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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Acorn Rural Water

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND80ND
2016ND100ND
2017ND40ND
2018ND10ND
2019ND10ND

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
2014-10-1414289009502ND
2014-10-1414289009602ND
2015-01-1315015004802ND
2015-01-1315015004902ND
2015-04-1515106013302ND
2015-04-1515106013402ND
2015-07-1515197002902ND
2015-07-1515197003002ND
2015-10-1215289007402ND
2015-10-1215289007302ND
2016-01-1316014003202ND
2016-01-1316014003302ND
2016-02-0816042002702ND
2016-02-0816042002802ND
2016-04-1116105001702ND
2016-04-1116105001602ND
2016-07-1116196002002ND
2016-07-1116196001902ND
2016-10-1016287004602ND
2016-10-1016287004502ND
2017-01-0917012002002ND
2017-01-0917012001902ND
2017-04-1117102006802ND
2017-04-1117102006902ND
2018-07-0918193000102ND
2019-07-1719199002602ND