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EWG's Tap Water Database — 2019 UPDATE

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Silver

City of Manteca

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND50ND
2014ND20ND
2015ND90ND
2016ND40ND
2017ND20ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-085810-044-0745ND
2012-05-085810-028-0810ND
2012-05-085810-016-1115ND
2012-05-085810-013-0710ND
2012-06-125810-049-0717ND
2012-08-145810-015-0920ND
2012-09-115810-030-0927ND
2012-12-115810-036-1125ND
2013-04-105810-012-0805ND
2013-05-155810-034-0746ND
2013-06-055810-038-0745ND
2013-07-175810-032-0730ND
2013-08-145810-014-0810ND
2014-04-085810-040-0825ND
2014-06-105810-042-0750ND
2015-02-105810-044-0644ND
2015-05-125810-013-0750ND
2015-05-125810-028-1535ND
2015-05-125810-016-0725ND
2015-06-095810-049-0650ND
2015-07-215810-034-0812ND
2015-08-115810-015-0815ND
2015-09-085810-030-1045ND
2015-12-095810-036-0840ND
2016-04-195810-012-0920ND
2016-06-145810-038-0645ND
2016-07-125810-032-0630ND
2016-08-235810-014-0715ND
2017-05-095810-040-0859ND
2017-06-135810-042-0745ND