Endothall
Brodhead Creek Reg Water Authority
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 | ND | 4 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 9 | 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 |
|---|---|---|
| 2020-04-13 | 22045615.00 | ND |
| 2020-04-15 | 22045616.00 | ND |
| 2020-08-17 | 22821721.00 | ND |
| 2020-08-17 | 22821720.00 | ND |
| 2021-10-20 | 25427442.00 | ND |
| 2022-02-23 | 26136995.00 | ND |
| 2022-05-23 | 26671653.00 | ND |
| 2022-08-22 | 27257972.00 | ND |
| 2023-05-05 | 28924105.00 | ND |
| 2023-05-05 | 28924104.00 | ND |
| 2023-05-05 | 28924106.00 | ND |
| 2023-06-14 | 29130278.00 | ND |
| 2023-06-14 | 29130277.00 | ND |
| 2023-06-14 | 29130279.00 | ND |
| 2023-08-14 | 29521704.00 | ND |
| 2023-08-14 | 29521703.00 | ND |
| 2023-08-16 | 29521705.00 | ND |