Silver
United Water System
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 4 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | 40.0 ppb | 4 | 2 | ND - 80.0 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 |
---|---|---|
2014-04-21 | AD90766 | ND |
2014-04-21 | AD90771 | ND |
2014-04-21 | AD90766 | ND |
2014-04-21 | AD90771 | ND |
2017-05-01 | AE13963 | 80.0 ppb |
2017-05-01 | AE13967 | ND |
2017-05-01 | AE13963 | 80.0 ppb |
2017-05-01 | AE13967 | ND |