Endothall
Tangipahoa Parish Water District
Endothall is a herbicide used to kill aquatic plants and algae. It's also used on potato and cotton crops.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 22 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 8 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 94 ppb
The EWG Health Guideline of 94 ppb for endothall 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 harm to the stomach and intestines.
EPA Maximum Contaminant
Level (MCL): 100 ppb
The legal limit for endothall, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1960s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-29 | 35371217004 | ND |
| 2018-01-29 | 35371217003 | ND |
| 2018-01-29 | 35371217002 | ND |
| 2018-01-29 | 35371217001 | ND |
| 2018-01-29 | 35371217001 | ND |
| 2018-01-29 | 35371217002 | ND |
| 2018-01-29 | 35371217003 | ND |
| 2018-01-29 | 35371217004 | ND |
| 2018-05-07 | 35391332001 | ND |
| 2018-05-07 | 35391332002 | ND |
| 2018-05-07 | 35391332002 | ND |
| 2018-05-07 | 35391332001 | ND |
| 2018-12-03 | 35434998002 | ND |
| 2018-12-03 | 35434998005 | ND |
| 2018-12-03 | 35434998003 | ND |
| 2018-12-03 | 35434998002 | ND |
| 2018-12-03 | 35434998001 | ND |
| 2018-12-03 | 35434998005 | ND |
| 2018-12-03 | 35434998004 | ND |
| 2018-12-03 | 35434998003 | ND |
| 2018-12-03 | 35434998001 | ND |
| 2018-12-03 | 35434998004 | ND |
| 2020-03-02 | 35535343001 | ND |
| 2020-11-16 | 35593782003 | ND |
| 2020-11-16 | 35593782004 | ND |
| 2020-11-16 | 35593782005 | ND |
| 2020-11-16 | 35593782006 | ND |
| 2020-11-16 | 35593782001 | ND |
| 2020-11-16 | 35593782002 | ND |
| 2021-01-14 | 35605056001 | ND |
| 2021-11-01 | 35675416005 | ND |
| 2021-11-01 | 35675416004 | ND |
| 2021-11-01 | 35675416003 | ND |
| 2021-11-01 | 35675416002 | ND |
| 2021-11-01 | 35675416001 | ND |
| 2023-03-28 | 35789166001 | ND |
| 2023-10-25 | 35837335001 | ND |
| 2023-10-25 | 35837335002 | ND |
| 2023-11-06 | 35840552001 | ND |
| 2023-11-06 | 35840552002 | ND |
| 2023-11-06 | 35840552003 | ND |
| 2023-11-06 | 35840552004 | ND |
| 2023-11-06 | 35840552005 | ND |