Silver
City of Gilroy
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 | N/A | 0 | 0 | N/A |
2015 | ND | 9 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 9 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2015-05-20 | 5810-006-0945 | ND |
2015-05-20 | 5810-010-0810 | ND |
2015-05-20 | 5810-007-1300 | ND |
2015-05-20 | 5810-008-1025 | ND |
2015-05-20 | 5810-009-1100 | ND |
2015-05-21 | 5810-002-1010 | ND |
2015-05-21 | 5810-011-0955 | ND |
2015-05-21 | 5810-004-1250 | ND |
2015-05-21 | 5810-001-0800 | ND |
2018-05-03 | 1610-007-1030 | ND |
2018-05-03 | 1610-011-0930 | ND |
2018-05-03 | 1610-010-1000 | ND |
2018-05-03 | 1610-009-0815 | ND |
2018-05-03 | 1610-008-0755 | ND |
2018-05-03 | 1610-006-1106 | ND |
2018-05-03 | 1610-004-0835 | ND |
2018-05-03 | 1610-001-0905 | ND |
2018-05-24 | 1610-002-0805 | ND |