Silver
Maynard DPW, Water Division
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.
14
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 | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 3 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Result |
|---|---|
| 2014-12-16 | ND |
| 2014-12-16 | ND |
| 2014-12-16 | ND |
| 2016-10-31 | ND |
| 2016-10-31 | ND |
| 2016-12-29 | ND |
| 2018-07-19 | ND |
| 2018-07-24 | ND |
| 2018-07-31 | ND |
| 2018-07-31 | ND |
| 2018-12-14 | ND |
| 2019-04-03 | ND |
| 2019-04-03 | ND |
| 2019-12-05 | ND |