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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Elizabeth City

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

 

105

Samples

0

Samples exceeding legal limit (MCL)

50

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.163 ppb162ND - 1.40 ppb
20151.12 ppb2416ND - 3.10 ppb
20160.488 ppb166ND - 1.90 ppb
20170.0625 ppb161ND - 1.000 ppb
20181.11 ppb1712ND - 2.40 ppb
20191.36 ppb1613ND - 2.30 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
2014-01-06921854270011.40 ppb
2014-01-0692185427002ND
2014-01-0692185427003ND
2014-01-0692185427004ND
2014-04-0792196508001DISND
2014-04-0792196509001DISND
2014-04-0792196510001DISND
2014-04-0792196511001DISND
2014-07-0892208495001DISND
2014-07-0892208495002DIS1.20 ppb
2014-07-0892208495003DISND
2014-07-0892208495004DISND
2014-10-0692220286003TTHND
2014-10-0692220286004TTHND
2014-10-0692220286001TTHND
2014-10-0692220286002TTHND
2015-01-08ND
2015-01-081.40 ppb
2015-01-08ND
2015-01-08ND
2015-04-06ND
2015-04-06ND
2015-04-06ND
2015-04-06ND
2015-07-063.10 ppb
2015-07-061.10 ppb
2015-07-06ND
2015-07-063.00 ppb
2015-10-051.20 ppb
2015-10-051.60 ppb
2015-10-051.80 ppb
2015-10-051.50 ppb
2015-10-051.20 ppb
2015-10-051.60 ppb
2015-10-051.80 ppb
2015-10-051.50 ppb
2015-10-051.20 ppb
2015-10-051.60 ppb
2015-10-051.80 ppb
2015-10-051.50 ppb
2016-01-0592282037001TTHND
2016-01-0592282037002TTH1.90 ppb
2016-01-0592282037003TTH1.10 ppb
2016-01-0592282037004TTHND
2016-04-0592292662001TTHND
2016-04-0592292662002TTH1.30 ppb
2016-04-0592292662003TTHND
2016-04-0592292662004TTH1.10 ppb
2016-07-1192304772001TTHND
2016-07-1192304772002TTH1.20 ppb
2016-07-1192304772003TTH1.20 ppb
2016-07-1192304772004TTHND
2016-10-1292315997001TTHND
2016-10-1292315997002TTHND
2016-10-1292315997003TTHND
2016-10-1292315997004TTHND
2017-01-1092325930001TTHND
2017-01-1092325930002TTHND
2017-01-1092325930003TTHND
2017-01-1092325930004TTHND
2017-04-1092336747001TTHND
2017-04-1092336747002TTHND
2017-04-1092336747003TTHND
2017-04-1092336747004TTH1.000 ppb
2017-07-1092347220001TTHND
2017-07-1092347220002TTHND
2017-07-1092347220003TTHND
2017-07-1092347220004TTHND
2017-10-1092358707001TTHND
2017-10-1092358707002TTHND
2017-10-1092358707003TTHND
2017-10-1092358707004TTHND
2018-01-2492370843001TTH 1.000 ppb
2018-01-2492370843002TTH 1.30 ppb
2018-01-2492370843003TTH 1.40 ppb
2018-01-2492370843004TTH 1.50 ppb
2018-04-2592382473001TTH 2.20 ppb
2018-04-2592382473002TTH 2.00 ppb
2018-04-2592382473003TTH 1.80 ppb
2018-04-2592382473004TTH 2.40 ppb
2018-07-1992392766001TTH ND
2018-07-1992392766002TTH ND
2018-07-1992392766003TTH ND
2018-07-1992392766004TTH 1.10 ppb
2018-07-3092393737001TTH ND
2018-10-1892404170001TTH 1.40 ppb
2018-10-1892404170002TTH 1.30 ppb
2018-10-1892404170003TTH 1.40 ppb
2018-10-1892404170004TTH ND
2019-01-0492412949001_37701.30 ppb
2019-01-0492412949002_37701.20 ppb
2019-01-0492412949003_37701.20 ppb
2019-01-0492412949004_37701.10 ppb
2019-04-1592425913001_37701.80 ppb
2019-04-1592425913002_37702.20 ppb
2019-04-1592425913003_37702.10 ppb
2019-04-1592425913004_37702.20 ppb
2019-07-1592436885001_3770ND
2019-07-1592436885002_3770ND
2019-07-1592436885003_3770ND
2019-07-1592436885004_37701.40 ppb
2019-10-1492449575001_37701.90 ppb
2019-10-1492449575002_37701.80 ppb
2019-10-1492449575003_37702.30 ppb
2019-10-1492449575004_37701.20 ppb