Silver
Allendale 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.
9
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | 16.0 ppb | 3 | 2 | ND - 38.0 ppb |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-07-07 | 2081650001 | ND |
| 2015-07-07 | 2081643001 | ND |
| 2015-07-07 | 2081649001 | ND |
| 2016-07-18 | 2159872001 | ND |
| 2016-07-18 | 2159873001 | ND |
| 2016-07-18 | 2159871001 | ND |
| 2018-07-16 | 8070628-01 | ND |
| 2018-07-17 | 8070712-02 | 9.94 ppb |
| 2018-07-17 | 8070712-01 | 38.0 ppb |