Silver
City of Richland
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 |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-06-24 | 99337 | ND |
| 2014-06-24 | 99338 | ND |
| 2014-06-24 | 99339 | ND |
| 2015-05-06 | 59846 | ND |
| 2016-04-19 | ND | |
| 2017-03-29 | ND | |
| 2017-03-29 | ND | |
| 2017-06-14 | ND | |
| 2018-05-09 | ND | |
| 2019-04-11 | ND | |
| 2019-05-07 | ND | |
| 2019-05-07 | ND |