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EWG's Tap Water Database — 2019 UPDATE

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Silver

City of Denison

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2013-06-12Q1302205015ND
2013-06-12Q1302205014ND
2014-02-25Q1406059014ND
2014-02-25Q1406059013ND
2015-03-03Q1507894009ND
2015-06-15Q1522052004ND
2016-02-16Q1606768008ND
2016-02-16Q1606768007ND
2017-02-07Q1705466004ND
2017-08-08Q1733790004ND