Silver
South Grayson Special Utility 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.
10
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 | ND | 1 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-10-15 | Q1840862015 | ND |
| 2019-08-13 | Q1954236001 | ND |
| 2019-08-13 | Q1954236002 | ND |
| 2019-08-13 | Q1954236020 | ND |
| 2020-08-06 | Q2031194019 | ND |
| 2021-11-10 | Q2131631005 | ND |
| 2022-02-08 | Q2204251001 | ND |
| 2022-04-26 | Q2212466001 | ND |
| 2022-04-26 | Q2212466002 | ND |
| 2023-05-16 | Q2318439017 | ND |