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EWG's Tap Water Database

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Silver

Public Wholesale WSD 5

Silver occurs naturally in surface and groundwater and can be added to water as a biocide that inhibits growth of bacteria and algae. Increasingly, the use of antimicrobial nano-sized silver particles in consumer products contributes to silver in water sources used for drinking water.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND10ND
2011ND10ND
2012ND10ND
2013ND10ND
2014ND10ND
2015ND10ND

ppb = parts per billion.

All test results

Date Lab ID Result
2010-03-02542899WSND
2011-05-03561159WSND
2012-05-08578530WSND
2013-05-07595616WSND
2014-04-22100209ND
2015-04-21316465ND