Diquat
Shakopee
Diquat is a herbicide used on potato crops and aquatic weeds.
40
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 20 | 0 | ND |
| 2022 | ND | 20 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2021-08-26 | 4999007 | ND |
| 2021-08-26 | 4998989 | ND |
| 2021-08-26 | 4998991 | ND |
| 2021-08-26 | 4998993 | ND |
| 2021-08-26 | 4998995 | ND |
| 2021-08-26 | 4998997 | ND |
| 2021-08-26 | 4998999 | ND |
| 2021-08-26 | 4999001 | ND |
| 2021-08-26 | 4999003 | ND |
| 2021-08-26 | 4999005 | ND |
| 2021-12-08 | 9733-4 | ND |
| 2021-12-08 | 9580-1 | ND |
| 2021-12-08 | 9580-2 | ND |
| 2021-12-08 | 9580-3 | ND |
| 2021-12-08 | 9580-4 | ND |
| 2021-12-08 | 9732-1 | ND |
| 2021-12-08 | 9732-2 | ND |
| 2021-12-08 | 9733-1 | ND |
| 2021-12-08 | 9733-2 | ND |
| 2021-12-08 | 9733-3 | ND |
| 2022-02-02 | 13767-1 | ND |
| 2022-02-02 | 13767-2 | ND |
| 2022-02-02 | 13769-1 | ND |
| 2022-02-02 | 13769-2 | ND |
| 2022-02-02 | 13770-1 | ND |
| 2022-02-02 | 13770-2 | ND |
| 2022-02-02 | 13770-3 | ND |
| 2022-02-24 | 16045-3 | ND |
| 2022-02-24 | 16045-1 | ND |
| 2022-02-24 | 16045-2 | ND |
| 2022-05-09 | 24082-1 | ND |
| 2022-05-09 | 24082-2 | ND |
| 2022-05-09 | 24082-3 | ND |
| 2022-05-09 | 24082-4 | ND |
| 2022-05-09 | 24082-5 | ND |
| 2022-05-09 | 24082-6 | ND |
| 2022-05-09 | 24082-7 | ND |
| 2022-05-09 | 24082-8 | ND |
| 2022-05-09 | 24082-9 | ND |
| 2022-11-09 | 44329-1 | ND |