Silver
City of San Angelo
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 | 9 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-25 | AC44403 | ND |
| 2014-04-29 | AC52009 | ND |
| 2014-04-29 | AC52004 | ND |
| 2014-04-29 | AC52001 | ND |
| 2014-04-29 | AC52006 | ND |
| 2014-04-29 | AC52000 | ND |
| 2014-04-29 | AC51996 | ND |
| 2014-04-29 | AC52007 | ND |
| 2014-04-29 | AC52008 | ND |
| 2015-02-02 | AC79406 | ND |
| 2016-02-17 | AD24212 | ND |
| 2017-05-09 | Q1719085004 | ND |
| 2018-02-28 | Q1808687009 | ND |
| 2019-05-07 | Q1920785005 | ND |