Silver
Borrego 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.
16
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 | N/A | 0 | 0 | N/A |
| 2016 | ND | 8 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 7 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-14 | 4790-010-0741 | ND |
| 2016-03-22 | 4790-005-0740 | ND |
| 2016-03-22 | 4790-020-0751 | ND |
| 2016-04-12 | 4790-006-0735 | ND |
| 2016-04-12 | 4790-010-0722 | ND |
| 2016-04-12 | 4790-015-0714 | ND |
| 2016-05-16 | 4790-007-0724 | ND |
| 2016-05-16 | 4790-008-0736 | ND |
| 2016-05-16 | 4790-012-0709 | ND |
| 2019-04-02 | 4790-006-0810 | ND |
| 2019-04-02 | 4790-020-0830 | ND |
| 2019-04-16 | 4790-010-0656 | ND |
| 2019-04-16 | 4790-015-0645 | ND |
| 2019-05-07 | 4790-007-0723 | ND |
| 2019-05-07 | 4790-008-0705 | ND |
| 2019-05-07 | 4790-012-0628 | ND |