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EWG's Tap Water Database — 2021 UPDATE

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Silver

Southwest Ouachita Waterworks Inc.

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND20ND
2016N/A00N/A
2017ND140ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-06-16AD92407ND
2014-06-16AD92402ND
2014-06-16AD92407ND
2014-06-16AD92402ND
2014-10-20AD98771ND
2014-10-20AD98761ND
2014-10-20AD98766ND
2014-10-20AD98771ND
2014-10-20AD98776ND
2014-10-20AD98766ND
2014-10-20AD98761ND
2014-10-20AD98776ND
2015-01-05AE00852ND
2015-01-05AE00852ND
2017-06-1235318592003ND
2017-06-1235318592002ND
2017-06-1235318592001ND
2017-06-1235318592001ND
2017-06-1235318592002ND
2017-06-1235318592003ND
2017-10-1635343270001ND
2017-10-1635343270004ND
2017-10-1635343270003ND
2017-10-1635343270002ND
2017-10-1635343270001ND
2017-10-1635343270004ND
2017-10-1635343270003ND
2017-10-1635343270002ND