Endothall
Paw Glen Alsace Div
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 | ND | 4 | 0 | ND |
| 2020 | ND | 24 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 24 | 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 |
|---|---|---|
| 2019-07-22 | 45717501 | ND |
| 2019-07-22 | 45717601 | ND |
| 2019-07-22 | 45717401 | ND |
| 2019-07-29 | 46133302 | ND |
| 2020-05-04 | 22262925.00 | ND |
| 2020-05-04 | 22262896.00 | ND |
| 2020-05-06 | 22263064.00 | ND |
| 2020-05-11 | 22262983.00 | ND |
| 2020-05-11 | 22262954.00 | ND |
| 2020-05-11 | 22262809.00 | ND |
| 2020-05-13 | 22263035.00 | ND |
| 2020-05-13 | 22262867.00 | ND |
| 2020-05-13 | 22262838.00 | ND |
| 2020-05-18 | 22263377.00 | ND |
| 2020-05-19 | 22263435.00 | ND |
| 2020-05-19 | 22263406.00 | ND |
| 2020-08-04 | 22845347.00 | ND |
| 2020-08-04 | 22845376.00 | ND |
| 2020-08-06 | 22845318.00 | ND |
| 2020-08-06 | 22845497.00 | ND |
| 2020-08-11 | 22845468.00 | ND |
| 2020-08-11 | 22845410.00 | ND |
| 2020-08-11 | 22845439.00 | ND |
| 2020-08-12 | 22845289.00 | ND |
| 2020-08-12 | 22845905.00 | ND |
| 2020-08-12 | 22845876.00 | ND |
| 2020-08-13 | 22845963.00 | ND |
| 2020-08-18 | 22845934.00 | ND |
| 2023-05-04 | 28950166.00 | ND |
| 2023-05-04 | 28950195.00 | ND |
| 2023-05-04 | 28950137.00 | ND |
| 2023-05-04 | 28950108.00 | ND |
| 2023-05-04 | 28950079.00 | ND |
| 2023-05-11 | 28950256.00 | ND |
| 2023-05-11 | 28950021.00 | ND |
| 2023-05-11 | 28950227.00 | ND |
| 2023-05-11 | 28950314.00 | ND |
| 2023-05-11 | 28950285.00 | ND |
| 2023-05-11 | 28950050.00 | ND |
| 2023-05-11 | 28949992.00 | ND |
| 2023-08-03 | 29546859.00 | ND |
| 2023-08-03 | 29546835.00 | ND |
| 2023-08-03 | 29546883.00 | ND |
| 2023-08-03 | 29546922.00 | ND |
| 2023-08-03 | 29546806.00 | ND |
| 2023-08-09 | 29546777.00 | ND |
| 2023-08-09 | 29546997.00 | ND |
| 2023-08-09 | 29546748.00 | ND |
| 2023-08-09 | 29546719.00 | ND |
| 2023-08-10 | 29546983.00 | ND |
| 2023-08-10 | 29546954.00 | ND |
| 2023-08-10 | 29546690.00 | ND |