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EWG's Tap Water Database — 2021 UPDATE

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Silver

Altavista, Town of

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND10ND
2016ND30ND
2017ND10ND
2018ND20ND
2019ND30ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-10-01E140900863ND
2015-10-0100281-REI CONSULND
2016-10-1116101205-01AND
2016-10-1116101205-02AND
2016-10-1116101205-03AND
2017-12-1917122496-04AND
2018-01-0918010811-01AND
2018-10-1618102190-06AND
2019-10-14734664011ND
2019-10-14734664014ND
2019-10-14734664017ND