Silver
City of Atwater
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.
24
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 16 | 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 |
|---|---|---|
| 2015-03-11 | 5806-013-0915 | ND |
| 2015-03-11 | 5806-014-0845 | ND |
| 2015-03-11 | 5806-021-0645 | ND |
| 2015-03-11 | 5806-015-0815 | ND |
| 2015-03-11 | 5806-019-0715 | ND |
| 2015-03-11 | 5806-016-0745 | ND |
| 2015-03-11 | 5806-018-1015 | ND |
| 2015-03-11 | 5806-017-0945 | ND |
| 2015-12-07 | 5806-013-0630 | ND |
| 2015-12-07 | 5806-021-0715 | ND |
| 2015-12-07 | 5806-019-1030 | ND |
| 2015-12-07 | 5806-018-0830 | ND |
| 2015-12-07 | 5806-017-0900 | ND |
| 2015-12-07 | 5806-016-0745 | ND |
| 2015-12-07 | 5806-015-1000 | ND |
| 2015-12-07 | 5806-014-0930 | ND |
| 2018-11-29 | 5806-016-1020 | ND |
| 2018-11-29 | 5806-017-0710 | ND |
| 2018-11-29 | 5806-015-0650 | ND |
| 2018-11-29 | 5806-018-0820 | ND |
| 2018-11-29 | 5806-014-1130 | ND |
| 2018-11-29 | 5806-019-0855 | ND |
| 2018-11-29 | 5806-013-1100 | ND |
| 2018-11-29 | 5806-021-0730 | ND |