Endothall
Horsham Water&sewer 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 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2023-02-08 | 28349344.00 | ND |
| 2023-02-08 | 28349343.00 | ND |
| 2023-02-15 | 28349346.00 | ND |
| 2023-02-15 | 28349345.00 | ND |
| 2023-03-01 | 28520612.00 | ND |
| 2023-03-01 | 28520613.00 | ND |
| 2023-04-18 | 28701649.00 | ND |
| 2023-04-18 | 28701647.00 | ND |
| 2023-04-18 | 28701652.00 | ND |
| 2023-04-18 | 28701648.00 | ND |
| 2023-04-18 | 28701651.00 | ND |
| 2023-04-18 | 28701650.00 | ND |
| 2023-07-20 | 29301779.00 | ND |
| 2023-07-20 | 29301780.00 | ND |
| 2023-07-27 | 29301924.00 | ND |
| 2023-07-27 | 29301923.00 | ND |
| 2023-08-10 | 29496805.00 | ND |
| 2023-08-10 | 29496806.00 | ND |
| 2023-10-26 | 30070778.00 | ND |
| 2023-10-26 | 30070779.00 | ND |
| 2023-10-26 | 30070782.00 | ND |
| 2023-10-26 | 30070781.00 | ND |
| 2023-10-26 | 30070783.00 | ND |
| 2023-10-26 | 30070780.00 | ND |