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EWG's Tap Water Database — 2021 UPDATE

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Bromochloromethane

San Dieguito WD

Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.0425 ppb42ND - 0.0900 ppb
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND
2018ND20ND
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2013-03-20201303210072AM0.0900 ppb
2013-06-11201306120241AMND
2013-09-10201309120470AM0.0800 ppb
2013-12-10201312110781AMND