Silver
San Gabriel County WD
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.
11
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 | 4 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-06-17 | 3761-020-1020 | ND |
| 2014-07-14 | 9588-011-0945 | ND |
| 2014-09-25 | 9588-001-0915 | ND |
| 2014-10-08 | 9588-010-0920 | ND |
| 2015-07-16 | 9588-007-0920 | ND |
| 2016-07-18 | 9588-009-0925 | ND |
| 2017-04-13 | 9588-020-0940 | ND |
| 2017-07-17 | 9588-011-0945 | ND |
| 2017-10-18 | 9588-010-0910 | ND |
| 2018-07-18 | 9588-007-0930 | ND |
| 2019-07-12 | 9588-009-1045 | ND |