Silver
City of Lewisville
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 |
|---|---|---|
| 2014-02-25 | Q1406115006 | ND |
| 2014-02-25 | Q1406115007 | ND |
| 2015-03-04 | Q1508286001 | ND |
| 2015-05-14 | Q1518043010 | ND |
| 2016-01-26 | Q1603378013 | ND |
| 2016-01-26 | Q1603378014 | ND |
| 2017-01-10 | Q1701018008 | ND |
| 2017-04-11 | Q1714978005 | ND |
| 2018-04-12 | Q1815190010 | ND |
| 2018-04-12 | Q1815190002 | ND |
| 2019-01-22 | Q1903244013 | ND |
| 2019-01-22 | Q1903244024 | ND |