Endothall
Valley Utilities Water Company Glendale
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 | 6 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 8 | 0 | ND |
| 2022 | ND | 4 | 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 |
|---|---|---|
| 2018-03-07 | 201803070712SB | ND |
| 2018-03-07 | 201803070712SA | ND |
| 2018-07-19 | 201807190554SA | ND |
| 2018-07-19 | 201807190554SB | ND |
| 2018-07-19 | 201807190554SC | ND |
| 2018-07-19 | 201807190554SD | ND |
| 2020-02-13 | 202002130477S | ND |
| 2020-02-13 | 202002130479S | ND |
| 2020-04-01 | 202004020017S | ND |
| 2020-04-01 | 202004020018S | ND |
| 2020-07-07 | 202007080121S | ND |
| 2020-07-07 | 202007080122S | ND |
| 2021-03-03 | 202103040014SA | ND |
| 2021-03-03 | 202103040014SB | ND |
| 2021-03-03 | 202103040014SC | ND |
| 2021-03-11 | 202103120008S | ND |
| 2021-04-14 | 202104150273SA | ND |
| 2021-04-14 | 202104150273SB | ND |
| 2021-04-14 | 202104150273SC | ND |
| 2021-04-14 | 202104150273SD | ND |
| 2022-02-02 | 202202030108S | ND |
| 2022-04-27 | 202204280128S | ND |
| 2022-07-07 | 380-7658-1 | ND |
| 2022-10-05 | 380-23186-1 | ND |