Silver
City of San Juan
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-29 | AC40595 | ND |
| 2014-01-29 | AC40591 | ND |
| 2015-01-21 | AC77022 | ND |
| 2015-01-21 | AC77023 | ND |
| 2016-01-29 | AD20962 | ND |
| 2016-04-29 | AD34781 | ND |
| 2017-01-10 | AD63880 | ND |
| 2017-04-21 | AD80586 | ND |
| 2018-01-24 | AE10086 | ND |
| 2018-04-11 | AE21979 | ND |
| 2019-02-26 | AE55853 | ND |
| 2019-05-21 | AE67311 | ND |