Silver
California Water Service (CWS) - Selma
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.
24
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 | 6 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-04 | 5810-038-1116 | ND |
| 2014-04-08 | 5810-018-1148 | ND |
| 2014-04-08 | 5810-005-1009 | ND |
| 2014-07-15 | 5810-001-0920 | ND |
| 2014-10-07 | 5810-014-1150 | ND |
| 2014-10-07 | 5810-004-1050 | ND |
| 2016-01-12 | 5810-036-1210 | ND |
| 2016-01-12 | 5810-021-1005 | ND |
| 2016-04-12 | 5810-013-0956 | ND |
| 2016-05-10 | 5810-023-1030 | ND |
| 2016-07-12 | 5810-022-1022 | ND |
| 2016-08-16 | 5810-010-1114 | ND |
| 2017-02-14 | 5810-038-1040 | ND |
| 2017-04-19 | 5810-018-1031 | ND |
| 2017-04-19 | 5810-005-0916 | ND |
| 2017-07-18 | 5810-001-1014 | ND |
| 2017-08-15 | 5810-004-0952 | ND |
| 2017-08-15 | 5810-014-1050 | ND |
| 2019-01-22 | 5810-036-1040 | ND |
| 2019-01-22 | 5810-021-1005 | ND |
| 2019-04-23 | 5810-023-1041 | ND |
| 2019-04-23 | 5810-013-1022 | ND |
| 2019-07-17 | 5810-022-0934 | ND |
| 2019-08-20 | 5810-010-1038 | ND |