Silver
Rison Waterworks
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-01-25 | Y160280012 | ND |
| 2016-01-25 | Y160280011 | ND |
| 2016-09-12 | Y162590022 | ND |
| 2016-10-17 | Y162950011 | ND |
| 2017-01-16 | Y170190058 | ND |
| 2017-06-07 | Y171590147 | ND |
| 2017-07-24 | Y172080025 | ND |
| 2017-10-04 | Y172780047 | ND |
| 2018-03-13 | Y180740015 | ND |
| 2018-03-21 | Y180810017 | ND |
| 2018-05-30 | Y181510043 | ND |
| 2018-07-23 | Y182080022 | ND |
| 2018-10-23 | Y182980023 | ND |
| 2019-01-22 | Y190240008 | ND |
| 2019-01-22 | Y190240007 | ND |
| 2019-06-24 | Y191790279 | ND |
| 2019-08-05 | Y192240001 | ND |
| 2019-10-22 | Y192970021 | ND |