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EWG's Tap Water Database — 2019 UPDATE

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Silver

Three Valleys Municipal Water District

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
2014ND20ND
2015ND20ND
2016ND20ND
2017ND30ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-03-213761-002-1100ND
2012-07-183761-004-0752ND
2013-03-053761-002-1040ND
2014-03-113761-002-1030ND
2014-08-263761-004-1000ND
2015-03-103761-002-0930ND
2015-07-143761-004-0832ND
2016-03-153761-002-0900ND
2016-07-193761-004-0945ND
2017-03-213761-002-0730ND
2017-05-163761-004-0900ND
2017-07-183761-004-0900ND