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EWG's Tap Water Database — 2019 UPDATE

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Silver

East Rio Hondo WSC

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.00967 ppb31ND - 0.0290 ppb
2013ND10ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-101201193002ND
2012-07-171207591003ND
2012-07-1712075910040.0290 ppb
2013-09-10AC29587ND
2014-03-06AC45918ND
2015-03-18AC84945ND
2016-02-25AD25623ND
2017-03-03AD73387ND