Silver
City of Patterson
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.
14
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-05-13 | 5867-014-1000 | ND |
| 2014-06-10 | 5867-018-0930 | ND |
| 2014-08-26 | 5867-012-0749 | ND |
| 2016-02-02 | 5867-016-0835 | ND |
| 2016-06-21 | 5867-002-0740 | ND |
| 2016-06-21 | 5867-005-0905 | ND |
| 2016-06-21 | 5867-009-1030 | ND |
| 2017-05-09 | 5867-014-0938 | ND |
| 2017-06-06 | 5867-018-0950 | ND |
| 2017-08-01 | 5867-012-0753 | ND |
| 2019-02-05 | 5867-016-0945 | ND |
| 2019-06-04 | 5867-002-0850 | ND |
| 2019-06-04 | 5867-005-1050 | ND |
| 2019-06-04 | 5867-009-0925 | ND |