Silver
St. Louis City
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.
11
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-05-28 | AC23435 | ND |
| 2014-05-28 | AC23436 | ND |
| 2015-05-29 | CRCW052915IOC | ND |
| 2015-05-29 | HBCB052915IOC | ND |
| 2016-07-19 | HBCB071916IOC | ND |
| 2016-07-19 | CRCW071916IOC | ND |
| 2017-08-16 | CRCW081617IOC | ND |
| 2017-08-16 | HBBC081617IOC | ND |
| 2018-06-28 | CRCW062818IOC | ND |
| 2019-12-11 | CRCW121119IOC | ND |
| 2019-12-12 | HBCB121219IOC | ND |