Silver
City of Ripon
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-06-05 | 2625-022-1405 | ND |
2015-01-22 | 2625-003-0930 | ND |
2015-06-08 | 2625-007-0955 | ND |
2016-06-15 | 2625-010-0820 | ND |
2016-10-20 | 2625-020-1045 | ND |
2016-11-02 | 2625-024-1000 | ND |
2017-06-14 | 2625-010-0930 | ND |
2017-10-24 | 2625-020-1020 | ND |
2017-11-15 | 2625-024-0924 | ND |
2018-06-12 | 2625-007-0945 | ND |