Silver
Calcasieu Parish WW District No 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.
19
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | 5.60 ppb | 5 | 1 | ND - 28.0 ppb |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-07-16 | B1903028-001 | ND |
| 2019-07-16 | B1903028-001 | ND |
| 2020-02-10 | B2000676-001 | ND |
| 2020-02-10 | B2000676-002 | ND |
| 2020-02-10 | B2000676-003 | ND |
| 2020-02-10 | B2000676-004 | ND |
| 2020-11-23 | B2006215-001 | ND |
| 2020-11-23 | B2006215-002 | ND |
| 2021-05-13 | B2102368-002 | 28.0 ppb |
| 2021-05-13 | B2102368-001 | ND |
| 2021-06-22 | B2102863-001 | ND |
| 2021-09-27 | B2105098-001 | ND |
| 2021-12-13 | B2106648-001 | ND |
| 2022-02-21 | B2200780-001 | ND |
| 2022-05-02 | B2202093-001 | ND |
| 2023-02-06 | B2300531-001 | ND |
| 2023-02-06 | B2300531-002 | ND |
| 2023-02-06 | B2300531-003 | ND |
| 2023-02-06 | B2300531-004 | ND |