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EWG's Tap Water Database — 2021 UPDATE

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Silver

Westside Rural Water Supply Corporation

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015ND10ND
2016ND30ND
2017ND10ND
2018ND10ND
2019ND30ND

ppb = parts per billion

All test results

Date Lab ID Result
2015-07-14Q1526983008ND
2016-11-07Q1647711019ND
2016-11-07Q1647711003ND
2016-11-07Q1647711008ND
2017-01-17Q1701920015ND
2018-10-30Q1843596010ND
2019-05-07Q1920849012ND
2019-05-07Q1920849013ND
2019-05-07Q1920849014ND