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EWG's Tap Water Database — 2019 UPDATE

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Silver

City of Port Angeles

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.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20142.00 ppb112.00 ppb
2015ND20ND
2016ND10ND
2017ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-09-15415742.00 ppb
2015-07-1632814ND
2015-07-1632814ND
2016-09-14ND
2017-08-02ND