Silver
Rapides Parish Waterworks District 3
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.
16
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 |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | 2.50 ppb | 4 | 1 | ND - 10.00 ppb |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-22 | 35381823001 | ND |
| 2018-03-22 | 35381823001 | ND |
| 2019-04-17 | 35463257001 | ND |
| 2019-04-17 | 35463257001 | ND |
| 2020-01-21 | B2000218-001 | ND |
| 2020-01-21 | B2000218-002 | ND |
| 2020-01-21 | B2000218-003 | ND |
| 2020-03-11 | B2001272-001 | ND |
| 2020-04-22 | B2001837-001 | ND |
| 2021-05-05 | B2102137-001 | ND |
| 2021-05-05 | B2102137-002 | ND |
| 2022-04-18 | B2201845-001 | ND |
| 2023-01-18 | B2300206-001 | ND |
| 2023-01-18 | B2300206-002 | ND |
| 2023-01-18 | B2300206-003 | 10.00 ppb |
| 2023-04-03 | B2301556-001 | ND |