Silver
City of Anacortes
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.
30
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 5 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | 0.200 ppb | 5 | 1 | ND - 1.000 ppb |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-14 | 30336 | ND |
| 2014-07-14 | 30337 | ND |
| 2014-07-14 | 30338 | ND |
| 2014-07-14 | 30339 | ND |
| 2014-07-14 | 30335 | ND |
| 2015-07-06 | 30271 | ND |
| 2015-07-06 | 30154 | ND |
| 2015-07-06 | 30155 | ND |
| 2015-07-06 | 30270 | ND |
| 2015-07-06 | 30272 | ND |
| 2016-07-17 | ND | |
| 2016-07-17 | ND | |
| 2016-07-17 | ND | |
| 2016-07-17 | ND | |
| 2016-07-17 | ND | |
| 2017-07-12 | ND | |
| 2017-07-12 | ND | |
| 2017-07-12 | ND | |
| 2017-07-12 | ND | |
| 2017-07-12 | ND | |
| 2018-07-16 | 1.000 ppb | |
| 2018-07-16 | ND | |
| 2018-07-16 | ND | |
| 2018-07-16 | ND | |
| 2018-07-16 | ND | |
| 2019-07-24 | ND | |
| 2019-07-24 | ND | |
| 2019-07-24 | ND | |
| 2019-07-24 | ND | |
| 2019-07-24 | ND |