Endothall
Swta - Main System
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 | 14 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 14 | 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 |
|---|---|---|
| 2020-04-07 | 22080436.00 | ND |
| 2020-04-07 | 22080466.00 | ND |
| 2020-04-07 | 22080526.00 | ND |
| 2020-04-07 | 22080406.00 | ND |
| 2020-04-07 | 22080496.00 | ND |
| 2020-04-07 | 22080376.00 | ND |
| 2020-04-07 | 22080346.00 | ND |
| 2020-07-28 | 22854597.00 | ND |
| 2020-07-28 | 22854657.00 | ND |
| 2020-07-28 | 22854747.00 | ND |
| 2020-07-28 | 22854627.00 | ND |
| 2020-07-28 | 22854567.00 | ND |
| 2020-07-28 | 22854687.00 | ND |
| 2020-07-28 | 22854717.00 | ND |
| 2023-05-02 | 28960651.00 | ND |
| 2023-05-02 | 28960650.00 | ND |
| 2023-05-02 | 28960653.00 | ND |
| 2023-05-02 | 28960649.00 | ND |
| 2023-05-02 | 28960652.00 | ND |
| 2023-05-02 | 28960648.00 | ND |
| 2023-06-27 | 29166827.00 | ND |
| 2023-08-08 | 29556337.00 | ND |
| 2023-08-08 | 29556339.00 | ND |
| 2023-08-08 | 29556334.00 | ND |
| 2023-08-08 | 29556336.00 | ND |
| 2023-08-08 | 29556340.00 | ND |
| 2023-08-08 | 29556335.00 | ND |
| 2023-08-08 | 29556338.00 | ND |