Silver
City of San Juan Capistrano
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.
10
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-02-10 | 9590-010-1111 | ND |
| 2015-05-19 | 9590-010-0808 | ND |
| 2015-08-24 | 9590-010-0911 | ND |
| 2016-02-29 | 9590-010-0809 | ND |
| 2017-02-08 | 9590-010-0815 | ND |
| 2018-05-10 | 9590-010-1225 | ND |
| 2019-03-13 | 4792-010-1005 | ND |
| 2019-08-13 | 4792-010-1100 | ND |
| 2019-09-10 | 4792-010-1020 | ND |
| 2019-11-19 | 4792-010-1150 | ND |