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EWG's Tap Water Database — 2019 UPDATE

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Silver

North Texas Municipal Water District Tawakoni Water Treatment Plant

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
2012ND10ND
2013ND10ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-12-121212559002ND
2013-08-20Q1305807004ND
2014-11-10Q1455284001ND
2015-05-28Q1519648004ND
2016-05-25Q1620796001ND
2017-06-27Q1726831001ND