Silver
St John Water District 1
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-22 | AD88492 | ND |
2014-01-22 | AD88492 | ND |
2015-04-06 | 35182606003 | ND |
2015-04-06 | 35182606003 | ND |
2016-02-23 | 35231304005 | ND |
2016-02-23 | 35231304005 | ND |
2017-01-25 | 35291206002 | ND |
2017-01-25 | 35291206002 | ND |
2018-01-23 | 35370117004 | ND |
2018-01-23 | 35370117004 | ND |
2019-01-22 | 35444040001 | ND |
2019-01-22 | 35444040001 | ND |