Silver
Keene 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.
8
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-07-13 | 1607-15173-001 | ND |
| 2017-07-12 | 1707-15759-001 | ND |
| 2017-10-18 | 1710-25339-001 | ND |
| 2017-10-18 | 1710-25350-001 | ND |
| 2017-10-18 | 1710-25362-001 | ND |
| 2017-11-15 | 1711-27694-001IO | ND |
| 2018-07-25 | 1807-18364-001 | ND |
| 2019-07-31 | 1908-18886-001 | ND |