Silver
City of Houston Willow Chase
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 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2015-05-29 | AC93834 | ND |
| 2015-05-29 | AC93836 | ND |
| 2016-03-03 | AD26832 | ND |
| 2016-03-03 | AD26831 | ND |
| 2017-05-31 | AD86072 | ND |
| 2017-05-31 | AD86071 | ND |
| 2018-04-11 | AE21978 | ND |
| 2018-04-11 | AE21977 | ND |
| 2019-02-28 | AE56471 | ND |
| 2019-02-28 | AE56472 | ND |