Silver
Roxbury 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.
20
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 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 5 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | 3.17 ppb | 10 | 2 | ND - 17.0 ppb |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-16 | L4861828-6 | ND |
| 2014-01-16 | L4861828-8 | ND |
| 2014-01-16 | L4861828-12 | ND |
| 2014-01-16 | L4861828-2 | ND |
| 2014-01-16 | L4861828-10 | ND |
| 2017-01-05 | L6597237-2 | ND |
| 2017-01-05 | L6597237-4 | ND |
| 2017-01-05 | L6597237-10 | ND |
| 2017-01-05 | L6597237-8 | ND |
| 2017-01-05 | L6597237-6 | ND |
| 2019-01-16 | 42660301 | ND |
| 2019-01-16 | 42661101 | ND |
| 2019-01-16 | 42660901 | ND |
| 2019-01-16 | 42660501 | ND |
| 2019-01-16 | 42660701 | ND |
| 2019-05-15 | 9050699-01 | ND |
| 2019-05-15 | 9050697-01 | ND |
| 2019-05-20 | 9050903-01 | ND |
| 2019-05-20 | 9050904-01 | 14.7 ppb |
| 2019-05-20 | 9050902-01 | 17.0 ppb |