Silver
Danbury Water Department
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.
25
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 | 4 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-04-12 | 212690GE | ND |
| 2018-04-12 | 212687GE | ND |
| 2018-10-12 | IOC1 200508940 | ND |
| 2018-10-12 | IOC1 200508939 | ND |
| 2019-04-11 | IOC1 200528182 | ND |
| 2019-04-11 | IOC1 200528181 | ND |
| 2019-04-11 | IOCR 200528185 | ND |
| 2019-04-11 | IOCR 200528187 | ND |
| 2019-05-16 | IOCR 200532591A | ND |
| 2020-08-20 | IOCR 200587329 | ND |
| 2020-08-20 | IOCR 200587327 | ND |
| 2020-08-20 | IOC1 200587328 | ND |
| 2020-08-20 | IOC1 200587330 | ND |
| 2021-04-15 | IOC1 200613297 | ND |
| 2021-04-15 | IOC1 200613295 | ND |
| 2021-04-15 | IOCR 200613294 | ND |
| 2021-04-15 | IOCR 200613296 | ND |
| 2022-06-07 | 287329 | ND |
| 2022-06-07 | 287325 | ND |
| 2022-06-07 | 287323 | ND |
| 2022-06-07 | 287327 | ND |
| 2023-01-12 | 304532 | ND |
| 2023-01-12 | 304533 | ND |
| 2023-05-15 | N3E0590-02PPS | ND |
| 2023-05-15 | N3E0590-01PPS | ND |