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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Tarrytown Water Supply

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

 

84

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
20140.264 ppb164ND - 1.11 ppb
2015ND800ND
20160.0313 ppb161ND - 0.500 ppb
20170.0375 ppb161ND - 0.600 ppb
20180.0250 ppb201ND - 0.500 ppb
2019ND160ND

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
2014-02-20420-75095-4-DBP2ND
2014-02-20420-75095-3-DBP2ND
2014-02-20420-75095-1-DBP2ND
2014-02-20420-75095-2-DBP2ND
2014-05-22420-78046-4-DBP21.10 ppb
2014-05-22420-78046-3-DBP21.11 ppb
2014-05-22420-78046-1-DBP21.02 ppb
2014-05-22420-78046-2-DBP20.995 ppb
2014-08-21420-81566-1-DBP2ND
2014-08-21420-81449-2-DBP2ND
2014-08-21420-81449-3-DBP2ND
2014-08-21420-81449-1-DBP2ND
2014-11-143140227-DBP2ND
2014-11-143140228-DBP2ND
2014-11-143140229-DBP2ND
2014-11-143140230-DBP2ND
2016-02-113399364-69-DBP2ND
2016-02-113399365-70-DBP2ND
2016-02-113399367-72-DBP2ND
2016-02-113399366-71-DBP2ND
2016-05-103627104DBP2ND
2016-05-103627103DBP2ND
2016-05-103627102DBP2ND
2016-05-103627101DBP2ND
2016-08-103518484-88-DBP2ND
2016-08-103518483-87-DBP2ND
2016-08-103518482-86-DBP2ND
2016-08-103518481-85-DBP2ND
2016-11-073581327-23-DBP20.500 ppb
2016-11-073581326-22-DBP2ND
2016-11-073581325-21-DBP2ND
2016-11-073581328-24-DBP2ND
2017-02-083634472-76-DBP2ND
2017-02-083634471-75-DBP20.600 ppb
2017-02-083634474-78-DBP2ND
2017-02-083634473-77-DBP2ND
2017-05-113693074-78-DBP2ND
2017-05-113693077-81-DBP2ND
2017-05-113693076-80-DBP2ND
2017-05-113693075-79-DBP2ND
2017-08-083751049-53-DBP2ND
2017-08-083751050-54-DBP2ND
2017-08-083751051-55-DBP2ND
2017-08-103751052-56-DBP2ND
2017-11-093818237-41DBP2ND
2017-11-093818238-42DBP2ND
2017-11-093818240-44DBP2ND
2017-11-0938182394-43DBP2ND
2018-02-063866183-87DBP2ND
2018-02-063866181-85DBP2ND
2018-02-063866182-86DBP2ND
2018-02-063866184-88DBP20.500 ppb
2018-05-083931143-39-DBP2ND
2018-05-083931141-37-DBP2ND
2018-05-083931142-38-DBP2ND
2018-05-083931144-40-DBP2ND
2018-08-074017511-12-DBP2ND
2018-08-074017505-06-DBP2ND
2018-08-074017509-10-DBP2ND
2018-08-074017507-08-DBP2ND
2018-08-154024547-46-DBP2ND
2018-08-154024549-48-DBP2ND
2018-08-154024545-44-DBP2ND
2018-08-154024543-42-DBP2ND
2018-11-054111335-34-DBP2ND
2018-11-054111331-30-DBP2ND
2018-11-054111337-36-DBP2ND
2018-11-054111333-32-DBP2ND
2019-02-054189664-60-DBP2ND
2019-02-054189661-57-DBP2ND
2019-02-054189662-58-DBP2ND
2019-02-054189663-59-DBP2ND
2019-05-074285924-25-DBP2ND
2019-05-074285918-19-DBP2ND
2019-05-074285922-23-DBP2ND
2019-05-074285920-21-DBP2ND
2019-08-204394298-99-DBP2ND
2019-08-204394292-93-DBP2ND
2019-08-204394294-95-DBP2ND
2019-08-204394296-97-DBP2ND
2019-11-064478598-94-DBP2ND
2019-11-064478599-95-DBP2ND
2019-11-064478600-96-DBP2ND
2019-11-064478601-97-DBP2ND