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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Deerwood Subdivision

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

27

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
20180.123 ppb131ND - 1.60 ppb
20190.164 ppb141ND - 2.30 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2018-02-26LLH67791ND
2018-02-26LLH67793ND
2018-02-26LLH67792ND
2018-05-10LLH79900ND
2018-05-10LLH79901ND
2018-05-10LLH79909ND
2018-06-06LLH843791.60 ppb
2018-08-15LLH99376ND
2018-08-15LLH99363ND
2018-08-15LLH99375ND
2018-10-31LLI13468ND
2018-10-31LLI13469ND
2018-10-31LLI13480ND
2019-02-21LLI26628ND
2019-02-21LLI26625ND
2019-02-21LLI26627ND
2019-05-31LLI40256ND
2019-05-31LLI40266ND
2019-05-31LLI40265ND
2019-06-12LLI426692.30 ppb
2019-09-09LLI62407ND
2019-09-09LLI62404ND
2019-09-09LLI62406ND
2019-10-31LLI74074ND
2019-10-31LLI74079ND
2019-10-31LLI74073ND
2019-12-17LLI84105ND