Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Silver

Golden State Water Company (GSWC) - Southwest

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND140ND
2015N/A00N/A
2016N/A00N/A
2017ND130ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-132706-005-1314ND
2014-05-132706-070-1325ND
2014-05-132706-069-1127ND
2014-05-132706-064-1104ND
2014-05-132706-062-1017ND
2014-05-132706-061-1037ND
2014-05-132706-045-1204ND
2014-05-132706-043-1140ND
2014-05-132706-039-1221ND
2014-05-132706-038-0811ND
2014-05-132706-037-0837ND
2014-05-132706-036-0953ND
2014-05-132706-011-1356ND
2014-05-132706-010-0915ND
2017-02-239590-073-0924ND
2017-03-239590-011-1240ND
2017-03-299590-005-1345ND
2017-03-299590-070-1307ND
2017-03-299590-045-1145ND
2017-03-299590-039-1235ND
2017-03-299590-036-0915ND
2017-03-299590-010-1050ND
2017-03-309590-069-0845ND
2017-03-309590-043-0920ND
2017-03-309590-038-0725ND
2017-03-309590-037-0653ND
2017-04-139590-064-0754ND