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EWG's Tap Water Database — 2021 UPDATE

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Silver

Oil City Water Works

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

ppb = parts per billion

All test results

Date Lab ID Result
2014-04-07AD90440ND
2014-04-07AD90440ND
2015-03-2335181011002ND
2015-03-2335181011002ND
2016-05-0235242556002ND
2016-05-0235242556002ND
2017-04-1735307223005ND
2017-04-1735307223005ND
2018-01-0835367516001ND
2018-01-0835367516001ND
2019-02-1835449635001ND
2019-02-1835449635001ND