Silver
Galva, City of
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.
9
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2020-02-04 | 1318638 | ND |
| 2020-02-04 | 1318636 | ND |
| 2020-02-10 | 1324049 | ND |
| 2020-09-28 | 1568500 | ND |
| 2021-12-20 | 2075993 | ND |
| 2021-12-21 | 2077551 | ND |
| 2023-01-23 | 2437153 | ND |
| 2023-01-23 | 2437154 | ND |
| 2023-01-23 | 2437112 | ND |