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EWG's Tap Water Database — 2021 UPDATE

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Silver

Central Texas 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.

 

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
2014-01-27AC40158ND
2014-04-08AC49703ND
2015-03-10AC83422ND
2015-06-01AC93840ND
2016-03-14AD28431ND
2016-03-14AD28430ND
2017-03-20AD75676ND
2017-03-20AD75677ND
2018-01-17AE09095ND
2018-01-17AE09096ND
2019-03-27AE60179ND
2019-03-27AE60177ND