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EWG's Tap Water Database

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Silver

Boone County PWSD 9

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012ND40ND
2013N/A00N/A
2014N/A00N/A
2015ND50ND

ppb = parts per billion.

All test results

Date Lab ID Result
2012-02-07AB65941ND
2012-02-07AB65942ND
2012-02-08AB65943ND
2012-02-08AB65944ND
2015-02-18AC42208ND
2015-02-18AC42207ND
2015-02-18AC42206ND
2015-02-18AC42205ND
2015-02-18AC42209ND