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EWG's Tap Water Database — 2021 UPDATE

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Bromochloromethane

Bay Area Water System

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
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND30ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-04-10LLH74980ND
2019-06-03LLI40595ND
2019-09-16LLI64542ND
2019-10-08LLI70019ND