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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Lebanon

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

 

25

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.740 ppb21ND - 1.48 ppb
20150.405 ppb21ND - 0.810 ppb
20160.0856 ppb91ND - 0.770 ppb
20170.440 ppb21ND - 0.880 ppb
2018ND20ND
20190.310 ppb83ND - 0.920 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
2014-09-02AC33364ND
2014-09-02AC333631.48 ppb
2015-08-24AC57453ND
2015-08-24AC574520.810 ppb
2016-02-29AC67126ND
2016-02-29AC67122ND
2016-02-29AC67123ND
2016-02-29AC67124ND
2016-02-29AC67125ND
2016-02-29AC67127ND
2016-02-29AC67128ND
2016-07-28AC79874ND
2016-07-28AC798730.770 ppb
2017-08-24AD03469ND
2017-08-28AD034680.880 ppb
2018-08-20AD31246ND
2018-08-20AD31247ND
2019-03-04AD40137ND
2019-03-04AD40138ND
2019-03-04AD401420.690 ppb
2019-03-04AD401390.920 ppb
2019-03-04AD40140ND
2019-03-04AD40141ND
2019-08-22AD53978ND
2019-08-22AD539770.870 ppb