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EWG's Tap Water Database — 2021 UPDATE

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Bromochloromethane

California American Water Company - Coronado

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.118 ppb440.0700 ppb - 0.170 ppb
20140.0500 ppb42ND - 0.120 ppb
2015ND110ND
2016ND120ND
2017ND90ND
2018ND160ND
2019ND60ND

ppb = parts per billion

All test results

Date Lab ID Result
2013-08-14230266010.130 ppb
2013-08-14230265010.170 ppb
2013-11-14240097010.1000 ppb
2013-11-14240098010.0700 ppb
2014-02-12247419010.120 ppb
2014-02-12247418010.0800 ppb
2014-05-1425564001ND
2014-05-1425564101ND