Silver
City of Orange
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 2 | 0 | ND |
2015 | ND | 8 | 0 | ND |
2016 | ND | 6 | 0 | ND |
2017 | ND | 11 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-03-12 | 4417-034-1155 | ND |
2014-03-24 | 4417-018-0855 | ND |
2015-02-25 | 4417-021-1110 | ND |
2015-02-25 | 4417-009-1210 | ND |
2015-02-25 | 4417-005-0840 | ND |
2015-02-25 | 4417-008-1235 | ND |
2015-03-25 | 4417-017-1110 | ND |
2015-04-28 | 4417-015-1025 | ND |
2015-04-28 | 4417-016-0930 | ND |
2015-04-28 | 4417-003-0835 | ND |
2016-01-26 | 4417-019-1220 | ND |
2016-04-14 | 4417-020-1040 | ND |
2016-04-25 | 4417-023-1115 | ND |
2016-07-27 | 4417-049-0850 | ND |
2016-10-06 | 4417-049-1030 | ND |
2016-12-13 | 4417-022-1015 | ND |
2017-01-11 | 4417-049-0920 | ND |
2017-01-11 | 4417-018-0840 | ND |
2017-01-31 | 4417-021-1050 | ND |
2017-02-14 | 4417-021-1110 | ND |
2017-02-14 | 4417-019-1130 | ND |
2017-04-05 | 4417-049-0950 | ND |
2017-04-25 | 4417-022-1000 | ND |
2017-04-25 | 4417-008-0920 | ND |
2017-05-18 | 4417-022-0950 | ND |
2017-05-18 | 4417-034-0820 | ND |
2017-05-23 | 4417-008-1005 | ND |
2018-03-06 | 4417-017-1115 | ND |
2018-03-06 | 4417-009-1220 | ND |
2018-05-09 | 4417-016-1005 | ND |
2019-01-14 | 4417-019-0915 | ND |
2019-01-14 | 4417-023-0840 | ND |
2019-04-22 | 4417-021-1010 | ND |
2019-04-22 | 4417-034-1200 | ND |
2019-04-22 | 4417-049-0935 | ND |
2019-06-18 | 4417-020-0940 | ND |