Silver
Lake Arrowhead CSD
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.
52
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 | 8 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 16 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-06-26 | 3761-004-1108 | ND |
| 2014-07-09 | 3761-013-1204 | ND |
| 2014-07-09 | 3761-012-1228 | ND |
| 2014-07-09 | 3761-010-1221 | ND |
| 2014-07-09 | 3761-009-1238 | ND |
| 2014-07-09 | 3761-007-1253 | ND |
| 2014-07-09 | 3761-006-1216 | ND |
| 2014-07-09 | 3761-002-0843 | ND |
| 2015-04-22 | 3761-004-1110 | ND |
| 2015-07-08 | 3761-002-1007 | ND |
| 2015-07-08 | 3761-007-1112 | ND |
| 2015-07-08 | 3761-006-1047 | ND |
| 2015-07-08 | 3761-009-1105 | ND |
| 2015-07-08 | 3761-011-1042 | ND |
| 2015-07-08 | 3761-012-1056 | ND |
| 2015-08-12 | 3761-013-1010 | ND |
| 2016-06-08 | 3761-004-1057 | ND |
| 2016-07-13 | 3761-002-1302 | ND |
| 2016-07-14 | 3761-013-1010 | ND |
| 2016-07-14 | 3761-012-1033 | ND |
| 2016-07-14 | 3761-006-1027 | ND |
| 2016-07-14 | 3761-007-1052 | ND |
| 2016-07-14 | 3761-009-1043 | ND |
| 2017-02-23 | 3761-004-0900 | ND |
| 2017-04-19 | 3761-002-0955 | ND |
| 2017-04-19 | 3761-005-0921 | ND |
| 2017-06-07 | 3761-005-0924 | ND |
| 2017-06-07 | 3761-002-1221 | ND |
| 2017-06-07 | 3761-604-1152 | ND |
| 2017-07-18 | 3761-002-1136 | ND |
| 2017-07-19 | 3761-009-0837 | ND |
| 2017-07-19 | 3761-007-0905 | ND |
| 2017-07-19 | 3761-012-0936 | ND |
| 2017-07-19 | 3761-006-0920 | ND |
| 2017-07-19 | 3761-013-0917 | ND |
| 2017-07-19 | 3761-013-1011 | ND |
| 2017-09-06 | 3761-002-0900 | ND |
| 2017-09-06 | 3761-004-1204 | ND |
| 2017-09-06 | 3761-604-1315 | ND |
| 2018-02-14 | 3761-004-0925 | ND |
| 2018-05-23 | 3761-007-0930 | ND |
| 2018-07-11 | 3761-013-0932 | ND |
| 2018-07-11 | 3761-013-0917 | ND |
| 2018-07-11 | 3761-012-0955 | ND |
| 2018-07-11 | 3761-006-0944 | ND |
| 2018-08-15 | 3761-002-0855 | ND |
| 2019-02-27 | 3761-004-1000 | ND |
| 2019-07-10 | 3761-002-0843 | ND |
| 2019-07-17 | 3761-013-1000 | ND |
| 2019-07-17 | 3761-012-1025 | ND |
| 2019-07-17 | 3761-009-1030 | ND |
| 2019-07-17 | 3761-006-1018 | ND |