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EWG's Tap Water Database — 2019 UPDATE

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Silver

City of Chino Hills

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND10ND
2014ND20ND
2015N/A00N/A
2016ND20ND
2017ND40ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-07-184790-014-1130ND
2013-09-184790-014-1230ND
2014-01-234790-001-1300ND
2014-01-234790-017-1330ND
2016-03-034790-014-1130ND
2016-03-034790-024-1030ND
2017-02-169588-001-1010ND
2017-02-169588-017-1040ND
2017-04-199588-009-1030ND
2017-04-199588-010-0945ND