Silver
Knott County Water & Sewer District
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.
6
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | 4.00 ppb | 1 | 1 | 4.00 ppb |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 42.0 ppb | 1 | 1 | 42.0 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-07 | 201802542001 | ND |
| 2019-03-05 | 19006328 | 4.00 ppb |
| 2020-03-11 | 20005882 | ND |
| 2021-03-03 | 21004710 | 42.0 ppb |
| 2022-03-02 | 22005064 | ND |
| 2023-03-15 | 23005254 | ND |