Silver
Arroyo Grande,Water Department
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 | 1 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 8 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-03-18 | 3761-013-0930 | ND |
2015-05-19 | 3761-006-0827 | ND |
2015-05-19 | 3761-013-1015 | ND |
2015-05-19 | 3761-008-1035 | ND |
2015-05-19 | 3761-007-0830 | ND |
2015-05-19 | 3761-001-0912 | ND |
2015-05-19 | 3761-004-0855 | ND |
2015-05-19 | 3761-003-0922 | ND |
2015-05-19 | 3761-002-0915 | ND |
2018-05-08 | 3761-004-0818 | ND |
2018-05-08 | 3761-003-1010 | ND |
2018-05-08 | 3761-006-0910 | ND |
2018-05-08 | 3761-007-0930 | ND |
2018-05-08 | 3761-002-0850 | ND |
2018-05-08 | 3761-008-0940 | ND |
2018-05-08 | 3761-013-0850 | ND |
2018-05-08 | 3761-001-0950 | ND |