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EWG's Tap Water Database — 2019 UPDATE

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Silver

City of Wichita Falls

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.

 

14

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
2014ND40ND
2015ND40ND
2016ND20ND
2017ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2013-09-25Q1308144024ND
2013-09-25Q1308144022ND
2014-05-13Q1415816002ND
2014-08-14Q1436796021ND
2014-11-12AC71808ND
2014-11-12AC71809ND
2015-02-09Q1505019007ND
2015-02-09Q1505019006ND
2015-05-11Q1517193002ND
2015-09-22Q1537019002ND
2016-02-01Q1604190003ND
2016-02-01Q1604190002ND
2017-03-06Q1709227003ND
2017-08-07Q1733093007ND