Silver
City of La Porte
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.
18
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 | N/A | 0 | 0 | N/A |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-01-20 | AD18833 | ND |
| 2016-01-20 | AD18830 | ND |
| 2016-01-20 | AD18834 | ND |
| 2016-01-20 | AD18835 | ND |
| 2016-01-20 | AD18838 | ND |
| 2016-04-12 | AD32721 | ND |
| 2017-05-01 | AD81702 | ND |
| 2017-05-01 | AD81717 | ND |
| 2017-05-01 | AD81718 | ND |
| 2017-05-01 | AD81701 | ND |
| 2017-05-01 | AD81719 | ND |
| 2017-05-01 | AD81700 | ND |
| 2019-01-09 | AE49174 | ND |
| 2019-01-09 | AE49176 | ND |
| 2019-01-09 | AE49177 | ND |
| 2019-01-09 | AE49173 | ND |
| 2019-01-09 | AE49175 | ND |
| 2019-01-09 | AE49172 | ND |