Dinoseb
Bristol County Water Authority
NOTE: Bristol County Water Authority purchases water from City of Providence which is required to test for dinoseb. Sample information shown below was taken by City of Providence.
Dinoseb is a herbicide that causes birth defects and reproductive difficulties. It has been banned in the U.S. since 1986.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 8 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 8 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for dinoseb, established in 1992, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.
ppb = parts per billion
All test results
NOTE: Bristol County Water Authority purchases water from City of Providence which is required to test for dinoseb. Sample information shown below was taken by City of Providence.
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-21 | 1401191-01_PE21 | ND |
| 2014-09-08 | 1404926-01_PE21 | ND |
| 2017-01-31 | 1701086-01_PE21 | ND |
| 2017-08-28 | 1704153-01_PE21 | ND |