Silver
Twin Buttes Water System
NOTE: Twin Buttes Water System purchases water from City of San Angelo which is required to test for silver. Sample information shown below was taken by 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 |
|---|---|---|---|---|
| 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
NOTE: Twin Buttes Water System purchases water from City of San Angelo which is required to test for silver. Sample information shown below was taken by City of San Angelo.
| 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 |