Silver
Amawalk-shenorock Water 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.
6
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 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | 1.000 ppb | 1 | 1 | 1.000 ppb |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-11-24 | AQ24222 INS | ND |
| 2015-03-09 | 420-87964-1 INS | ND |
| 2016-11-16 | AS24346 INS | ND |
| 2017-02-28 | 420-117562-5-INS | ND |
| 2018-02-12 | 420-132803-1 INS | ND |
| 2019-02-27 | 420-150072-1-INS | 1.000 ppb |