Silver
City of Mountain View
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.
7
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-23 | 1610-011-1100 | ND |
| 2014-04-23 | 1610-016-1045 | ND |
| 2014-04-23 | 1610-029-0915 | ND |
| 2017-06-08 | 1610-011-0950 | ND |
| 2017-06-08 | 1610-016-1020 | ND |
| 2018-03-01 | 1610-029-0840 | ND |
| 2018-12-06 | 9590-014-1200 | ND |