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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Carroll County

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)

57

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.20 ppb2015ND - 2.40 ppb
20150.947 ppb1710ND - 2.00 ppb
20160.771 ppb178ND - 2.10 ppb
20170.465 ppb208ND - 1.30 ppb
20180.700 ppb178ND - 2.20 ppb
20190.753 ppb178ND - 2.00 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
2014-02-06AI277041.40 ppb
2014-02-06AI277051.30 ppb
2014-02-06AI277061.10 ppb
2014-02-06AI277071.40 ppb
2014-02-18AI281760.740 ppb
2014-02-18AI28177ND
2014-05-07AI399841.20 ppb
2014-05-07AI39985ND
2014-05-07AI39986ND
2014-05-07AI399871.10 ppb
2014-05-15AI40669ND
2014-05-15AI40670ND
2014-08-06AI486452.00 ppb
2014-08-06AI486461.60 ppb
2014-08-06AI486471.80 ppb
2014-08-06AI486481.80 ppb
2014-11-05AI592332.10 ppb
2014-11-05AI592342.30 ppb
2014-11-05AI592351.70 ppb
2014-11-05AI592362.40 ppb
2015-02-03AI63966ND
2015-02-04AI64341ND
2015-02-04AI64342ND
2015-02-04AI64343ND
2015-02-04AI64344ND
2015-05-06AI766841.30 ppb
2015-05-06AI76685ND
2015-05-06AI76686ND
2015-05-06AI766871.10 ppb
2015-08-05AI855851.80 ppb
2015-08-05AI855861.90 ppb
2015-08-05AI855871.60 ppb
2015-08-05AI855882.00 ppb
2015-11-04AJ005631.80 ppb
2015-11-04AJ005641.50 ppb
2015-11-04AJ005651.20 ppb
2015-11-04AJ005661.90 ppb
2016-02-02AJ05496ND
2016-02-03AJ05952ND
2016-02-03AJ05953ND
2016-02-03AJ05954ND
2016-02-03AJ05955ND
2016-05-04AJ11684ND
2016-05-04AJ11685ND
2016-05-04AJ11686ND
2016-05-04AJ11687ND
2016-08-03AJ212651.90 ppb
2016-08-03AJ212661.90 ppb
2016-08-03AJ212671.50 ppb
2016-08-03AJ212682.10 ppb
2016-11-02AJ326831.50 ppb
2016-11-02AJ326841.50 ppb
2016-11-02AJ326851.20 ppb
2016-11-02AJ326861.50 ppb
2017-02-07AJ461601.30 ppb
2017-02-07AJ461611.30 ppb
2017-02-07AJ46162ND
2017-02-07AJ46163ND
2017-03-28AJ49069ND
2017-03-28AJ490700.890 ppb
2017-03-28AJ49071ND
2017-03-28AJ49072ND
2017-05-03AJ54809ND
2017-05-03AJ54810ND
2017-05-03AJ54811ND
2017-05-03AJ54812ND
2017-08-02AJ628651.10 ppb
2017-08-02AJ628661.000 ppb
2017-08-02AJ62867ND
2017-08-02AJ628681.10 ppb
2017-11-01AJ729151.30 ppb
2017-11-01AJ72916ND
2017-11-01AJ72917ND
2017-11-01AJ729181.30 ppb
2018-01-29AJ78039ND
2018-02-07AJ83589ND
2018-02-07AJ83590ND
2018-02-07AJ83591ND
2018-02-07AJ83592ND
2018-05-02AJ886531.30 ppb
2018-05-02AJ88654ND
2018-05-02AJ88655ND
2018-05-02AJ886561.000 ppb
2018-08-08AJ973582.20 ppb
2018-08-08AJ973591.70 ppb
2018-08-08AJ973601.20 ppb
2018-08-08AJ973611.80 ppb
2018-11-07AK056331.30 ppb
2018-11-07AK05634ND
2018-11-07AK05635ND
2018-11-07AK056361.40 ppb
2019-02-07AK10896ND
2019-02-07AK10897ND
2019-02-07AK10898ND
2019-02-07AK10899ND
2019-02-20AK11673ND
2019-05-08AK16952ND
2019-05-08AK16953ND
2019-05-08AK16954ND
2019-05-08AK16955ND
2019-08-07AK255171.80 ppb
2019-08-07AK255181.50 ppb
2019-08-07AK255191.20 ppb
2019-08-07AK255201.90 ppb
2019-11-06AK363392.00 ppb
2019-11-06AK363401.60 ppb
2019-11-06AK363411.000 ppb
2019-11-06AK363421.80 ppb