Silver
Castroville Community Services 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.
8
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-02-01 | 2385-003-1035 | ND |
| 2016-02-01 | 2385-004-0950 | ND |
| 2016-02-01 | 2385-005-1010 | ND |
| 2017-07-06 | 2385-004-1520 | ND |
| 2017-10-05 | 2385-004-1505 | ND |
| 2019-01-28 | 2385-003-1035 | ND |
| 2019-01-28 | 2385-004-1055 | ND |
| 2019-01-28 | 2385-005-1050 | ND |