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EWG's Tap Water Database — 2021 UPDATE

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Bromochloromethane

Nob Hill Water Association

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND80ND
2016ND10ND
2017N/A00N/A
2018ND10ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-04-21WA97-SE1-14-0709ND
2014-04-21WA97-SE1-14-0709ND
2014-04-21WA97-SE1-14-0709ND
2014-09-09WA97-SE1-14-1795ND
2014-09-09WA97-SE1-14-1795ND
2015-05-14WA97-SE2-15-0960ND
2015-05-14WA97-SE1-15-0960ND
2015-06-2375105ND
2015-06-2375103ND
2015-07-1475167ND
2015-09-0175402ND
2015-10-06WA97-SE2-15-2166ND
2015-10-06WA97-SE2-15-2166ND
2016-07-12ND
2018-06-06ND