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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Fredericksburg

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

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
20150.131 ppb164ND - 0.600 ppb
20160.0688 ppb162ND - 0.600 ppb
2017ND160ND
2018ND160ND
2019ND160ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2014-03-10E131207343ND
2014-03-10E131207341ND
2014-03-10E131207339ND
2014-03-10E131207344ND
2014-06-09E140305479ND
2014-06-09E140305478ND
2014-06-09E140305477ND
2014-06-09E140305480ND
2014-09-30E140602428ND
2014-09-30E140602427ND
2014-09-30E140602433ND
2014-09-30E140602431ND
2014-12-08E140902954ND
2014-12-08E140902956ND
2014-12-08E140902955ND
2014-12-08E140902958ND
2015-03-09VA010-DCLSND
2015-03-09VA010-DCLSND
2015-03-09VA010-DCLSND
2015-03-09VA010-DCLSND
2015-06-08VA010-DCLSND
2015-06-08VA010-DCLSND
2015-06-08VA010-DCLSND
2015-06-08VA010-DCLSND
2015-09-08VA010-DCLS0.500 ppb
2015-09-08VA010-DCLS0.600 ppb
2015-09-08VA010-DCLS0.500 ppb
2015-09-08VA010-DCLS0.500 ppb
2015-12-07VA010-DCLSND
2015-12-07VA010-DCLSND
2015-12-07VA010-DCLSND
2015-12-07VA010-DCLSND
2016-02-08E151206787ND
2016-02-08E151206786ND
2016-02-08E151206781ND
2016-02-08E151206782ND
2016-05-09E160303915ND
2016-05-09E160303911ND
2016-05-09E160303917ND
2016-05-09E160303912ND
2016-08-15E1606068790.500 ppb
2016-08-15E1606068750.600 ppb
2016-08-15E160606876ND
2016-08-15E160606881ND
2016-11-14E160904784ND
2016-11-14E160904791ND
2016-11-14E160904785ND
2016-11-14E160904788ND
2017-02-14E161205587ND
2017-02-14E161205590ND
2017-02-14E161205592ND
2017-02-14E161205586ND
2017-05-15E170304826ND
2017-05-15E170304822ND
2017-05-15E170304827ND
2017-05-15E170304824ND
2017-08-22E170607041ND
2017-08-22E170607040ND
2017-08-22E170607042ND
2017-08-22E170607038ND
2017-11-28E170905175ND
2017-11-28E170905173ND
2017-11-28E170905169ND
2017-11-28E170905171ND
2018-02-12E171205712ND
2018-02-12E171205710ND
2018-02-12E171205707ND
2018-02-12E171205705ND
2018-06-11E180307593ND
2018-06-11E180307588ND
2018-06-11E180307590ND
2018-06-11E180307592ND
2018-08-13E180608344ND
2018-08-13E180608343ND
2018-08-13E180608339ND
2018-08-13E180608338ND
2018-11-13E181002916ND
2018-11-13E181002918ND
2018-11-13E181002921ND
2018-11-13E181002923ND
2019-02-19E190103648ND
2019-02-19E190103651ND
2019-02-19E190103652ND
2019-02-19E190103654ND
2019-05-20E190303099ND
2019-05-20E190303104ND
2019-05-20E190303103ND
2019-05-20E190303101ND
2019-08-21E190603743ND
2019-08-21E190603748ND
2019-08-21E190603746ND
2019-08-21E190603741ND
2019-11-18E191003687ND
2019-11-18E191003686ND
2019-11-18E191003682ND
2019-11-18E191003680ND