Silver
Cabot Waterworks
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 |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-02 | 140930018 | ND |
| 2016-08-15 | Y162310021 | ND |
| 2016-11-02 | Y163130006 | ND |
| 2016-11-14 | Y163220008 | ND |
| 2017-01-10 | Y170130021 | ND |
| 2017-02-06 | Y170400030 | ND |
| 2017-06-05 | Y171580099 | ND |
| 2017-07-05 | Y171870083 | ND |
| 2017-10-02 | Y172780043 | ND |
| 2018-02-26 | Y180600037 | ND |
| 2018-04-18 | Y181090031 | ND |
| 2019-01-07 | Y190110011 | ND |