Silver
Massachusetts Water Resources Authority (MWRA)
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 8 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | ND | 8 | 0 | ND |
2017 | ND | 8 | 0 | ND |
2018 | ND | 8 | 0 | ND |
2019 | ND | 8 | 0 | ND |
ppb = parts per billion
All test results
Date | Result |
---|---|
2014-01-06 | ND |
2014-01-07 | ND |
2014-04-07 | ND |
2014-04-07 | ND |
2014-07-07 | ND |
2014-07-08 | ND |
2014-10-06 | ND |
2014-10-07 | ND |
2015-01-05 | ND |
2015-01-06 | ND |
2015-04-06 | ND |
2015-04-07 | ND |
2015-07-06 | ND |
2015-07-07 | ND |
2015-10-06 | ND |
2015-10-06 | ND |
2016-01-05 | ND |
2016-01-05 | ND |
2016-04-05 | ND |
2016-04-05 | ND |
2016-07-05 | ND |
2016-07-05 | ND |
2016-10-04 | ND |
2016-10-04 | ND |
2017-01-03 | ND |
2017-01-03 | ND |
2017-04-04 | ND |
2017-04-04 | ND |
2017-07-11 | ND |
2017-07-11 | ND |
2017-10-03 | ND |
2017-10-03 | ND |
2018-01-02 | ND |
2018-01-02 | ND |
2018-04-03 | ND |
2018-04-03 | ND |
2018-07-10 | ND |
2018-07-10 | ND |
2018-10-02 | ND |
2018-10-02 | ND |
2019-01-08 | ND |
2019-01-08 | ND |
2019-04-02 | ND |
2019-04-02 | ND |
2019-07-02 | ND |
2019-07-02 | ND |
2019-10-01 | ND |
2019-10-01 | ND |