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EWG's Tap Water Database — 2021 UPDATE

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Bromochloromethane

Dartmouth Water Division

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND40ND
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017ND20ND
2018ND20ND
2019ND20ND

ppb = parts per billion

All test results

Date Result
2013-09-17ND
2013-09-17ND
2013-09-18ND
2013-09-18ND
2014-03-06ND
2014-03-06ND
2014-03-06ND
2014-06-11ND
2017-10-17ND
2017-10-17ND
2018-12-04ND
2018-12-04ND
2019-11-21ND
2019-11-21ND