Silver
City of Colton
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.
26
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 | 11 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 10 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-08-14 | 3761-030-0950 | ND |
| 2014-08-14 | 3761-024-1300 | ND |
| 2014-08-14 | 3761-023-1315 | ND |
| 2014-08-14 | 3761-021-1000 | ND |
| 2014-08-14 | 3761-017-1410 | ND |
| 2014-08-14 | 3761-015-1030 | ND |
| 2014-08-14 | 3761-014-1025 | ND |
| 2014-08-14 | 3761-012-1010 | ND |
| 2014-08-14 | 3761-011-1040 | ND |
| 2014-08-14 | 3761-008-1045 | ND |
| 2014-09-17 | 3761-022-1315 | ND |
| 2015-08-03 | 3761-010-0930 | ND |
| 2016-06-13 | 3761-016-1030 | ND |
| 2017-09-06 | 3761-024-1245 | ND |
| 2017-09-06 | 3761-030-1210 | ND |
| 2017-09-06 | 3761-023-1140 | ND |
| 2017-09-06 | 3761-021-1230 | ND |
| 2017-09-06 | 3761-016-1520 | ND |
| 2017-09-06 | 3761-015-1115 | ND |
| 2017-09-06 | 3761-014-1100 | ND |
| 2017-09-06 | 3761-011-1130 | ND |
| 2017-09-06 | 3761-010-1455 | ND |
| 2017-09-06 | 3761-008-1125 | ND |
| 2018-06-12 | 3761-023-1000 | ND |
| 2018-09-06 | 3761-012-1330 | ND |
| 2019-07-30 | 3761-017-0830 | ND |