Know Your Environment. Protect Your Health.

Endothall

Ruth Water District

NOTE: Ruth Water District purchases water from Ely Municipal Water Department which is required to test for endothall. Sample information shown below was taken by Ely Municipal Water Department.

Endothall is a herbicide used to kill aquatic plants and algae. It's also used on potato and cotton crops.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020N/A00N/A
2021ND10ND
2022ND30ND
2023N/A00N/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

NOTE: Ruth Water District purchases water from Ely Municipal Water Department which is required to test for endothall. Sample information shown below was taken by Ely Municipal Water Department.

Date Lab ID Result
2019-09-26201910010466ND
2021-12-09202112150655ND
2022-05-12380-1966-1ND
2022-08-25810-36089-1ND
2022-08-25810-36089-2ND