Silver
City of Antioch
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 | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-06 | 9590-001-1030 | ND |
| 2014-07-07 | 9590-005-1455 | ND |
| 2015-03-12 | 9590-001-1130 | ND |
| 2016-03-08 | 9590-001-1230 | ND |
| 2016-10-03 | 9590-008-1120 | ND |
| 2016-10-03 | 9590-010-1350 | ND |
| 2016-10-03 | 9590-016-0945 | ND |
| 2016-10-04 | 9590-004-1215 | ND |
| 2016-10-04 | 9590-009-1410 | ND |
| 2018-03-05 | 9590-001-0741 | ND |
| 2018-07-18 | 1644-009-0955 | ND |
| 2019-06-06 | 9590-001-0800 | ND |
| 2019-09-10 | 9590-001-1148 | ND |
| 2019-12-30 | 9590-001-1130 | ND |