Silver
Lacey Water Department
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 12 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2021-04-29 | 4109335 | ND |
| 2021-05-05 | 4115243 | ND |
| 2021-06-16 | 4136305 | ND |
| 2021-06-16 | 4136304 | ND |
| 2021-07-13 | 4145911 | ND |
| 2021-07-13 | 4145912 | ND |
| 2021-07-13 | 4152638 | ND |
| 2021-07-14 | 4159366 | ND |
| 2021-07-14 | 4159364 | ND |
| 2021-08-10 | 4159369 | ND |
| 2021-08-10 | 4159368 | ND |
| 2021-09-13 | 4176408 | ND |