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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Conway County Regional Water District

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

35

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.42 ppb17170.590 ppb - 1.80 ppb
20150.703 ppb1911ND - 1.80 ppb
20160.108 ppb131ND - 1.40 ppb
20170.161 ppb173ND - 1.10 ppb
20180.204 ppb133ND - 1.10 ppb
2019ND130ND

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
2014-01-28140300093010.590 ppb
2014-02-19140510086011.10 ppb
2014-02-19140510085011.60 ppb
2014-02-19140510089011.60 ppb
2014-02-19140510063011.50 ppb
2014-04-15141070101021.60 ppb
2014-04-15141070097021.80 ppb
2014-04-15141070100021.20 ppb
2014-04-15141070102021.40 ppb
2014-07-28142100011021.30 ppb
2014-07-28142100007021.30 ppb
2014-07-28142100010021.40 ppb
2014-07-28142100012021.60 ppb
2014-10-21142950029021.70 ppb
2014-10-21142950026021.60 ppb
2014-10-21142950030021.70 ppb
2014-10-21142950025021.10 ppb
2015-01-20150220042021.40 ppb
2015-01-20150220031090.940 ppb
2015-01-20150220040021.30 ppb
2015-01-20150220045021.80 ppb
2015-01-20150220031031.03 ppb
2015-01-20150220041021.60 ppb
2015-04-2015113000302ND
2015-04-20151130011030.786 ppb
2015-04-20151130007021.20 ppb
2015-04-20151130008021.10 ppb
2015-04-2015113000402ND
2015-07-2015203000302ND
2015-07-2015203000802ND
2015-07-2015203000402ND
2015-07-2015203000702ND
2015-10-1315289004202ND
2015-10-13152890045021.20 ppb
2015-10-13152890039021.000 ppb
2015-10-1315289003802ND
2016-01-1916025005201ND
2016-04-1916112011901ND
2016-04-1916112011802ND
2016-04-1916112011702ND
2016-04-1916112011401ND
2016-07-1816204000602ND
2016-07-1816204000902ND
2016-07-1816204001002ND
2016-07-1816204000502ND
2016-10-1816294006402ND
2016-10-18162940065021.40 ppb
2016-10-1816294006302ND
2016-10-1816294006002ND
2017-01-17170190071010.530 ppb
2017-01-1717019007002ND
2017-01-1717019006502ND
2017-01-1717019006602ND
2017-01-1717019006902ND
2017-05-11171310049021.10 ppb
2017-05-1117131005002ND
2017-05-1117131004602ND
2017-05-1117131004502ND
2017-08-0717222008602ND
2017-08-0717222009002ND
2017-08-07172220085021.10 ppb
2017-08-0717222008702ND
2017-11-1417320006002ND
2017-11-1417320006502ND
2017-11-1417320006102ND
2017-11-1417320006402ND
2018-01-17180180032021.10 ppb
2018-01-1718018002902ND
2018-01-17180180033021.000 ppb
2018-01-1718018002802ND
2018-04-1718109001602ND
2018-04-1718109002202ND
2018-04-1718109002902ND
2018-04-1718109001702ND
2018-05-22181440004030.553 ppb
2018-07-1718200005202ND
2018-07-1718200004802ND
2018-07-1718200004702ND
2018-07-1718200005102ND
2019-02-0519038008801ND
2019-02-1319045000502ND
2019-02-1319045000102ND
2019-02-1319045000602ND
2019-02-1319045000202ND
2019-04-1519108001702ND
2019-04-1519108001802ND
2019-04-1519108001602ND
2019-04-1519108001902ND
2019-07-1719199005202ND
2019-07-1719199005302ND
2019-07-1719199005102ND
2019-07-1719199005002ND