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EWG's Tap Water Database — 2019 UPDATE

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Silver

Golden State Water Company (GSWC) - South Arcadia

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

ppb = parts per billion

All test results

Date Lab ID Result
2012-08-169588-014-0850ND
2012-08-169588-015-0935ND
2013-05-159588-002-1045ND
2013-05-159588-005-0950ND
2014-08-289588-003-1020ND
2014-08-289588-004-1030ND
2014-08-289588-006-1100ND
2015-08-149588-014-1115ND
2015-08-149588-015-1035ND
2016-05-119588-005-1105ND
2016-06-229588-002-0910ND
2017-08-109588-003-1000ND
2017-08-109588-004-1010ND
2017-08-109588-006-1035ND