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EWG's Tap Water Database — 2019 UPDATE

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Endothall

City of Surprise - Mountain Vista

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

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND40ND
2015ND10ND
2016ND50ND
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 Lab ID Result
2012-01-262012012-04SND
2012-01-262012012-03SND
2012-01-262012012-02SND
2012-01-262012012-01SND
2013-01-233011767-04ND
2013-01-233011767-03ND
2013-01-233011767-02ND
2013-01-233011767-01ND
2014-01-224011817-02SND
2014-01-224011817-04SND
2014-01-224011817-03SND
2014-01-224011817-01SND
2015-01-215011694-04ND
2016-01-256012035-04TND
2016-01-256012035-03TND
2016-01-256012035-03SND
2016-01-256012035-02TND
2016-01-256012035-01TND
2017-01-307012591-01SND
2017-01-307012591-04SND
2017-01-307012591-03SND
2017-01-307012591-02SND