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EWG's Tap Water Database

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Silver

Calcasieu Parish WW District 9 Carlyss

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011ND20ND
2012N/A00N/A
2013N/A00N/A
2014ND20ND
2015N/A00N/A

ppb = parts per billion.

All test results

Date Lab ID Result
2011-02-28AD51147ND
2011-02-28AD51147ND
2011-03-21AD51515ND
2011-03-21AD51515ND
2014-02-24AD89309ND
2014-02-24AD89309ND
2014-03-31AD90289ND
2014-03-31AD90289ND