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EWG's Tap Water Database — 2019 UPDATE

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Silver

San Gabriel County WD

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
2012ND20ND
2013ND10ND
2014ND40ND
2015ND10ND
2016ND10ND
2017ND30ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-07-179588-007-0945ND
2012-07-179588-009-0915ND
2013-05-243761-020-1125ND
2014-06-173761-020-1020ND
2014-07-149588-011-0945ND
2014-09-259588-001-0915ND
2014-10-089588-010-0920ND
2015-07-169588-007-0920ND
2016-07-189588-009-0925ND
2017-04-139588-020-0940ND
2017-07-179588-011-0945ND
2017-10-189588-010-0910ND