Silver
Harris County FWSD 61
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.
10
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 | 1 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-04 | AC41227 | ND |
| 2016-01-12 | AD17500 | ND |
| 2016-01-12 | AD17499 | ND |
| 2016-01-12 | AD17501 | ND |
| 2017-02-02 | AD68308 | ND |
| 2017-02-02 | AD68320 | ND |
| 2017-02-02 | AD68314 | ND |
| 2019-01-09 | AE49169 | ND |
| 2019-01-09 | AE49170 | ND |
| 2019-01-09 | AE49168 | ND |