Silver
Rancho Estates Mutual Water Company
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.
7
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 | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-07 | 1805-004-0910 | ND |
| 2014-07-07 | 1805-006-0830 | ND |
| 2014-07-07 | 1805-007-0845 | ND |
| 2017-05-31 | 1931-004-0750 | ND |
| 2017-10-31 | 4790-002-1530 | ND |
| 2018-04-24 | 4790-010-0733 | ND |
| 2018-06-05 | 4790-012-0700 | ND |