Silver
Sun Prairie Utilities
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.
8
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 1 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | 0.0386 ppb | 7 | 1 | ND - 0.270 ppb |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-18 | 775283 | ND |
| 2017-04-26 | 985407 | ND |
| 2017-04-26 | 985416 | ND |
| 2017-04-26 | 985414 | ND |
| 2017-04-26 | 985424 | ND |
| 2017-04-26 | 985427 | ND |
| 2017-04-26 | 985411 | ND |
| 2017-04-26 | 985420 | 0.270 ppb |