Know Your Environment. Protect Your Health.

Silver

U.s. Coast Guard Training Center

NOTE: U.s. Coast Guard Training Center purchases water from City of Petaluma which is required to test for silver. Sample information shown below was taken by City of Petaluma.

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND40ND
2020N/A00N/A
2021ND50ND
2022ND10ND
2023ND10ND

ppb = parts per billion

All test results

NOTE: U.s. Coast Guard Training Center purchases water from City of Petaluma which is required to test for silver. Sample information shown below was taken by City of Petaluma.

Date Lab ID Result
2018-03-07CA4910006_057_057-201803070900ND
2018-06-06CA4910006_031_031-201806061020ND
2018-06-06CA4910006_030_030-201806061150ND
2018-06-06CA4910006_009_009-201806060830ND
2018-09-13CA4910006_032_032-201809131130ND
2018-11-07CA4910006_012_012-201811070830ND
2019-03-13CA4910006_027_027-201903130910ND
2019-03-13CA4910006_051_051-201903131058ND
2019-03-13CA4910006_026_026-201903131008ND
2019-03-13CA4910006_055_055-201903131108ND
2021-03-09CA4910006_057_057-202103091558ND
2021-03-09CA4910006_009_009-202103091015ND
2021-03-09CA4910006_012_012-202103091440ND
2021-03-09CA4910006_032_032-202103091355ND
2021-03-09CA4910006_031_031-202103091140ND
2022-08-16CA4910006_030_030-202208161445ND
2022-12-15CA4910006_026_026-202212151217ND
2022-12-15CA4910006_027_027-202212151149ND
2022-12-15CA4910006_055_055-202212151050ND
2022-12-15CA4910006_051_051-202212151120ND