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EWG's Tap Water Database — 2021 UPDATE

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Endothall

Valencia Water Company

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

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND80ND
2015N/A00N/A
2016N/A00N/A
2017ND80ND
2018N/A00N/A
2019N/A00N/A

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
2014-03-269590-003-1000ND
2014-03-269590-062-0800ND
2014-03-269590-073-0820ND
2014-04-239590-052-0755ND
2014-06-049590-052-1000ND
2014-06-049590-062-0900ND
2014-06-259590-003-1030ND
2014-06-259590-073-0820ND
2017-03-029590-052-0950ND
2017-03-029590-062-0907ND
2017-03-239590-003-0805ND
2017-03-239590-073-0907ND
2017-06-019590-052-0855ND
2017-06-019590-062-0930ND
2017-06-229590-003-0850ND
2017-06-229590-073-0950ND