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EWG's Tap Water Database — 2021 UPDATE

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Silver

Nob Hill Water Association

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.

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND30ND
2017N/A00N/A
2018N/A00N/A
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2016-07-13ND
2016-07-13ND
2016-07-13ND
2019-07-02ND