07_01ND
2013-03-13SC30378-09_01ND
2013-03-13SC30378-11_01ND
2013-03-13SC30378-13_01ND
2013-03-13SC30378-02_01ND
2013-03-13SC30378-04_01ND
2013-03-13SC30378-06_01ND
2013-03-13SC30378-08_01ND
2013-03-13SC30378-10_01ND
2013-03-13SC30378-12_01ND
2013-03-13SC30378-14_01ND
2013-03-13SC30378-15_01ND
2013-03-13SC30378-16_01ND
2013-06-12SF30764-01_01ND
2013-06-12SF30764-03_01ND
2013-06-12SF30764-04_01ND
2013-06-12SF30764-02_01ND
2013-06-12SF30761-01_01ND
2013-06-12SF30761-02_01ND
2013-06-12SF30761-03_01ND
2013-06-12SF30761-04_01ND
2013-09-10SI30422-01_01ND
2013-09-10SI30422-04_01ND
2013-09-10SI30422-03_01ND
2013-09-10SI30422-02_01ND
2013-09-10SI30420-01_01ND
2013-09-10SI30420-04_01ND
2013-09-10SI30420-03_01ND
2013-09-10SI30420-02_01ND
2013-12-10SL30348-01_01ND
2013-12-10SL30348-02_01ND
2013-12-10SL30348-03_01ND
2013-12-10SL30348-04_01ND
2013-12-10SL30349-01_01ND
2013-12-10SL30349-02_01ND
2013-12-10SL30349-03_01ND
2013-12-10SL30349-04_01ND
2014-03-11SC40245-01_01ND
2014-03-11SC40245-02_01ND
2014-03-11SC40245-03_01ND
2014-03-11SC40245-04_01ND
2014-03-11SC40246-01_01ND
2014-03-11SC40246-02_01ND
2014-03-11SC40246-03_01ND
2014-03-11SC40246-04_01ND
2014-06-10SF40499-01_01ND
2014-06-10SF40499-02_01ND
2014-06-10SF40499-03_01ND
2014-06-10SF40499-04_01ND
2014-06-10SF40499-05_01ND
2014-06-10SF40499-08_01ND
2014-06-10SF40499-07_01ND
2014-06-10SF40499-06_01ND
2014-09-09SI40440-01_01ND
2014-09-09SI40440-02_01ND
2014-09-09SI40440-03_01ND
2014-09-09SI40440-04_01ND
2014-09-09SI40470-01_01ND
2014-09-09SI40470-02_01ND
2014-09-09SI40470-03_01ND
2014-09-09SI40470-04_01ND
2014-12-09SL40306-01_01ND
2014-12-09SL40306-02_01ND
2014-12-09SL40306-03_01ND
2014-12-09SL40306-04_01ND
2014-12-09SL40305-01_01ND
2014-12-09SL40305-02_01ND
2014-12-09SL40305-03_01ND
2014-12-09SL40305-04_01ND
2015-03-10SC50297-01_01ND
2015-03-10SC50297-02_01ND
2015-03-10SC50297-03_01ND
2015-03-10SC50297-04_01ND
2015-03-10SC50298-01_01ND
2015-03-10SC50298-02_01ND
2015-03-10SC50298-03_01ND
2015-03-10SC50298-04_01ND
2015-06-09SF50508-01_01ND
2015-06-09SF50508-02_01ND
2015-06-09SF50508-03_01ND
2015-06-09SF50508-04_01ND
2015-06-09SF50515-01_01ND
2015-06-09SF50515-02_01ND
2015-06-09SF50515-03_01ND
2015-06-09SF50515-04_01ND
2015-09-08SI50398-01_01ND
2015-09-08SI50398-02_01ND
2015-09-08SI50398-03_01ND
2015-09-08SI50398-04_01ND
2015-09-08SI50397-01_01ND
2015-09-08SI50397-02_01ND
2015-09-08SI50397-03_01ND
2015-09-08SI50397-04_01ND
2015-12-08SL50257-01_01ND
2015-12-08SL50257-02_01ND
2015-12-08SL50257-03_01ND
2015-12-08SL50257-04_01ND
2015-12-08SL50258-01_01ND
2015-12-08SL50258-02_01ND
2015-12-08SL50258-03_01ND
2015-12-08SL50258-04_01ND
2016-03-0916C0300-01_01ND
2016-03-0916C0300-03_01ND
2016-03-0916C0300-04_01ND
2016-03-0916C0300-02_01ND
2016-03-0916C0297-01_01ND
2016-03-0916C0297-03_01ND
2016-03-0916C0297-04_01ND
2016-03-0916C0297-02_01ND
2016-06-1416F0674-01_01ND
2016-06-1416F0674-02_01ND
2016-06-1416F0674-03_01ND
2016-06-1416F0674-04_01ND
2016-06-1416F0672-01_01ND
2016-06-1416F0672-02_01ND
2016-06-1416F0672-03_01ND
2016-06-1416F0672-04_01ND
2016-09-0616I0160-01_01ND
2016-09-0616I0160-02_01ND
2016-09-0616I0160-03_01ND
2016-09-0616I0160-04_01ND
2016-09-1416I0569-01_01ND
2016-09-1416I0569-02_01ND
2016-09-1416I0569-03_01ND
2016-09-1416I0569-04_01ND
2016-12-0616L0160-01_01ND
2016-12-0616L0160-02_01ND
2016-12-0616L0160-03_01ND
2016-12-0616L0160-04_01ND
2016-12-0616L0163-01_01ND
2016-12-0616L0163-02_01ND
2016-12-0616L0163-03_01ND
2016-12-0616L0163-04_01ND
2017-03-0617C0264-01_01ND
2017-03-0617C0264-02_01ND
2017-03-0617C0264-03_01ND
2017-03-0617C0264-04_01ND
2017-03-0617C0264-05_01ND
2017-03-0617C0264-07_01ND
2017-03-0617C0264-06_01ND
2017-03-0617C0264-08_01ND
2017-06-0717F0351-01_01ND
2017-06-0717F0351-02_01ND
2017-06-0717F0351-03_01ND
2017-06-0717F0351-04_01ND
2017-06-0717F0351-05_01ND
2017-06-0717F0351-06_01ND
2017-06-0717F0351-07_01ND
2017-06-0717F0351-08_01ND
2017-09-0517I0082-01_01ND
2017-09-0517I0082-02_01ND
2017-09-0517I0082-03_01ND
2017-09-0517I0082-04_01ND
2017-09-0517I0081-01_01ND
2017-09-0517I0081-02_01ND
2017-09-0517I0081-03_01ND
2017-09-0517I0081-04_01ND
2017-12-0517L0095-01_01ND
2017-12-0517L0095-02_01ND
2017-12-0517L0095-03_01ND
2017-12-0517L0095-04_01ND
2017-12-0517L0092-01_01ND
2017-12-0517L0092-02_01ND
2017-12-0517L0092-03_01ND
2017-12-0517L0092-04_01ND