Silver
City of Spokane
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.
14
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 |
|---|---|---|---|---|
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-29 | 00943 | ND |
| 2014-07-29 | 00944 | ND |
| 2015-07-28 | 63257 | ND |
| 2015-07-28 | 63245 | ND |
| 2015-07-28 | 63238 | ND |
| 2016-07-26 | ND | |
| 2016-07-26 | ND | |
| 2017-07-25 | ND | |
| 2017-07-25 | ND | |
| 2018-07-17 | ND | |
| 2018-07-17 | ND | |
| 2018-07-17 | ND | |
| 2019-07-23 | ND | |
| 2019-07-23 | ND |