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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Great Waters At Reynolds Plantation

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)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
20160.217 ppb61ND - 1.30 ppb
2017ND10ND
20181.30 ppb111.30 ppb
2019ND70ND

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
2014-05-05AI39465ND
2014-05-05AI39464ND
2014-05-05AI39463ND
2014-05-05AI39462ND
2014-06-03AI42030ND
2015-03-18AI69317ND
2015-03-18AI69316ND
2015-03-18AI69315ND
2015-03-18AI69314ND
2015-08-31AI88163ND
2016-04-06AJ09535ND
2016-04-06AJ09537ND
2016-04-06AJ09536ND
2016-04-06AJ09534ND
2016-04-06AJ095331.30 ppb
2016-09-19AJ27649ND
2017-09-06AJ67137ND
2018-09-12AK008271.30 ppb
2019-07-30AK23894ND
2019-07-30AK23893ND
2019-07-30AK23892ND
2019-07-30AK23891ND
2019-08-21AK27478ND
2019-08-21AK27477ND
2019-09-09AK29605ND