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EWG's Tap Water Database — 2021 UPDATE

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Silver

Alameda County 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.

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93

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND170ND
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-045401-053-0955ND
2014-03-045401-041-0930ND
2014-03-045401-040-0845ND
2014-03-045401-038-0925ND
2014-07-215401-041-0955ND
2014-07-215401-038-0955ND
2014-07-225401-053-0905ND
2014-07-225401-040-0925ND
2014-10-145401-053-1145ND
2014-10-145401-041-1025ND
2014-10-145401-040-0900ND
2014-10-145401-038-1000ND
2015-01-275401-038-0955ND
2015-01-275401-053-1047ND
2015-01-275401-041-0945ND
2015-01-275401-040-1015ND
2015-04-215401-041-0935ND
2015-04-215401-038-0945ND
2015-04-215401-053-1010ND
2015-04-215401-040-0910ND
2015-06-095401-015-1120ND
2015-07-065401-040-1105ND
2015-07-065401-038-1000ND
2015-07-065401-041-0921ND
2015-07-215401-053-0905ND
2015-10-205401-038-1035ND
2015-10-205401-040-0940ND
2015-10-205401-053-1115ND
2015-10-205401-041-1025ND
2016-01-195401-038-0855ND
2016-01-195401-040-1035ND
2016-01-195401-053-0935ND
2016-01-195401-041-0910ND
2016-04-265401-040-0945ND
2016-04-265401-041-1025ND
2016-04-265401-038-1035ND
2016-05-105401-053-0915ND
2016-07-115401-038-0850ND
2016-07-115401-041-0820ND
2016-07-195401-040-0825ND
2016-07-195401-053-0955ND
2016-10-045401-053-0925ND
2016-10-045401-040-0825ND
2016-10-045401-038-0905ND
2016-10-045401-041-0855ND
2017-01-175401-053-1025ND
2017-01-175401-040-0937ND
2017-01-175401-038-0925ND
2017-01-175401-041-0925ND
2017-04-185401-053-0948ND
2017-04-185401-041-0910ND
2017-04-185401-040-0820ND
2017-04-185401-038-0925ND
2017-07-175401-041-1005ND
2017-07-175401-038-1030ND
2017-07-255401-040-0915ND
2017-07-255401-053-1032ND
2017-10-035401-041-0925ND
2017-10-035401-053-0958ND
2017-10-035401-040-0857ND
2017-10-035401-038-0915ND
2018-01-165401-053-1050ND
2018-01-165401-041-1025ND
2018-01-165401-038-1110ND
2018-01-165401-040-0920ND
2018-04-175401-053-1003ND
2018-04-175401-041-0939ND
2018-04-175401-040-0835ND
2018-04-175401-038-0926ND
2018-07-115401-038-0726ND
2018-07-115401-041-0755ND
2018-07-175401-040-0850ND
2018-07-175401-053-0845ND
2018-10-165401-053-1035ND
2018-10-165401-040-0820ND
2018-10-165401-038-0950ND
2018-10-165401-041-1005ND
2019-02-055401-053-1000ND
2019-02-055401-041-0930ND
2019-02-055401-040-0820ND
2019-02-055401-038-0940ND
2019-05-135401-053-0955ND
2019-05-145401-038-0900ND
2019-05-145401-041-0915ND
2019-05-145401-040-0815ND
2019-07-165401-041-1000ND
2019-07-165401-040-0755ND
2019-07-165401-053-1030ND
2019-08-145401-038-0920ND
2019-10-155401-040-0825ND
2019-10-155401-053-1000ND
2019-10-155401-038-0925ND
2019-10-155401-041-0910ND