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EWG's Tap Water Database — 2021 UPDATE

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Silver

Cal/Am Water Company - San Marino

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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69

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND120ND
2016ND240ND
2017ND10ND
2018ND10ND
2019ND190ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-299590-007-1000ND
2014-04-141225-006-1050ND
2014-04-141225-044-0925ND
2014-04-141225-032-1015ND
2014-04-141225-029-0950ND
2014-04-141225-023-0935ND
2014-04-141225-020-1045ND
2014-04-141225-007-1110ND
2014-04-141225-011-0855ND
2014-05-121225-014-1300ND
2014-05-191225-010-0850ND
2014-06-231225-017-1045ND
2015-05-121225-017-1245ND
2015-05-121225-007-1200ND
2015-05-181225-011-1050ND
2015-05-181225-044-1110ND
2015-05-181225-032-1130ND
2015-05-181225-023-1110ND
2015-05-201225-029-1235ND
2015-05-201225-006-1255ND
2015-05-271225-010-0830ND
2015-05-271225-020-0855ND
2015-09-089588-010-0915ND
2015-09-089588-020-0935ND
2016-06-061225-032-1105ND
2016-06-061225-044-1000ND
2016-06-061225-029-1045ND
2016-06-061225-023-1135ND
2016-06-061225-006-1100ND
2016-06-061225-020-1040ND
2016-06-061225-007-1210ND
2016-06-061225-010-1000ND
2016-06-061225-017-1130ND
2016-06-099588-007-0915ND
2016-09-079588-011-1105ND
2016-09-079588-017-1020ND
2016-09-079588-023-1120ND
2016-09-079588-032-1140ND
2016-09-149590-006-0930ND
2016-09-149590-007-0835ND
2016-09-149590-010-0805ND
2016-09-149590-044-0945ND
2016-09-149590-011-1130ND
2016-09-149590-032-1225ND
2016-09-149590-029-0920ND
2016-09-149590-020-1145ND
2016-09-149590-023-1200ND
2016-09-149590-017-0900ND
2017-01-179590-020-1010ND
2018-09-209588-020-1040ND
2019-05-139588-017-1015ND
2019-05-139588-023-0945ND
2019-05-139588-032-0955ND
2019-05-139588-020-0930ND
2019-06-189588-011-1005ND
2019-06-189588-007-1050ND
2019-06-189590-007-1155ND
2019-07-109590-029-1032ND
2019-07-109590-017-1041ND
2019-07-109590-006-1009ND
2019-07-109590-007-1104ND
2019-07-109590-044-1020ND
2019-07-109590-020-0921ND
2019-07-109590-032-0823ND
2019-07-109590-023-0833ND
2019-07-109590-011-0939ND
2019-07-179590-011-1050ND
2019-08-269588-010-0945ND
2019-08-269590-010-1001ND