Silver
City of Manteca
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 9 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-08 | 5810-040-0825 | ND |
| 2014-06-10 | 5810-042-0750 | ND |
| 2015-02-10 | 5810-044-0644 | ND |
| 2015-05-12 | 5810-013-0750 | ND |
| 2015-05-12 | 5810-016-0725 | ND |
| 2015-05-12 | 5810-028-1535 | ND |
| 2015-06-09 | 5810-049-0650 | ND |
| 2015-07-21 | 5810-034-0812 | ND |
| 2015-08-11 | 5810-015-0815 | ND |
| 2015-09-08 | 5810-030-1045 | ND |
| 2015-12-09 | 5810-036-0840 | ND |
| 2016-04-19 | 5810-012-0920 | ND |
| 2016-06-14 | 5810-038-0645 | ND |
| 2016-07-12 | 5810-032-0630 | ND |
| 2016-08-23 | 5810-014-0715 | ND |
| 2017-05-09 | 5810-040-0859 | ND |
| 2017-06-13 | 5810-042-0745 | ND |
| 2018-02-13 | 5810-044-0849 | ND |
| 2018-05-08 | 5810-016-0600 | ND |
| 2018-05-08 | 5810-028-0655 | ND |
| 2018-05-08 | 5810-013-0725 | ND |
| 2018-06-12 | 5810-049-0845 | ND |
| 2018-08-14 | 5810-015-0816 | ND |
| 2018-12-11 | 5810-036-0742 | ND |
| 2019-04-23 | 5810-012-0547 | ND |
| 2019-06-04 | 5810-056-1242 | ND |
| 2019-06-11 | 5810-038-0555 | ND |
| 2019-07-09 | 5810-032-0601 | ND |
| 2019-08-13 | 5810-014-0703 | ND |