Silver
Whitworth Water District 2
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 |
|---|---|---|---|---|
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-21 | ND | |
| 2018-05-21 | ND | |
| 2018-05-21 | ND | |
| 2019-06-18 | ND | |
| 2019-06-21 | ND | |
| 2021-05-17 | 4117274 | ND |
| 2022-04-21 | 4271877 | ND |
| 2022-05-18 | 4284648 | ND |
| 2022-05-31 | 4294015 | ND |
| 2022-06-27 | 4309799 | ND |
| 2022-07-14 | 4309806 | ND |
| 2023-04-27 | 4452165 | ND |