Silver
Bristol Water Department
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 |
|---|---|---|---|---|
| 2014 | ND | 5 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-03 | E404362-1IOC1 | ND |
| 2014-06-16 | E406F26-1IOC1 | ND |
| 2014-06-16 | E406F26-2IOC1 | ND |
| 2014-06-16 | E406F26-3IOC1 | ND |
| 2014-06-16 | E406F26-4IOC1 | ND |
| 2015-04-08 | E504788-1IOC1 | ND |
| 2015-09-02 | E509279-1IOC1 | ND |
| 2016-04-13 | E604D94-1IOC1 | ND |
| 2016-12-08 | E612969-1IOC1 | ND |
| 2017-02-06 | E702375-4IOC1 | ND |
| 2017-02-06 | E702375-2IOC1 | ND |
| 2017-02-06 | E702375-3IOC1 | ND |
| 2017-02-06 | E702375-1IOC1 | ND |
| 2017-07-07 | D7G0496-01IOCR | ND |
| 2018-03-07 | D8C0468-01IOC | ND |
| 2018-03-07 | D8C0471-01IOCR | ND |
| 2019-03-27 | D9C2626-01IOCR | ND |
| 2019-05-15 | D9E1655-01IOCR | ND |
| 2019-05-15 | D9E1655-01IOC | ND |
| 2019-10-28 | D9J2582-01IOCR | ND |