Silver
City of Granbury
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.
31
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 | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 9 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-26 | Q1406448007 | ND |
| 2014-07-09 | Q1426808015 | ND |
| 2014-10-22 | Q1453503009 | ND |
| 2015-06-18 | Q1522966020 | ND |
| 2015-06-18 | Q1522966019 | ND |
| 2015-06-18 | Q1522966018 | ND |
| 2016-01-14 | Q1601671011 | ND |
| 2016-01-14 | Q1601671010 | ND |
| 2016-01-14 | Q1601671009 | ND |
| 2016-01-14 | Q1601671008 | ND |
| 2016-01-14 | Q1601671007 | ND |
| 2016-01-14 | Q1601671006 | ND |
| 2016-05-31 | Q1621308001 | ND |
| 2017-07-06 | Q1727515013 | ND |
| 2017-09-19 | Q1744801016 | ND |
| 2017-09-19 | Q1744801001 | ND |
| 2017-10-04 | Q1748839030 | ND |
| 2017-10-04 | Q1748839029 | ND |
| 2017-10-04 | Q1748839028 | ND |
| 2017-10-04 | Q1748839027 | ND |
| 2017-10-04 | Q1748839026 | ND |
| 2017-10-04 | Q1748839002 | ND |
| 2018-05-02 | Q1817630004 | ND |
| 2018-05-02 | Q1817630003 | ND |
| 2018-05-02 | Q1817630019 | ND |
| 2019-03-18 | Q1911097025 | ND |
| 2019-03-18 | Q1911097024 | ND |
| 2019-03-18 | Q1911097023 | ND |
| 2019-03-18 | Q1911097022 | ND |
| 2019-03-18 | Q1911097021 | ND |
| 2019-05-09 | Q1923093020 | ND |