Silver
Merrimack Village District
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 | N/A | 0 | 0 | N/A |
2015 | ND | 3 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 2 | 0 | ND |
2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2015-04-07 | 15040059-002 | ND |
2015-04-14 | 15040142-001 | ND |
2015-04-14 | 15040142-002 | ND |
2016-04-21 | 16040293-001 | ND |
2018-04-05 | 18040073-001 | ND |
2018-04-05 | 18040074-001 | ND |
2019-06-14 | 19060224-001 | ND |