Silver
City of Exeter
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.
12
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 6 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-01-14 | 5810-002-0900 | ND |
| 2016-01-14 | 5810-014-0820 | ND |
| 2016-01-21 | 5810-012-0903 | ND |
| 2016-01-21 | 5810-016-0830 | ND |
| 2016-02-17 | 5810-004-0900 | ND |
| 2016-03-23 | 5810-007-0900 | ND |
| 2019-06-21 | 5802-002-1050 | ND |
| 2019-06-21 | 5802-004-1035 | ND |
| 2019-06-21 | 5802-007-1020 | ND |
| 2019-06-21 | 5802-012-0940 | ND |
| 2019-06-21 | 5802-014-1000 | ND |
| 2019-06-21 | 5802-016-1105 | ND |