Silver
Brownsville Public Utilities Board
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 |
|---|---|---|
| 2014-03-05 | AC45629 | ND |
| 2014-06-04 | AC55948 | ND |
| 2015-02-25 | AC81822 | ND |
| 2015-02-25 | AC81821 | ND |
| 2016-03-09 | AD27821 | ND |
| 2016-05-19 | AD37423 | ND |
| 2017-03-01 | AD72698 | ND |
| 2017-05-04 | AD82650 | ND |
| 2018-02-21 | AE14635 | ND |
| 2018-06-06 | AE28765 | ND |
| 2019-02-04 | AE52839 | ND |
| 2019-05-08 | AE65344 | ND |