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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

City of Humble

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

 

121

Samples

0

Samples exceeding legal limit (MCL)

47

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.23 ppb1611ND - 2.80 ppb
20150.290 ppb214ND - 1.70 ppb
20160.810 ppb216ND - 11.0 ppb
20171.06 ppb218ND - 12.0 ppb
20180.681 ppb2110ND - 2.20 ppb
20190.662 ppb218ND - 4.50 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
2014-02-11AC42180ND
2014-02-11AC421901.40 ppb
2014-02-11AC421701.000 ppb
2014-02-11AC421812.10 ppb
2014-04-02AC49089ND
2014-04-02AC490901.90 ppb
2014-04-02AC490912.60 ppb
2014-04-02AC490942.80 ppb
2014-07-07AC589352.40 ppb
2014-07-07AC589331.20 ppb
2014-07-07AC589421.70 ppb
2014-07-07AC58941ND
2014-10-03AC688861.60 ppb
2014-10-03AC68899ND
2014-10-03AC68900ND
2014-10-03AC689201.000 ppb
2015-01-20AC76798ND
2015-01-20AC76800ND
2015-01-20AC76780ND
2015-01-20AC767841.40 ppb
2015-01-20AC76796ND
2015-01-20AC76943ND
2015-01-20AC76933ND
2015-01-20AC76931ND
2015-01-20AC76926ND
2015-04-10AC87958ND
2015-04-10AC879521.40 ppb
2015-04-10AC879541.70 ppb
2015-04-10AC879531.60 ppb
2015-07-01AC98203ND
2015-07-01AC98199ND
2015-07-01AC98192ND
2015-07-01AC98198ND
2015-10-05AD09401ND
2015-10-05AD09393ND
2015-10-05AD09400ND
2015-10-05AD09398ND
2016-01-21AD19309ND
2016-01-21AD193171.60 ppb
2016-01-21AD19315ND
2016-01-21AD1930711.0 ppb
2016-01-21AD19313ND
2016-01-21AD19241ND
2016-01-21AD19238ND
2016-01-21AD19233ND
2016-01-21AD192341.10 ppb
2016-04-08AD32545ND
2016-04-08AD32544ND
2016-04-08AD32529ND
2016-04-08AD32542ND
2016-07-08AD43573ND
2016-07-08AD43569ND
2016-07-08AD43572ND
2016-07-08AD435741.10 ppb
2016-10-07AD52791ND
2016-10-07AD52788ND
2016-10-07AD527901.10 ppb
2016-10-07AD527921.10 ppb
2017-01-05AD63263ND
2017-01-05AD632351.30 ppb
2017-01-05AD6323312.0 ppb
2017-01-05AD63231ND
2017-01-05AD63201ND
2017-01-05AD63202ND
2017-01-05AD63208ND
2017-01-05AD63209ND
2017-04-21AD806051.10 ppb
2017-04-21AD806081.10 ppb
2017-04-21AD806072.00 ppb
2017-04-21AD80606ND
2017-04-21AD80683ND
2017-07-13AD89263ND
2017-07-13AD892611.60 ppb
2017-07-13AD892622.00 ppb
2017-07-13AD89264ND
2017-10-13AE00788ND
2017-10-13AE007691.20 ppb
2017-10-13AE00784ND
2017-10-13AE00787ND
2018-01-19AE09539ND
2018-01-19AE095952.20 ppb
2018-01-19AE09579ND
2018-01-19AE09481ND
2018-01-19AE09491ND
2018-01-19AE094921.20 ppb
2018-01-19AE094901.90 ppb
2018-04-03AE21019ND
2018-04-03AE21021ND
2018-04-03AE20976ND
2018-04-03AE209731.000 ppb
2018-04-03AE209781.10 ppb
2018-04-03AE20977ND
2018-07-31AE35302ND
2018-07-31AE352931.50 ppb
2018-07-31AE352991.50 ppb
2018-07-31AE353011.50 ppb
2018-10-10AE43258ND
2018-10-10AE432531.10 ppb
2018-10-10AE432571.30 ppb
2018-10-10AE43260ND
2019-01-15AE498631.30 ppb
2019-01-15AE49853ND
2019-01-15AE49879ND
2019-01-15AE498734.50 ppb
2019-01-15AE49877ND
2019-01-15AE49795ND
2019-01-15AE497971.50 ppb
2019-01-15AE497981.70 ppb
2019-01-15AE49796ND
2019-04-04AE61187ND
2019-04-04AE611841.20 ppb
2019-04-04AE611851.20 ppb
2019-04-04AE61186ND
2019-08-16AE792621.20 ppb
2019-08-16AE79263ND
2019-08-16AE79264ND
2019-08-16AE792651.30 ppb
2019-10-01AE85303ND
2019-10-01AE85298ND
2019-10-01AE85308ND
2019-10-01AE85305ND