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EWG's Tap Water Database — 2019 UPDATE

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Bromochloromethane

City of Black Hawk

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND40ND
2014ND60ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

All test results

Date Result
2012-05-15ND
2012-06-25ND
2013-02-05ND
2013-02-19ND
2013-10-15ND
2013-10-15ND
2014-01-07ND
2014-01-07ND
2014-04-07ND
2014-04-07ND
2014-07-22ND
2014-07-22ND