Silver
Tud - Tuolumne Water System
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.
12
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-08-22 | CA5510003_003_003-201808220824 | ND |
| 2018-08-22 | CA5510003_002_002-201808220810 | ND |
| 2019-08-13 | CA5510003_002_002-201908131105 | ND |
| 2019-08-13 | CA5510003_003_003-201908131135 | ND |
| 2020-08-13 | CA5510003_002_002-202008130940 | ND |
| 2020-08-13 | CA5510003_003_003-202008130925 | ND |
| 2021-08-23 | CA5510003_002_002-202108231405 | ND |
| 2021-08-23 | CA5510003_003_003-202108231350 | ND |
| 2022-08-10 | CA5510003_002_002-202208100755 | ND |
| 2022-08-10 | CA5510003_003_003-202208100745 | ND |
| 2023-08-03 | CA5510003_002_002-202308030855 | ND |
| 2023-08-03 | CA5510003_003_003-202308030905 | ND |