Silver
Green Valley County Water District
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 8 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 8 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-06-15 | 5867-003-1120 | ND |
| 2016-06-15 | 5867-004-1045 | ND |
| 2016-06-15 | 5867-005-1035 | ND |
| 2016-06-15 | 5867-006-1150 | ND |
| 2016-06-15 | 5867-007-1214 | ND |
| 2016-06-15 | 5867-008-1055 | ND |
| 2016-06-15 | 5867-009-1135 | ND |
| 2016-06-15 | 5867-010-1105 | ND |
| 2019-06-12 | 5867-003-1340 | ND |
| 2019-06-12 | 5867-004-1330 | ND |
| 2019-06-12 | 5867-005-1307 | ND |
| 2019-06-12 | 5867-006-1257 | ND |
| 2019-06-12 | 5867-007-1233 | ND |
| 2019-06-12 | 5867-008-1323 | ND |
| 2019-06-12 | 5867-009-1246 | ND |
| 2019-06-12 | 5867-010-1316 | ND |