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EWG's Tap Water Database — 2019 UPDATE

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Bromochloromethane

City of Carlsbad

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
2012ND60ND
20130.190 ppb110.190 ppb
20140.190 ppb330.0600 ppb - 0.420 ppb
2015ND40ND
20160.218 ppb41ND - 0.870 ppb
2017ND40ND

ppb = parts per billion

All test results

Date Lab ID Result
2013-10-2329183850.190 ppb
2014-01-2229618060.0900 ppb
2014-04-1630095710.0600 ppb
2014-07-3130735950.420 ppb