Silver
Attleboro 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.
21
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 | 5 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Result |
|---|---|
| 2014-04-03 | ND |
| 2014-04-03 | ND |
| 2014-04-03 | ND |
| 2014-11-05 | ND |
| 2014-11-05 | ND |
| 2015-04-02 | ND |
| 2015-08-21 | ND |
| 2015-10-01 | ND |
| 2016-04-07 | ND |
| 2016-04-07 | ND |
| 2016-08-03 | ND |
| 2016-08-03 | ND |
| 2017-04-06 | ND |
| 2017-04-10 | ND |
| 2017-06-27 | ND |
| 2018-04-05 | ND |
| 2018-04-05 | ND |
| 2018-07-11 | ND |
| 2019-04-04 | ND |
| 2019-04-04 | ND |
| 2019-06-07 | ND |