Endothall
Desert Sky Dwid
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 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-07-18 | 201807190400SB | ND |
| 2018-07-18 | 201807190400SC | ND |
| 2018-12-04 | 201812050077S | ND |
| 2018-12-18 | 550-115254-1 S | ND |
| 2019-02-20 | 201902210320SD | ND |
| 2019-02-20 | 201902210320SE | ND |
| 2019-04-09 | 201904100045SD | ND |
| 2019-05-14 | 201905140180S | ND |
| 2020-10-08 | 202010080356SB | ND |
| 2021-10-05 | 202110060118SB | ND |
| 2021-10-05 | 202110060118SC | ND |