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EWG's Tap Water Database — 2021 UPDATE

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Endothall

Ozark Utilities Board

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

MORE ABOUT THIS CONTAMINANT

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND160ND
2017N/A00N/A
2018N/A00N/A
2019ND160ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2016-02-18AB10063ND
2016-02-18AB10061ND
2016-02-18AB10071ND
2016-02-18AB10067ND
2016-06-13AB12393ND
2016-06-13AB12394ND
2016-06-13AB12396ND
2016-06-13AB12395ND
2016-08-03AB14008ND
2016-08-03AB14009ND
2016-08-03AB14010ND
2016-08-03AB14011ND
2016-12-27AB17041ND
2016-12-27AB17042ND
2016-12-27AB17039ND
2016-12-27AB17040ND
2019-02-07AB32884ND
2019-02-07AB32886ND
2019-02-07AB32887ND
2019-02-07AB32885ND
2019-06-19AB36110ND
2019-06-19AB36107ND
2019-06-19AB36108ND
2019-06-19AB36109ND
2019-08-27AB37952ND
2019-08-27AB37951ND
2019-08-27AB37953ND
2019-08-27AB37950ND
2019-11-21AB40300ND
2019-11-21AB40297ND
2019-11-21AB40298ND
2019-11-21AB40299ND