Silver
Tempe Water Supply Corporation 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.
8
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 | ND | 1 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-15 | AC38968 | ND |
| 2015-02-24 | AC81603 | ND |
| 2015-02-24 | AC81602 | ND |
| 2016-02-25 | AD25620 | ND |
| 2017-02-15 | AD70782 | ND |
| 2018-02-13 | AE13490 | ND |
| 2018-02-13 | AE13488 | ND |
| 2019-02-26 | AE55867 | ND |