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EWG's Tap Water Database — 2019 UPDATE

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Bromochloromethane

Williams Water Supply

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
20120.500 ppb220.500 ppb
2013N/A00N/A
2014N/A00N/A
20150.700 ppb110.700 ppb
2016N/A00N/A
20170.500 ppb110.500 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2012-08-1319240220.500 ppb
2012-10-0219366630.500 ppb
2015-08-05OE2770660.700 ppb
2017-11-09OE5888680.500 ppb