Silver
Caroline Utility System
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 |
|---|---|---|---|---|
| 2014 | 8.00 ppb | 1 | 1 | 8.00 ppb |
| 2015 | 7.67 ppb | 6 | 5 | ND - 12.0 ppb |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-11-03 | 12130MET | 8.00 ppb |
| 2015-03-03 | 460160-ANALYTICS | 12.0 ppb |
| 2015-03-03 | 460160-ANALYTICS | 10.00 ppb |
| 2015-05-18 | 00215-MID ATLANT | 12.0 ppb |
| 2015-08-05 | 460141-SUMMIT EN | 5.00 ppb |
| 2015-11-16 | 00215-MID ATLANT | 7.00 ppb |
| 2015-11-16 | 00215-MID ATLANT | ND |
| 2016-03-01 | 13540-EP010M | ND |
| 2016-06-27 | 13926MET | ND |
| 2017-02-22 | 14842MET | ND |
| 2017-02-22 | 14845MET | ND |
| 2017-11-13 | 15927MET | ND |
| 2018-02-27 | PR190MET | ND |
| 2018-05-14 | PR507-MET | ND |
| 2019-01-29 | PR1500MET | ND |
| 2019-09-23 | E190901520 | ND |