Endothall
City of Hammond Water 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 | ND | 8 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 8 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 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 |
|---|---|---|
| 2018-02-19 | 35376160001 | ND |
| 2018-02-19 | 35376160004 | ND |
| 2018-02-19 | 35376160003 | ND |
| 2018-02-19 | 35376160002 | ND |
| 2018-02-19 | 35376160001 | ND |
| 2018-02-19 | 35376160004 | ND |
| 2018-02-19 | 35376160003 | ND |
| 2018-02-19 | 35376160002 | ND |
| 2019-07-23 | 35484829001 | ND |
| 2019-07-23 | 35484829001 | ND |
| 2021-01-19 | 35606207001 | ND |
| 2021-01-19 | 35606207002 | ND |
| 2021-01-19 | 35606207003 | ND |
| 2021-01-19 | 35606207004 | ND |
| 2021-02-24 | 35615063001 | ND |
| 2021-02-24 | 35615063002 | ND |
| 2021-02-24 | 35615063003 | ND |
| 2021-02-24 | 35615063004 | ND |
| 2022-02-14 | 35697800001EF | ND |