Silver
Pendleton Water Association
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 24.0 ppb | 1 | 1 | 24.0 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-20 | 35375979001 | ND |
| 2018-02-20 | 35375979001 | ND |
| 2019-03-12 | 35454721001 | ND |
| 2019-03-12 | 35454721001 | ND |
| 2020-02-10 | B2000668-001 | ND |
| 2021-01-20 | B2100177-001 | 24.0 ppb |
| 2022-02-21 | B2200825-001 | ND |
| 2023-02-27 | B2300826-001 | ND |
| 2023-08-30 | B2303712-001 | ND |