Silver
City of San Marcos
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.
29
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 | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-12 | AC46696 | ND |
| 2014-08-12 | AC63050 | ND |
| 2014-08-12 | AC63049 | ND |
| 2015-06-10 | AC95344 | ND |
| 2015-06-10 | AC95343 | ND |
| 2015-06-10 | AC95339 | ND |
| 2016-03-16 | AD29002 | ND |
| 2016-03-16 | AD29003 | ND |
| 2016-06-16 | AD40879 | ND |
| 2016-09-07 | AD48075 | ND |
| 2016-09-07 | AD48074 | ND |
| 2016-12-12 | AD61574 | ND |
| 2016-12-12 | AD61581 | ND |
| 2017-02-22 | AD71448 | ND |
| 2017-05-03 | AD82346 | ND |
| 2017-05-03 | AD82350 | ND |
| 2017-05-03 | AD82349 | ND |
| 2017-05-03 | AD82345 | ND |
| 2017-10-12 | AE00525 | ND |
| 2018-01-25 | AE10438 | ND |
| 2018-01-25 | AE10439 | ND |
| 2018-07-26 | AE34619 | ND |
| 2019-01-16 | AE50027 | ND |
| 2019-01-16 | AE50021 | ND |
| 2019-01-16 | AE50024 | ND |
| 2019-01-16 | AE50023 | ND |
| 2019-01-16 | AE50022 | ND |
| 2019-04-16 | AE62469 | ND |
| 2019-07-09 | AE73591 | ND |