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EWG's Tap Water Database — 2019 UPDATE

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Endothall

City of Arvada

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
2012ND20ND
2013ND20ND
2014ND40ND
2015ND20ND
2016ND20ND
2017ND40ND

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 Result
2012-05-14ND
2012-05-14ND
2013-07-09ND
2013-07-09ND
2014-05-19ND
2014-05-19ND
2014-08-18ND
2014-08-18ND
2015-08-04ND
2015-08-04ND
2016-08-22ND
2016-08-22ND
2017-05-16ND
2017-06-13ND
2017-08-30ND
2017-08-30ND