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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Cedar Rapids Water Department

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

 

136

Samples

0

Samples exceeding legal limit (MCL)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.0294 ppb342ND - 0.500 ppb
20150.0733 ppb303ND - 1.10 ppb
20160.200 ppb186ND - 0.700 ppb
20170.178 ppb185ND - 0.700 ppb
20180.194 ppb185ND - 1.000 ppb
20190.311 ppb188ND - 1.000 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
2014-03-122039714ND
2014-03-122039715ND
2014-03-1220397160.500 ppb
2014-03-122039718ND
2014-03-122039720ND
2014-03-122039721ND
2014-03-122039722ND
2014-03-122039723ND
2014-06-182058249ND
2014-06-182058251ND
2014-06-182058252ND
2014-06-182058253ND
2014-06-182058254ND
2014-06-182058256ND
2014-06-182058257ND
2014-06-182058258ND
2014-09-102081001ND
2014-09-102081003ND
2014-09-102081005ND
2014-09-102081006ND
2014-09-102081007ND
2014-09-102081009ND
2014-09-102081010ND
2014-09-102081011ND
2014-10-082085398ND
2014-10-082085401ND
2014-12-032096911ND
2014-12-032096912ND
2014-12-032096913ND
2014-12-032096914ND
2014-12-032096915ND
2014-12-032096917ND
2014-12-032096918ND
2014-12-0320969190.500 ppb
2015-03-12OE2201120.600 ppb
2015-03-12OE220113ND
2015-03-12OE220114ND
2015-03-12OE220106ND
2015-03-12OE220107ND
2015-03-12OE220108ND
2015-03-12OE220105ND
2015-03-12OE220111ND
2015-06-17OE256656ND
2015-06-17OE256652ND
2015-06-17OE256655ND
2015-06-17OE256653ND
2015-06-17OE256650ND
2015-06-17OE256654ND
2015-06-17OE256651ND
2015-06-17OE256658ND
2015-09-16OE294129ND
2015-09-16OE294125ND
2015-09-16OE294127ND
2015-09-16OE294126ND
2015-09-16OE294130ND
2015-09-16OE294132ND
2015-09-16OE294131ND
2015-09-16OE294133ND
2015-10-06OE302401ND
2015-10-06OE3024051.10 ppb
2015-12-09OE325105ND
2015-12-09OE3251070.500 ppb
2015-12-09OE325109ND
2015-12-09OE325106ND
2016-03-08OE353815ND
2016-03-08OE353814ND
2016-03-08OE3538130.600 ppb
2016-03-08OE353812ND
2016-06-01OE3839630.500 ppb
2016-06-01OE383962ND
2016-06-01OE383964ND
2016-06-01OE383965ND
2016-09-07OE425340ND
2016-09-07OE425339ND
2016-09-07OE425338ND
2016-09-07OE425337ND
2016-10-17OE441633ND
2016-10-17OE441634ND
2016-12-07OE4593280.600 ppb
2016-12-07OE4593270.600 ppb
2016-12-07OE4593260.700 ppb
2016-12-07OE4593250.600 ppb
2017-03-08OE4885520.700 ppb
2017-03-08OE4885500.600 ppb
2017-03-08OE4885480.700 ppb
2017-03-08OE4885510.500 ppb
2017-06-05OE521329ND
2017-06-05OE521326ND
2017-06-05OE521324ND
2017-06-05OE521327ND
2017-09-06OE561488ND
2017-09-06OE561487ND
2017-09-06OE561485ND
2017-09-06OE561486ND
2017-11-20OE5923970.700 ppb
2017-11-20OE592396ND
2017-12-12OE600503ND
2017-12-12OE600502ND
2017-12-12OE600501ND
2017-12-12OE600500ND
2018-03-20OE635796ND
2018-03-20OE6357981.000 ppb
2018-03-20OE635799ND
2018-03-20OE635800ND
2018-06-11OE668499ND
2018-06-11OE668500ND
2018-06-11OE668503ND
2018-06-11OE668522ND
2018-09-12OE712114ND
2018-09-12OE712115ND
2018-09-12OE712116ND
2018-09-12OE712118ND
2018-11-06OE7362600.500 ppb
2018-11-06OE736261ND
2018-12-18OE7518140.700 ppb
2018-12-18OE7518160.700 ppb
2018-12-18OE751817ND
2018-12-18OE7518180.600 ppb
2019-03-05OE777388ND
2019-03-05OE777389ND
2019-03-05OE7773900.500 ppb
2019-03-05OE7773910.500 ppb
2019-06-04OE8161920.700 ppb
2019-06-04OE8161930.600 ppb
2019-06-04OE816194ND
2019-06-04OE816200ND
2019-09-09OE863071ND
2019-09-09OE863073ND
2019-09-09OE863074ND
2019-09-09OE863075ND
2019-11-19OE8956280.700 ppb
2019-11-19OE895629ND
2019-12-03OE900677ND
2019-12-03OE9006781.000 ppb
2019-12-03OE9006791.000 ppb
2019-12-03OE9006800.600 ppb