Silver
Colby, City of
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.
18
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 | 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 |
|---|---|---|
| 2015-01-28 | 268397 | ND |
| 2015-01-28 | 268396 | ND |
| 2015-01-28 | 268395 | ND |
| 2015-01-28 | 268394 | ND |
| 2015-01-28 | 268393 | ND |
| 2015-01-28 | 268392 | ND |
| 2015-01-28 | 268391 | ND |
| 2015-01-28 | 268390 | ND |
| 2015-12-09 | 421260 | ND |
| 2018-01-29 | 907795 | ND |
| 2018-01-29 | 907794 | ND |
| 2018-01-29 | 907793 | ND |
| 2018-01-29 | 907792 | ND |
| 2018-01-29 | 907791 | ND |
| 2018-01-29 | 907789 | ND |
| 2018-01-29 | 907788 | ND |
| 2018-01-29 | 907787 | ND |
| 2018-03-21 | 907790 | ND |