Silver
Frederick County Sanitation Authority
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.
12
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-08 | E140605868 | ND |
| 2014-10-21 | E140902205 | ND |
| 2015-07-08 | VA010-DCLS | ND |
| 2015-10-21 | VA010-DCLS | ND |
| 2016-07-06 | E160604024 | ND |
| 2016-10-06 | E160903281 | ND |
| 2017-07-11 | E170605760 | ND |
| 2017-10-05 | E170903472 | ND |
| 2018-07-25 | E180601780 | ND |
| 2018-11-28 | E180905710 | ND |
| 2019-07-23 | E190605454 | ND |
| 2019-10-15 | E191000709 | ND |