Silver
Rra Preston Shores 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 | 0.440 ppb | 1 | 1 | 0.440 ppb |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-06-02 | Q1418669002 | 0.440 ppb |
2015-03-17 | Q1509890002 | ND |
2016-01-28 | Q1603912001 | ND |
2017-01-12 | Q1701557002 | ND |
2018-06-19 | Q1824375004 | ND |
2019-02-25 | Q1907958002 | ND |