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EWG's Tap Water Database — 2019 UPDATE

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Silver

St. Louis City

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013N/A00N/A
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-11-14AB87313ND
2012-11-14AB87314ND
2014-05-28AC23435ND
2014-05-28AC23436ND
2015-05-29HBCB052915IOCND
2015-05-29CRCW052915IOCND
2016-07-19HBCB071916IOCND
2016-07-19CRCW071916IOCND
2017-08-16CRCW081617IOCND
2017-08-16HBBC081617IOCND