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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Shady Oaks Estates

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013N/A00N/A
2014ND30ND
20151.000 ppb41ND - 4.00 ppb
2016ND40ND
2017ND40ND

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
2012-06-07AB91933ND
2014-06-06AC56228ND
2014-06-06AC56288ND
2014-06-06AC56315ND
2015-03-12AC84133ND
2015-03-12AC841314.00 ppb
2015-06-11AC95776ND
2015-06-11AC95775ND
2016-01-22AD19679ND
2016-01-22AD19673ND
2016-07-27AD45926ND
2016-07-27AD45925ND
2017-02-09AD69992ND
2017-02-09AD69998ND
2017-05-17AD84595ND
2017-05-17AD84598ND