Silver
Municipality of Anchorage
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.
58
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 | 0.107 ppb | 2 | 1 | ND - 0.213 ppb |
| 2015 | 0.385 ppb | 13 | 1 | ND - 5.00 ppb |
| 2016 | ND | 11 | 0 | ND |
| 2017 | ND | 11 | 0 | ND |
| 2018 | ND | 11 | 0 | ND |
| 2019 | ND | 10 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-05-13 | CG*A1405164-01D | ND |
| 2014-09-09 | CG*A1409133-01B | 0.213 ppb |
| 2015-01-12 | CG*A1501154-01D | ND |
| 2015-08-18 | CG*3306215 | ND |
| 2015-08-18 | CG*3306216 | ND |
| 2015-08-18 | CG*3306217 | ND |
| 2015-08-18 | CG*3306156 | ND |
| 2015-08-18 | CG*3306214 | ND |
| 2015-08-19 | CG*3308380 | ND |
| 2015-08-20 | CG*3308713 | ND |
| 2015-08-20 | CG*3308715 | ND |
| 2015-08-20 | CG*3308717 | ND |
| 2015-08-20 | CG*3308719 | ND |
| 2015-09-23 | CG*3329851 | 5.00 ppb |
| 2015-10-30 | CG*3352000 | ND |
| 2016-07-13 | CG*280-85692-1 | ND |
| 2016-07-13 | CG*280-85692-4 | ND |
| 2016-07-13 | CG*280-85692-2 | ND |
| 2016-07-18 | CG*280-85921-1 | ND |
| 2016-07-18 | CG*280-85921-2 | ND |
| 2016-07-19 | CG*280-85945-1 | ND |
| 2016-08-02 | CG*280-86589-1 | ND |
| 2016-08-02 | CG*280-86590-1 | ND |
| 2016-08-29 | CG*3537234 | ND |
| 2016-08-29 | CG*3537235 | ND |
| 2016-11-08 | CG*3584825 | ND |
| 2017-08-21 | CG*3766069 | ND |
| 2017-08-21 | CG*3766063 | ND |
| 2017-08-21 | CG*3765074 | ND |
| 2017-08-21 | CG*3765103 | ND |
| 2017-08-28 | CG*3768872 | ND |
| 2017-08-28 | CG*3768880 | ND |
| 2017-08-28 | CG*3768896 | ND |
| 2017-08-28 | CG*3768904 | ND |
| 2017-08-29 | CG*3769505 | ND |
| 2017-10-02 | CG*3792411 | ND |
| 2017-10-31 | CG*440-195632-1 | ND |
| 2018-07-10 | CG*3995470 | ND |
| 2018-08-07 | CG*4022994 | ND |
| 2018-08-07 | CG*4022988 | ND |
| 2018-08-07 | CG*4022982 | ND |
| 2018-08-14 | CG*4031769 | ND |
| 2018-08-14 | CG*4031775 | ND |
| 2018-08-14 | CG*4031781 | ND |
| 2018-08-14 | CG*4031800 | ND |
| 2018-08-22 | CG*4041716 | ND |
| 2018-08-22 | CG*4041722 | ND |
| 2018-08-23 | CG*4041710 | ND |
| 2019-07-10 | ARS1-19-01810-00 | ND |
| 2019-07-10 | ARS1-19-01811-00 | ND |
| 2019-08-12 | 4386479 | ND |
| 2019-08-12 | 4386519 | ND |
| 2019-08-12 | 4386512 | ND |
| 2019-08-13 | 4388224 | ND |
| 2019-08-13 | 4388211 | ND |
| 2019-08-14 | 4389211 | ND |
| 2019-08-21 | 4397386 | ND |
| 2019-09-09 | X4416375 | ND |