Silver
Danville
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.
13
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 |
|---|---|---|---|---|
| 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 | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-18 | 140790033 | ND |
| 2014-11-18 | Y143240004 | ND |
| 2015-02-04 | Y150360026 | ND |
| 2015-10-21 | Y152950004 | ND |
| 2016-01-12 | Y160150005 | ND |
| 2016-10-12 | Y162880002 | ND |
| 2017-01-11 | Y170130004 | ND |
| 2017-10-16 | Y172920002 | ND |
| 2018-01-30 | Y180320007 | ND |
| 2018-10-08 | Y182840007 | ND |
| 2019-01-16 | Y190170020 | ND |
| 2019-02-27 | Y190580004 | ND |
| 2019-10-15 | Y192900005 | ND |