Silver
City of Riverbank
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.
20
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 10 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 9 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-11-12 | 5810-012-1000 | ND |
| 2016-10-05 | 5810-002-1037 | ND |
| 2016-10-05 | 5810-006-1000 | ND |
| 2016-10-05 | 5810-012-1025 | ND |
| 2016-10-06 | 5810-007-0930 | ND |
| 2016-10-06 | 5810-005-0901 | ND |
| 2016-10-06 | 5810-004-0810 | ND |
| 2016-10-10 | 5810-003-0925 | ND |
| 2016-10-10 | 5810-008-0844 | ND |
| 2016-10-10 | 5810-009-1400 | ND |
| 2016-10-10 | 5810-010-0910 | ND |
| 2019-10-16 | 5810-012-1140 | ND |
| 2019-10-21 | 5810-003-1405 | ND |
| 2019-10-21 | 5810-006-1040 | ND |
| 2019-10-21 | 5810-008-1137 | ND |
| 2019-10-21 | 5810-009-1211 | ND |
| 2019-10-21 | 5810-010-1439 | ND |
| 2019-10-22 | 5810-007-1023 | ND |
| 2019-10-22 | 5810-004-0931 | ND |
| 2019-10-22 | 5810-002-1334 | ND |