Silver
Manchester 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.
30
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 | 8 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 8 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-05 | AA82672-IOC1 | ND |
| 2018-02-05 | AA82673-IOC1 | ND |
| 2018-02-05 | AA82666-IOC1 | ND |
| 2018-02-06 | AA82689-IOC1 | ND |
| 2018-02-06 | AA82690-IOC1 | ND |
| 2018-02-07 | AA82711-IOC1 | ND |
| 2018-02-07 | AA82712-IOC1 | ND |
| 2018-02-23 | AA82899-IOCR | ND |
| 2019-05-03 | AA88242-IOC1 | ND |
| 2019-05-16 | AA88408-IOCR | ND |
| 2020-10-01 | AA94988-IOCR | ND |
| 2020-12-07 | AA95917-IOC1 | ND |
| 2020-12-07 | AA95918-IOC1 | ND |
| 2020-12-08 | AA95934-IOC1 | ND |
| 2020-12-08 | AA95935-IOC1 | ND |
| 2020-12-09 | AA95952-IOC1 | ND |
| 2020-12-09 | AA95953-IOC1 | ND |
| 2020-12-10 | AA95963-IOC1 | ND |
| 2021-11-04 | 211104-1-06IOC | ND |
| 2021-11-04 | 211104-1-04RAW IOC | ND |
| 2022-05-13 | 220513-1-04 RAW IOC | ND |
| 2022-06-03 | 220603-1-06IOC | ND |
| 2023-12-04 | 231204-3-01IOC | ND |
| 2023-12-04 | 231204-3-02 IOC | ND |
| 2023-12-05 | 231205-1-06 IOC | ND |
| 2023-12-05 | 231205-3-03 IOC | ND |
| 2023-12-05 | 231205-3-04 IOC | ND |
| 2023-12-05 | 231205-1-04 RAW IOC | ND |
| 2023-12-06 | 231206-3-05 IOC | ND |
| 2023-12-06 | 231206-3-06 IOC | ND |