Silver
Douglass, 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.
15
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 | 5 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-02-03 | 271337 | ND |
| 2015-02-03 | 271338 | ND |
| 2015-02-03 | 271339 | ND |
| 2015-02-03 | 271340 | ND |
| 2015-02-03 | 271341 | ND |
| 2015-03-10 | 293682 | ND |
| 2015-03-10 | 293683 | ND |
| 2015-03-10 | 293684 | ND |
| 2015-03-10 | 293685 | ND |
| 2018-03-06 | 907566 | ND |
| 2018-04-02 | 937928 | ND |
| 2018-04-02 | 937929 | ND |
| 2018-04-02 | 937931 | ND |
| 2018-05-08 | 967959 | ND |
| 2019-01-08 | 937930 | ND |