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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Thomson-McDuffie County W&S Comm.

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

 

108

Samples

0

Samples exceeding legal limit (MCL)

70

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.34 ppb1812ND - 2.90 ppb
20151.48 ppb1812ND - 3.80 ppb
20161.23 ppb1814ND - 2.20 ppb
20170.931 ppb1810ND - 2.00 ppb
20181.22 ppb1813ND - 3.00 ppb
20190.780 ppb189ND - 2.20 ppb

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
2014-03-11AI35920ND
2014-03-11AI35921ND
2014-03-11AI35922ND
2014-03-11AI35923ND
2014-04-07AI37327ND
2014-04-07AI373280.950 ppb
2014-06-04AI423971.80 ppb
2014-06-04AI423981.50 ppb
2014-06-04AI42399ND
2014-06-04AI424001.30 ppb
2014-09-11AI536722.90 ppb
2014-09-11AI536732.60 ppb
2014-09-11AI536742.40 ppb
2014-09-11AI536752.60 ppb
2014-12-03AI607032.30 ppb
2014-12-03AI607041.70 ppb
2014-12-03AI607052.00 ppb
2014-12-03AI607062.10 ppb
2015-03-04AI663601.10 ppb
2015-03-04AI66361ND
2015-03-04AI66362ND
2015-03-04AI663631.10 ppb
2015-03-30AI69908ND
2015-03-31AI699070.900 ppb
2015-06-04AI789462.50 ppb
2015-06-04AI789471.50 ppb
2015-06-04AI78948ND
2015-06-04AI789492.50 ppb
2015-09-09AI892423.80 ppb
2015-09-09AI892433.60 ppb
2015-09-09AI892443.50 ppb
2015-09-09AI892453.40 ppb
2015-12-10AJ025311.40 ppb
2015-12-10AJ02532ND
2015-12-10AJ02533ND
2015-12-10AJ025341.40 ppb
2016-03-08AJ07815ND
2016-03-08AJ07816ND
2016-03-08AJ07817ND
2016-03-08AJ07818ND
2016-03-16AJ082980.800 ppb
2016-03-16AJ082990.690 ppb
2016-06-08AJ138411.50 ppb
2016-06-08AJ138421.20 ppb
2016-06-08AJ138431.30 ppb
2016-06-08AJ138441.40 ppb
2016-09-06AJ257002.10 ppb
2016-09-06AJ257012.00 ppb
2016-09-06AJ257021.90 ppb
2016-09-06AJ257031.80 ppb
2016-12-06AJ360512.20 ppb
2016-12-06AJ360521.70 ppb
2016-12-06AJ360531.80 ppb
2016-12-06AJ360541.70 ppb
2017-03-08AJ47772ND
2017-03-08AJ47773ND
2017-03-08AJ47774ND
2017-03-08AJ47775ND
2017-06-07AJ569700.760 ppb
2017-06-07AJ569712.00 ppb
2017-06-07AJ570441.70 ppb
2017-06-07AJ57045ND
2017-06-07AJ57046ND
2017-06-07AJ570471.70 ppb
2017-09-19AJ687192.00 ppb
2017-09-19AJ687201.80 ppb
2017-09-19AJ687211.80 ppb
2017-09-19AJ687221.60 ppb
2017-12-06AJ750961.60 ppb
2017-12-06AJ75097ND
2017-12-06AJ75098ND
2017-12-06AJ750991.80 ppb
2018-03-07AJ852131.10 ppb
2018-03-07AJ85214ND
2018-03-07AJ85215ND
2018-03-07AJ85216ND
2018-05-23AJ900950.700 ppb
2018-05-23AJ900961.000 ppb
2018-06-07AJ911411.20 ppb
2018-06-07AJ91142ND
2018-06-07AJ91143ND
2018-06-07AJ911441.50 ppb
2018-09-12AK009942.90 ppb
2018-09-12AK009952.70 ppb
2018-09-12AK009962.80 ppb
2018-09-12AK009973.00 ppb
2018-12-06AK075961.60 ppb
2018-12-06AK075971.20 ppb
2018-12-06AK075981.20 ppb
2018-12-06AK075991.10 ppb
2019-03-06AK12852ND
2019-03-06AK12853ND
2019-03-06AK12854ND
2019-03-06AK12855ND
2019-05-08AK168980.940 ppb
2019-05-08AK168991.000 ppb
2019-06-06AK191011.50 ppb
2019-06-06AK19102ND
2019-06-06AK19103ND
2019-06-06AK191042.10 ppb
2019-09-26AK330701.60 ppb
2019-09-26AK33071ND
2019-09-26AK330721.000 ppb
2019-09-26AK330732.00 ppb
2019-12-05AK377272.20 ppb
2019-12-05AK37728ND
2019-12-05AK37729ND
2019-12-05AK377301.70 ppb