Silver
Chowchilla City Water Department
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.
12
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 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-07-29 | 5810-003-0800 | ND |
| 2015-07-29 | 5810-008-0820 | ND |
| 2015-08-03 | 5810-010-0915 | ND |
| 2016-08-30 | 5810-001-0901 | ND |
| 2016-08-30 | 5810-019-0901 | ND |
| 2017-03-28 | 5810-011-1515 | ND |
| 2017-03-28 | 5810-020-1614 | ND |
| 2018-05-30 | 5810-023-1300 | ND |
| 2018-09-05 | 5810-003-0825 | ND |
| 2018-09-05 | 5810-010-0752 | ND |
| 2019-08-13 | 5810-019-0739 | ND |
| 2019-09-16 | 5810-011-1206 | ND |