Silver
Pleasantville Water District
NOTE: Pleasantville Water District purchases water from New Castle/Stanwood WD which is required to test for silver. Sample information shown below was taken by New Castle/Stanwood WD.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
NOTE: Pleasantville Water District purchases water from New Castle/Stanwood WD which is required to test for silver. Sample information shown below was taken by New Castle/Stanwood WD.
| Date | Lab ID | Result |
|---|---|---|
| 2014-10-20 | AQ21746SEC | ND |
| 2015-10-06 | AR31703SEC | ND |
| 2018-10-16 | AU22444-INS | ND |
| 2018-12-05 | AU26061-INS | ND |
| 2019-10-01 | AV20755-INS | ND |
| 2019-12-19 | AV26488-INS | ND |