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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

White Plains

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.

MORE ABOUT THIS CONTAMINANT

 

29

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
20156.50 ppb41ND - 26.0 ppb
2016ND80ND
2017ND60ND
20180.220 ppb51ND - 1.10 ppb
2019ND50ND

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
2014-10-08AI57165ND
2015-06-10AI79549ND
2015-06-10AI79548ND
2015-07-22AI8392226.0 ppb
2015-11-16AJ01126ND
2016-01-25AJ04919ND
2016-02-22AJ06933ND
2016-04-26AJ10883ND
2016-05-18AJ12504ND
2016-08-01AJ20447ND
2016-08-22AJ23554ND
2016-10-26AJ32286ND
2016-11-28AJ34134ND
2017-02-27AJ47114ND
2017-05-30AJ56264ND
2017-07-05AJ59219ND
2017-07-05AJ59218ND
2017-08-21AJ65147ND
2017-11-27AJ74287ND
2018-02-21AJ84380ND
2018-03-21AJ86349ND
2018-06-04AJ90578ND
2018-08-27AJ990271.10 ppb
2018-12-12AK08088ND
2019-02-25AK12017ND
2019-05-06AK16564ND
2019-05-06AK16552ND
2019-09-03AK29110ND
2019-12-05AK37709ND