Silver
Norwalk First Taxing 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.
6
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-10 | 214-13237IOC1 | ND |
| 2019-09-24 | 214-15434IOC1 | ND |
| 2020-10-08 | 214-17218IOC1 | ND |
| 2021-03-11 | 214-17908IOC1 | ND |
| 2022-04-21 | 214-19948IOC1 | ND |
| 2023-04-13 | 214-21975IOC1 | ND |