Silver
City of Torrance Water Department
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.
15
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 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-05 | 9588-009-1008 | ND |
| 2014-02-05 | 9588-016-0950 | ND |
| 2017-01-31 | 9588-016-0920 | ND |
| 2018-02-23 | 9588-023-0935 | ND |
| 2018-02-23 | 9588-024-0955 | ND |
| 2018-06-14 | 9588-023-1012 | ND |
| 2018-06-14 | 9588-024-0935 | ND |
| 2018-08-02 | 9588-023-1000 | ND |
| 2018-08-02 | 9588-024-0933 | ND |
| 2018-11-08 | 9588-023-0948 | ND |
| 2018-11-08 | 9588-024-1037 | ND |
| 2019-01-23 | 9588-023-1010 | ND |
| 2019-01-23 | 9588-024-0940 | ND |
| 2019-05-01 | 9588-024-0934 | ND |
| 2019-08-14 | 9588-023-0955 | ND |