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EWG's Tap Water Database — 2019 UPDATE

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Silver

Rocky Branch Water System

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.

 

16

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
2014ND80ND
2015N/A00N/A
2016N/A00N/A
2017ND80ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-17AD89238ND
2014-02-17AD89238ND
2014-02-17AD89233ND
2014-02-17AD89233ND
2014-07-15AD93558ND
2014-07-15AD93563ND
2014-07-15AD93563ND
2014-07-15AD93558ND
2017-03-1435301204004ND
2017-03-1435301204003ND
2017-03-1435301204003ND
2017-03-1435301204004ND
2017-07-1035324127011ND
2017-07-1035324127010ND
2017-07-1035324127011ND
2017-07-1035324127010ND