Silver
City of Kerrville
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.
22
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 | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 8 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-10 | AC41871 | ND |
| 2015-01-28 | AC78082 | ND |
| 2016-02-01 | AD20978 | ND |
| 2016-02-01 | AD20973 | ND |
| 2016-04-18 | AD33309 | ND |
| 2016-07-05 | AD42869 | ND |
| 2016-10-24 | AD54249 | ND |
| 2016-10-24 | AD54250 | ND |
| 2017-02-13 | AD70299 | ND |
| 2017-04-06 | AD78702 | ND |
| 2017-05-08 | AD82958 | ND |
| 2017-05-08 | AD82960 | ND |
| 2017-05-08 | AD82959 | ND |
| 2017-05-09 | AD83256 | ND |
| 2017-05-09 | AD83251 | ND |
| 2017-05-09 | AD83255 | ND |
| 2018-01-08 | AE08000 | ND |
| 2019-01-14 | AE49497 | ND |
| 2019-01-14 | AE49496 | ND |
| 2019-04-08 | AE61295 | ND |
| 2019-07-15 | AE74306 | ND |
| 2019-10-03 | AE85612 | ND |