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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Covington

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

73

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.79 ppb1614ND - 2.70 ppb
20151.94 ppb16161.20 ppb - 3.10 ppb
20160.831 ppb167ND - 2.90 ppb
20171.29 ppb1614ND - 2.00 ppb
20181.74 ppb1614ND - 3.60 ppb
20190.639 ppb168ND - 1.69 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
2014-01-27AI272081.10 ppb
2014-01-27AI27207ND
2014-01-27AI27206ND
2014-01-27AI272051.30 ppb
2014-04-28AI389212.30 ppb
2014-04-28AI389202.00 ppb
2014-04-28AI389192.10 ppb
2014-04-28AI389182.50 ppb
2014-07-28AI470731.80 ppb
2014-07-28AI470722.60 ppb
2014-07-28AI470742.40 ppb
2014-07-28AI470752.30 ppb
2014-10-28AI585272.10 ppb
2014-10-28AI585262.00 ppb
2014-10-28AI585251.40 ppb
2014-10-28AI585242.70 ppb
2015-01-28AI637121.50 ppb
2015-01-28AI637111.30 ppb
2015-01-28AI637101.20 ppb
2015-01-28AI637091.70 ppb
2015-04-27AI756901.90 ppb
2015-04-27AI756911.90 ppb
2015-04-27AI756932.10 ppb
2015-04-27AI756921.90 ppb
2015-07-27AI843393.10 ppb
2015-07-27AI843382.60 ppb
2015-07-27AI843372.10 ppb
2015-07-27AI843362.90 ppb
2015-10-29AJ000522.10 ppb
2015-10-29AJ000511.30 ppb
2015-10-29AJ000501.20 ppb
2015-10-29AJ000492.30 ppb
2016-01-25AJ04944ND
2016-01-25AJ04943ND
2016-01-25AJ04945ND
2016-01-25AJ049461.30 ppb
2016-04-25AJ10807ND
2016-04-25AJ10806ND
2016-04-25AJ10805ND
2016-04-25AJ10804ND
2016-08-16AJ230492.20 ppb
2016-08-16AJ230482.20 ppb
2016-08-16AJ230471.60 ppb
2016-08-16AJ230462.90 ppb
2016-10-24AJ320431.50 ppb
2016-10-24AJ320461.60 ppb
2016-10-24AJ32045ND
2016-10-24AJ32044ND
2017-01-24AJ434501.50 ppb
2017-01-24AJ434491.20 ppb
2017-01-24AJ434481.10 ppb
2017-01-24AJ434471.50 ppb
2017-04-26AJ541101.60 ppb
2017-04-26AJ541091.30 ppb
2017-04-26AJ541081.40 ppb
2017-04-26AJ541071.50 ppb
2017-07-24AJ615781.40 ppb
2017-07-24AJ615772.00 ppb
2017-07-24AJ61579ND
2017-07-24AJ615801.90 ppb
2017-10-24AJ723441.70 ppb
2017-10-24AJ723431.10 ppb
2017-10-24AJ72342ND
2017-10-24AJ723411.50 ppb
2018-01-22AJ768921.30 ppb
2018-01-22AJ768911.10 ppb
2018-01-22AJ76890ND
2018-01-22AJ768891.30 ppb
2018-04-24AJ88082ND
2018-04-24AJ880831.30 ppb
2018-04-24AJ880851.70 ppb
2018-04-24AJ880841.30 ppb
2018-07-23AJ951332.60 ppb
2018-07-23AJ951322.30 ppb
2018-07-23AJ951312.40 ppb
2018-07-23AJ951302.00 ppb
2018-10-22AK045883.60 ppb
2018-10-22AK045872.50 ppb
2018-10-22AK045862.60 ppb
2018-10-22AK045851.90 ppb
2019-01-23AK10002ND
2019-01-23AK10001ND
2019-01-23AK10003ND
2019-01-23AK10004ND
2019-04-23AK15703ND
2019-04-23AK15702ND
2019-04-23AK15701ND
2019-04-23AK15700ND
2019-07-15192596-041.31 ppb
2019-07-15192596-031.42 ppb
2019-07-15192596-021.51 ppb
2019-07-15192596-010.940 ppb
2019-10-21196493-010.890 ppb
2019-10-21196493-041.69 ppb
2019-10-21196493-031.17 ppb
2019-10-21196493-021.30 ppb