Silver
McAllen Public Utility
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.
12
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-27 | AC44971 | ND |
| 2014-04-25 | AC51817 | ND |
| 2015-03-12 | AC84005 | ND |
| 2015-06-10 | AC95340 | ND |
| 2016-03-23 | AD30054 | ND |
| 2016-06-30 | AD42622 | ND |
| 2017-02-09 | AD69854 | ND |
| 2017-02-09 | AD69859 | ND |
| 2018-02-13 | AE13493 | ND |
| 2018-02-13 | AE13494 | ND |
| 2019-02-14 | AE54716 | ND |
| 2019-02-14 | AE54715 | ND |