Silver
City of Yakima Water Division
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.
10
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | 0.125 ppb | 4 | 2 | ND - 0.300 ppb |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-03-25 | 06825 | ND |
| 2015-06-02 | 14785 | ND |
| 2016-03-07 | ND | |
| 2016-04-20 | 0.300 ppb | |
| 2016-05-09 | ND | |
| 2016-05-18 | 0.200 ppb | |
| 2017-02-27 | ND | |
| 2018-03-12 | ND | |
| 2019-03-18 | ND | |
| 2019-06-01 | ND |