Endothall
Pennsylvania American Royersford
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 | 11 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 10 | 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 |
|---|---|---|
| 2020-04-08 | 22016216.00 | ND |
| 2020-04-08 | 22016100.00 | ND |
| 2020-04-15 | 22016301.00 | ND |
| 2020-04-15 | 22016273.00 | ND |
| 2020-04-15 | 22016245.00 | ND |
| 2020-07-07 | 22601590.00 | ND |
| 2020-08-04 | 22792302.00 | ND |
| 2020-08-05 | 22792279.00 | ND |
| 2020-08-11 | 22792223.00 | ND |
| 2020-08-11 | 22792251.00 | ND |
| 2020-08-18 | 22792672.00 | ND |
| 2023-05-01 | 28893376.00 | ND |
| 2023-05-01 | 28893404.00 | ND |
| 2023-05-01 | 28893310.00 | ND |
| 2023-05-11 | 28893348.00 | ND |
| 2023-05-11 | 28893432.00 | ND |
| 2023-07-06 | 29296055.00 | ND |
| 2023-08-10 | 29491103.00 | ND |
| 2023-08-10 | 29491070.00 | ND |
| 2023-08-10 | 29491153.00 | ND |
| 2023-08-10 | 29491066.00 | ND |