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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Rockingham, City of

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

 

68

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
2016ND80ND
2017ND120ND
2018ND160ND
2019ND160ND

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
2014-01-1037729_14-01348ND
2014-01-1037729_14-01338ND
2014-04-0237729_14-09352ND
2014-04-0237729_14-09351ND
2014-07-0237729_14-20137ND
2014-07-0237729_14-20138ND
2014-10-0837729_14-30667ND
2014-10-0837729_14-30668ND
2015-01-07ND
2015-01-07ND
2015-04-08ND
2015-04-08ND
2015-07-08ND
2015-07-08ND
2015-10-07ND
2015-10-07ND
2016-01-0637729_16-00473ND
2016-01-0637729_16-00475ND
2016-04-0637729_16-10737ND
2016-04-0637729_16-10734ND
2016-07-0737729_16-22195ND
2016-07-0737729_16-22196ND
2016-10-0537729_16-34921ND
2016-10-0537729_16-34923ND
2017-01-0437729_17-00363ND
2017-01-0437729_17-00364ND
2017-04-1037729_17-11835ND
2017-04-1037729_17-11836ND
2017-07-1037729_17-23309ND
2017-07-1037729_17-23310ND
2017-07-1037729_17-23311ND
2017-07-1037729_17-23312ND
2017-10-1037729_17-37969ND
2017-10-1037729_17-37968ND
2017-10-1037729_17-37966ND
2017-10-1037729_17-37967ND
2018-01-0937729_18-00829 ND
2018-01-0937729_18-00828 ND
2018-01-0937729_18-00825 ND
2018-01-0937729_18-00823 ND
2018-04-1037729_18-13836 ND
2018-04-1037729_18-13825 ND
2018-04-1037729_18-13834 ND
2018-04-1037729_18-13835 ND
2018-07-1037729_18-27736 ND
2018-07-1037729_18-27735 ND
2018-07-1037729_18-27734 ND
2018-07-1037729_18-27730 ND
2018-10-0937729_18-41996 ND
2018-10-0937729_18-41997 ND
2018-10-0937729_18-41998 ND
2018-10-0937729_18-41999 ND
2019-01-0837729_19-01152 ND
2019-01-0837729_19-01153 ND
2019-01-0837729_19-01154 ND
2019-01-0837729_19-01155 ND
2019-04-0937729_19-14470 ND
2019-04-0937729_19-14477 ND
2019-04-0937729_19-14476 ND
2019-04-0937729_19-14475 ND
2019-07-0937729_19-28485 ND
2019-07-0937729_19-28487 ND
2019-07-0937729_19-28486 ND
2019-07-0937729_19-28484 ND
2019-10-0737729_19-43309 ND
2019-10-0737729_19-43308 ND
2019-10-0737729_19-43307 ND
2019-10-0737729_19-43306 ND