Endothall
Woodbury
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 16 | 0 | ND |
| 2022 | ND | 14 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2021-08-18 | 4990524 | ND |
| 2021-08-18 | 4990522 | ND |
| 2021-08-18 | 4990520 | ND |
| 2021-08-18 | 4990536 | ND |
| 2021-08-18 | 4990538 | ND |
| 2021-08-18 | 4990540 | ND |
| 2021-08-18 | 4990557 | ND |
| 2021-11-16 | 7789-2 | ND |
| 2021-11-16 | 7789-1 | ND |
| 2021-11-16 | 7789-3 | ND |
| 2021-11-16 | 7789-4 | ND |
| 2021-11-16 | 7789-5 | ND |
| 2021-11-16 | 7789-6 | ND |
| 2021-11-16 | 7789-7 | ND |
| 2021-11-16 | 7789-8 | ND |
| 2021-11-16 | 7789-9 | ND |
| 2022-02-14 | 14920-2 | ND |
| 2022-02-14 | 14930-3 | ND |
| 2022-02-14 | 14930-2 | ND |
| 2022-02-14 | 14930-1 | ND |
| 2022-02-14 | 14920-4 | ND |
| 2022-02-14 | 14920-3 | ND |
| 2022-02-14 | 14920-1 | ND |
| 2022-05-05 | 23869-7 | ND |
| 2022-05-05 | 23869-6 | ND |
| 2022-05-05 | 23869-5 | ND |
| 2022-05-05 | 23869-4 | ND |
| 2022-05-05 | 23869-3 | ND |
| 2022-05-05 | 23869-2 | ND |
| 2022-05-05 | 23869-1 | ND |
| 2023-12-28 | 89174-1 | ND |