Silver
Westfield 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.
41
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 | ND | 7 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 9 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Result |
|---|---|
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2014-05-21 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2015-06-02 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-05-25 | ND |
| 2016-06-03 | ND |
| 2017-05-24 | ND |
| 2017-05-24 | ND |
| 2017-05-24 | ND |
| 2017-05-24 | ND |
| 2017-05-24 | ND |
| 2017-05-24 | ND |
| 2018-05-14 | ND |
| 2018-05-14 | ND |
| 2018-05-14 | ND |
| 2018-05-14 | ND |
| 2018-05-14 | ND |
| 2018-05-14 | ND |
| 2019-10-23 | ND |
| 2019-10-23 | ND |
| 2019-10-23 | ND |
| 2019-10-23 | ND |
| 2019-10-23 | ND |