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EWG's Tap Water Database — 2021 UPDATE

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Silver

Mountain View

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND10ND
2016ND20ND
2017ND50ND
2018ND10ND
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-25Y142390015ND
2015-08-10Y152250027ND
2016-08-29Y162450010ND
2016-12-13Y163510002ND
2017-02-14Y170470018ND
2017-04-10Y171030030ND
2017-07-10Y171950140ND
2017-08-15Y172290008ND
2017-10-09Y172850037ND
2018-09-04Y182500003ND
2019-09-10Y192550006ND