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EWG's Tap Water Database — 2021 UPDATE

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Silver

Valley County Water District

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND30ND
2016ND20ND
2017ND20ND
2018ND40ND
2019ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-079588-001-0955ND
2014-08-079588-002-0945ND
2015-03-049588-001-0800ND
2015-03-049588-002-0841ND
2015-03-049588-006-1250ND
2016-06-209588-005-0930ND
2016-08-059588-006-0905ND
2017-08-299588-001-0905ND
2017-08-299588-002-0915ND
2018-04-189588-002-1347ND
2018-04-189588-005-1112ND
2018-04-259588-006-1246ND
2018-05-189588-001-0928ND
2019-07-189588-005-0915ND
2019-07-189588-006-1040ND