Silver
City of Midlothian
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-03-31 | Q1410082010 | ND |
2014-03-31 | Q1410082011 | ND |
2015-03-19 | Q1510436002 | ND |
2015-06-01 | Q1519779002 | ND |
2016-03-23 | Q1611951001 | ND |
2016-05-18 | Q1619797004 | ND |
2017-07-11 | Q1728156001 | ND |
2017-09-28 | Q1747556004 | ND |
2018-01-25 | Q1802981004 | ND |
2018-01-25 | Q1802981005 | ND |
2019-02-12 | Q1906277007 | ND |
2019-02-12 | Q1906277001 | ND |