Endothall
Telford Borough 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 | 19 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 10 | 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 |
|---|---|---|
| 2020-03-03 | 21850255.00 | ND |
| 2020-03-03 | 21850195.00 | ND |
| 2020-03-03 | 21850225.00 | ND |
| 2020-03-03 | 21850165.00 | ND |
| 2020-06-01 | 22419228.00 | ND |
| 2020-06-01 | 22419348.00 | ND |
| 2020-06-01 | 22419257.00 | ND |
| 2020-06-01 | 22419318.00 | ND |
| 2020-06-01 | 22419288.00 | ND |
| 2020-08-24 | 23002169.00 | ND |
| 2020-08-24 | 23002289.00 | ND |
| 2020-08-24 | 23002199.00 | ND |
| 2020-08-24 | 23002229.00 | ND |
| 2020-09-14 | 23002259.00 | ND |
| 2020-10-12 | 23185464.00 | ND |
| 2020-10-12 | 23185404.00 | ND |
| 2020-10-12 | 23185434.00 | ND |
| 2020-10-12 | 23185374.00 | ND |
| 2020-12-15 | 23540118.00 | ND |
| 2021-01-13 | 23715302.00 | ND |
| 2023-05-03 | 28902825.00 | ND |
| 2023-05-03 | 28902824.00 | ND |
| 2023-05-03 | 28902826.00 | ND |
| 2023-05-03 | 28902827.00 | ND |
| 2023-05-03 | 28902828.00 | ND |
| 2023-08-02 | 29500031.00 | ND |
| 2023-08-02 | 29500034.00 | ND |
| 2023-08-02 | 29500033.00 | ND |
| 2023-08-02 | 29500035.00 | ND |
| 2023-08-02 | 29500032.00 | ND |