Silver
City of Ripon
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.
10
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 | 1 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 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 |
|---|---|---|
| 2014-06-05 | 2625-022-1405 | ND |
| 2015-01-22 | 2625-003-0930 | ND |
| 2015-06-08 | 2625-007-0955 | ND |
| 2016-06-15 | 2625-010-0820 | ND |
| 2016-10-20 | 2625-020-1045 | ND |
| 2016-11-02 | 2625-024-1000 | ND |
| 2017-06-14 | 2625-010-0930 | ND |
| 2017-10-24 | 2625-020-1020 | ND |
| 2017-11-15 | 2625-024-0924 | ND |
| 2018-06-12 | 2625-007-0945 | ND |