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EWG's Tap Water Database

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Silver

Clearwater Water System

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.

 

3

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
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
20150.0333 ppb31ND - 0.1000 ppb

ppb = parts per billion.

All test results

Date Result
2015-01-13ND
2015-01-130.1000 ppb
2015-05-07ND