Silver
Louisa Water Department
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 | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | 4.00 ppb | 1 | 1 | 4.00 ppb |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-03-04 | 201402999001 | ND |
2015-03-03 | 201502573001 | ND |
2016-03-01 | 201602910001 | ND |
2017-03-07 | 201703200001 | ND |
2018-03-20 | 18007720 | ND |
2019-03-05 | 19006283 | 4.00 ppb |