Endothall
Newberry 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 | 12 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 12 | 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 |
|---|---|---|
| 2020-04-23 | 22184183.00 | ND |
| 2020-04-23 | 22184147.00 | ND |
| 2020-04-30 | 22184210.00 | ND |
| 2020-05-19 | 22383210.00 | ND |
| 2020-05-19 | 22383305.00 | ND |
| 2020-05-19 | 22383246.00 | ND |
| 2020-08-13 | 22969978.00 | ND |
| 2020-08-13 | 22969930.00 | ND |
| 2020-08-27 | 22970400.00 | ND |
| 2020-08-27 | 22970326.00 | ND |
| 2020-08-27 | 22970364.00 | ND |
| 2020-08-27 | 22970438.00 | ND |
| 2023-04-04 | 28871720.00 | ND |
| 2023-04-04 | 28871750.00 | ND |
| 2023-04-04 | 28871780.00 | ND |
| 2023-04-12 | 28872004.00 | ND |
| 2023-04-12 | 28872034.00 | ND |
| 2023-04-12 | 28871971.00 | ND |
| 2023-07-13 | 29467476.00 | ND |
| 2023-07-13 | 29467621.00 | ND |
| 2023-07-18 | 29467662.00 | ND |
| 2023-07-18 | 29467537.00 | ND |
| 2023-08-08 | 29671325.00 | ND |
| 2023-08-08 | 29671326.00 | ND |