Silver
Diablo Water District
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 | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-07-08 | 9590-007-0850 | ND |
2015-07-07 | 9590-007-1120 | ND |
2016-07-05 | 9590-007-0955 | ND |
2017-07-11 | 9590-007-1115 | ND |
2018-07-17 | 1644-007-1055 | ND |
2019-07-09 | 1644-007-0910 | ND |