Silver
City of Richland
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.
9
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 | ND | 3 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-09 | ND | |
| 2019-04-11 | ND | |
| 2019-05-07 | ND | |
| 2019-05-07 | ND | |
| 2021-03-18 | 4092670 | ND |
| 2022-04-13 | 4282217 | ND |
| 2022-04-13 | 4282218 | ND |
| 2022-04-14 | 4277619 | ND |
| 2023-05-31 | 4478537 | ND |