Diquat
City of Bogalusa Water System
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 | 10 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 4 | 0 | ND |
2017 | ND | 10 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-11-05 | AD99252 | ND |
2014-11-05 | AD99250 | ND |
2014-11-05 | AD99249 | ND |
2014-11-05 | AD99251 | ND |
2014-11-05 | AD99252 | ND |
2014-11-05 | AD99253 | ND |
2014-11-05 | AD99251 | ND |
2014-11-05 | AD99250 | ND |
2014-11-05 | AD99249 | ND |
2014-11-05 | AD99253 | ND |
2016-09-19 | 35267164002 | ND |
2016-09-19 | 35267164001 | ND |
2016-09-19 | 35267164001 | ND |
2016-09-19 | 35267164002 | ND |
2017-08-14 | 35331287005 | ND |
2017-08-14 | 35331287004 | ND |
2017-08-14 | 35331287003 | ND |
2017-08-14 | 35331287002 | ND |
2017-08-14 | 35331287001 | ND |
2017-08-14 | 35331287002 | ND |
2017-08-14 | 35331287003 | ND |
2017-08-14 | 35331287004 | ND |
2017-08-14 | 35331287005 | ND |
2017-08-14 | 35331287001 | ND |
2019-07-16 | 35483080001 | ND |
2019-07-16 | 35483080002 | ND |
2019-07-16 | 35483080001 | ND |
2019-07-16 | 35483080002 | ND |