Silver
Union Parish Waterworks District 1
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 | ND | 6 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 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 |
|---|---|---|
| 2014-02-10 | AD88984 | ND |
| 2014-02-10 | AD88979 | ND |
| 2014-02-10 | AD88979 | ND |
| 2014-02-10 | AD88984 | ND |
| 2014-07-15 | AD93568 | ND |
| 2014-07-15 | AD93568 | ND |
| 2016-10-19 | 35272007001 | ND |
| 2016-10-19 | 35272007001 | ND |
| 2017-03-14 | 35301204001 | ND |
| 2017-03-14 | 35301204002 | ND |
| 2017-03-14 | 35301204002 | ND |
| 2017-03-14 | 35301204001 | ND |
| 2019-10-07 | 35504137001 | ND |
| 2019-10-07 | 35504137003 | ND |
| 2019-10-07 | 35504137002 | ND |
| 2019-10-07 | 35504137001 | ND |
| 2019-10-07 | 35504137003 | ND |
| 2019-10-07 | 35504137002 | ND |