Silver
City of West 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.
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 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | 0.0250 ppb | 2 | 1 | ND - 0.0500 ppb |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-06-05 | ND | |
| 2019-05-08 | ND | |
| 2019-05-29 | ND | |
| 2021-07-27 | 4152630 | ND |
| 2022-05-18 | 4309636 | 0.0500 ppb |
| 2022-08-24 | 4376471 | ND |