Silver
North Castle Water District #2
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.
18
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 | 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 |
|---|---|---|
| 2018-07-24 | AU15715-INS | ND |
| 2019-08-05 | AV16473-INS | ND |
| 2020-02-25 | AW03849-INS | ND |
| 2020-02-25 | AW03859-INS | ND |
| 2020-07-21 | AW13840-INS | ND |
| 2020-07-29 | AW14500-INS | ND |
| 2021-03-02 | AX04048-INS | ND |
| 2021-03-03 | AX04220-INS | ND |
| 2021-07-06 | AX13095-INS | ND |
| 2021-08-04 | AX15708-INS | ND |
| 2022-03-01 | AY03626-INS | ND |
| 2022-03-01 | AY03624-INS | ND |
| 2022-07-19 | AY12488-INS | ND |
| 2022-07-21 | AY12752-INS | ND |
| 2023-03-21 | AZ05021-INS | ND |
| 2023-03-21 | AZ05013-INS | ND |
| 2023-07-10 | AZ12340-INS | ND |
| 2023-08-28 | AZ15886-INS | ND |