Silver
City of Chesapeake - Northwest River 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.
11
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 | 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 |
|---|---|---|
| 2014-08-20 | E140800082 | ND |
| 2015-01-27 | VA010-DCLS | ND |
| 2015-08-18 | VA010-DCLS | ND |
| 2016-01-20 | E151205122 | ND |
| 2016-08-22 | E160802679 | ND |
| 2017-02-13 | E170100159 | ND |
| 2017-08-01 | E170701930 | ND |
| 2018-02-12 | E180102305 | ND |
| 2018-08-14 | E180700136 | ND |
| 2019-01-28 | E181206805 | ND |
| 2019-08-12 | E190800335 | ND |