Silver
City of McFarland
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.
8
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 | ND | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-19 | 5867-011-1330 | ND |
| 2014-03-21 | 5867-006-1300 | ND |
| 2014-03-21 | 5867-014-1230 | ND |
| 2014-07-22 | 5867-016-0850 | ND |
| 2016-03-29 | 5867-011-1120 | ND |
| 2017-04-04 | 5867-016-1050 | ND |
| 2017-04-11 | 5867-006-1027 | ND |
| 2018-03-12 | 5867-011-1155 | ND |