Diquat
Prattville
Diquat is a herbicide used on potato crops and aquatic weeds.
39
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 | 17 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 13 | 0 | ND |
| 2018 | ND | 6 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-06-11 | L704198-2 | ND |
| 2014-06-11 | L704198-3 | ND |
| 2014-06-11 | L704198-7 | ND |
| 2014-06-11 | L704198-6 | ND |
| 2014-06-11 | L704198-5 | ND |
| 2014-06-11 | L704198-4 | ND |
| 2014-06-11 | L704198-8 | ND |
| 2014-06-11 | L704198-9 | ND |
| 2014-06-11 | L704198-1 | ND |
| 2014-06-11 | L704198-10 | ND |
| 2014-07-29 | L712728-4 | ND |
| 2014-07-29 | L712728-1 | ND |
| 2014-07-29 | L712728-3 | ND |
| 2014-07-29 | L712728-2 | ND |
| 2014-07-30 | L712729-3 | ND |
| 2014-07-30 | L712729-2 | ND |
| 2014-07-30 | L712729-1 | ND |
| 2015-08-11 | L782207-1 | ND |
| 2015-08-11 | L782207-3 | ND |
| 2015-08-12 | L782536-1 | ND |
| 2017-06-13 | L915682A-1 | ND |
| 2017-06-13 | L915682A-3 | ND |
| 2017-06-13 | L915682A-5 | ND |
| 2017-06-13 | L915682A-4 | ND |
| 2017-06-13 | L915682A-2 | ND |
| 2017-06-13 | L915682A-6 | ND |
| 2017-09-26 | L939384-4 | ND |
| 2017-09-26 | L939384-1 | ND |
| 2017-09-26 | L939384-2 | ND |
| 2017-09-26 | L939384-3 | ND |
| 2017-09-27 | L939700-3 | ND |
| 2017-09-27 | L939700-1 | ND |
| 2017-09-27 | L939700-2 | ND |
| 2018-04-25 | L989070-1 | ND |
| 2018-04-25 | L989070-4 | ND |
| 2018-04-26 | L989252-1 | ND |
| 2018-04-26 | L989252-3 | ND |
| 2018-08-29 | L1022209-01 | ND |
| 2018-08-29 | L1022209-2 | ND |