Silver
Groton Utilities
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.
13
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 | 3 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-11-29 | 28467IOCR | ND |
| 2018-11-29 | 28430IOC1 | ND |
| 2019-11-20 | 30564IOCR | ND |
| 2019-11-20 | 30566IOC1 | ND |
| 2020-12-01 | 32781IOCR | ND |
| 2020-12-01 | 32783IOC1 | ND |
| 2021-10-27 | 34806IOCR | ND |
| 2021-10-27 | 34812IOC1 | ND |
| 2022-09-15 | 36588IOCR | ND |
| 2022-09-15 | 36587IOCR | ND |
| 2022-09-15 | 37093IOC1 | ND |
| 2023-09-14 | 38748IOCR | ND |
| 2023-09-14 | 38742IOC1 | ND |