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EWG's Tap Water Database — 2021 UPDATE

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Silver

City of Seguin

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-19AC43519ND
2015-01-27AC77845ND
2016-01-19AD18512ND
2017-02-07AD69116ND
2018-03-21AE19257ND
2019-01-23AE50869ND