Diquat
Belle Chasse Water District
Diquat is a herbicide used on potato crops and aquatic weeds.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 4 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 6 ppb
The EWG Health Guideline of 6 ppb for diquat was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cataracts.
EPA Maximum Contaminant
Level (MCL) 20 ppb
The legal limit for diquat, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-02-04 | AD88745 | ND |
2014-02-04 | AD88745 | ND |
2015-03-16 | 35179807003 | ND |
2015-03-16 | 35179807003 | ND |
2015-10-14 | 35212328001 | ND |
2015-10-14 | 35212328001 | ND |
2016-01-27 | 35226999003 | ND |
2016-01-27 | 35226999003 | ND |
2016-12-13 | 35283615003 | ND |
2016-12-13 | 35283615003 | ND |
2017-02-22 | 35296827003 | ND |
2017-02-22 | 35296827003 | ND |
2018-01-30 | 35371297002 | ND |
2018-01-30 | 35371297002 | ND |
2018-10-02 | 35421769001 | ND |
2018-10-02 | 35421769001 | ND |
2019-02-05 | 35446735001 | ND |
2019-02-05 | 35446735001 | ND |
2019-08-14 | 35490418001 | ND |
2019-08-14 | 35490418001 | ND |