Silver
City of Opelousas Water System
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.
28
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 10 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 10 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-09-08 | AD96563 | ND |
| 2014-09-08 | AD96563 | ND |
| 2014-10-06 | AD98296 | ND |
| 2014-10-06 | AD98296 | ND |
| 2015-03-09 | 35178831003 | ND |
| 2015-03-09 | 35178831001 | ND |
| 2015-03-09 | 35178831002 | ND |
| 2015-03-09 | 35178831003 | ND |
| 2015-03-09 | 35178831005 | ND |
| 2015-03-09 | 35178831004 | ND |
| 2015-03-09 | 35178831002 | ND |
| 2015-03-09 | 35178831001 | ND |
| 2015-03-09 | 35178831004 | ND |
| 2015-03-09 | 35178831005 | ND |
| 2017-09-18 | AE18148 | ND |
| 2017-09-18 | AE18132 | ND |
| 2017-09-18 | AE18148 | ND |
| 2017-09-18 | AE18132 | ND |
| 2018-01-09 | AE20404 | ND |
| 2018-01-09 | AE20420 | ND |
| 2018-01-09 | AE20416 | ND |
| 2018-01-09 | AE20412 | ND |
| 2018-01-09 | AE20408 | ND |
| 2018-01-09 | AE20404 | ND |
| 2018-01-09 | AE20420 | ND |
| 2018-01-09 | AE20416 | ND |
| 2018-01-09 | AE20412 | ND |
| 2018-01-09 | AE20408 | ND |