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EWG's Tap Water Database — 2019 UPDATE

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Silver

Tennessee American Water

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND40ND
2014ND30ND
2015ND20ND
2016ND20ND
2017ND20ND

ppb = parts per billion

All test results

Date Result
2012-03-13ND
2012-06-18ND
2013-01-29ND
2013-06-05ND
2013-09-25ND
2013-12-04ND
2014-01-20ND
2014-07-23ND
2014-10-21ND
2015-01-12ND
2015-07-21ND
2016-01-19ND
2016-07-13ND
2017-01-10ND
2017-07-11ND