Diquat
Jefferson Parish
Diquat is a herbicide used on potato crops and aquatic weeds.
48
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 | ND | 12 | 0 | ND |
| 2019 | ND | 12 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 6 | 0 | ND |
| 2023 | ND | 6 | 0 | ND |
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 |
|---|---|---|
| 2018-03-15 | 35380393003 | ND |
| 2018-03-15 | 35380393001 | ND |
| 2018-03-15 | 35380393002 | ND |
| 2018-03-15 | 35380393003 | ND |
| 2018-03-15 | 35380393002 | ND |
| 2018-03-15 | 35380393001 | ND |
| 2018-08-15 | 35411635002 | ND |
| 2018-08-15 | 35411635001 | ND |
| 2018-08-15 | 35411635003 | ND |
| 2018-08-15 | 35411635003 | ND |
| 2018-08-15 | 35411635002 | ND |
| 2018-08-15 | 35411635001 | ND |
| 2019-04-11 | 35461219001 | ND |
| 2019-04-11 | 35461218001 | ND |
| 2019-04-11 | 35461217001 | ND |
| 2019-04-11 | 35461217001 | ND |
| 2019-04-11 | 35461218001 | ND |
| 2019-04-11 | 35461219001 | ND |
| 2019-08-01 | 35486654001 | ND |
| 2019-08-01 | 35486656001 | ND |
| 2019-08-01 | 35486659001 | ND |
| 2019-08-01 | 35486656001 | ND |
| 2019-08-01 | 35486654001 | ND |
| 2019-08-01 | 35486659001 | ND |
| 2020-03-26 | 35540021001 | ND |
| 2020-03-26 | 35540015001 | ND |
| 2020-03-26 | 35540013001 | ND |
| 2020-10-08 | 35583706001 | ND |
| 2020-10-08 | 35583707001 | ND |
| 2020-10-08 | 35583709001 | ND |
| 2021-01-28 | 35608080001 | ND |
| 2021-01-28 | 35608082001 | ND |
| 2021-01-28 | 35608086001 | ND |
| 2021-10-14 | 35671095001 | ND |
| 2021-10-14 | 35671096001 | ND |
| 2021-10-14 | 35671098001 | ND |
| 2022-01-25 | 35692991001 | ND |
| 2022-01-25 | 35692990001 | ND |
| 2022-01-25 | 35692989001 | ND |
| 2022-07-27 | 35735696001 | ND |
| 2022-07-27 | 35735695001 | ND |
| 2022-07-27 | 35735694001 | ND |
| 2023-01-11 | 35772258001 | ND |
| 2023-01-11 | 35772259001 | ND |
| 2023-01-11 | 35772260001 | ND |
| 2023-11-16 | 35842431001 | ND |
| 2023-11-16 | 35842438001 | ND |
| 2023-11-16 | 35842442001 | ND |