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EWG's Tap Water Database — 2021 UPDATE

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Endothall

City of Phoenix

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

MORE ABOUT THIS CONTAMINANT

 

103

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
2014ND220ND
2015ND30ND
2016ND20ND
2017ND440ND
2018ND250ND
2019ND70ND

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
2014-01-064010287-01SND
2014-01-08201401080635SND
2014-01-15201401150540SND
2014-01-15201401170165SND
2014-01-16201401160571SND
2014-01-16201401170156SND
2014-01-21201401210422SND
2014-01-21201401210440SND
2014-02-18201402180232SND
2014-02-19201402190365SND
2014-02-26201402260764SND
2014-04-07201404080430SND
2014-07-01201407010329SND
2014-07-01201407010387SND
2014-07-02201407020642SND
2014-07-08201407090999SND
2014-07-09201407090992SND
2014-07-15201407150422SND
2014-07-16201407160713SND
2014-07-22201407220314SND
2014-07-23201407230691SND
2014-07-23201407230698SND
2015-02-03201502030365SND
2015-07-08201507090342SND
2015-10-06201510060434SND
2016-01-05201601060239SND
2016-07-05201607050434SND
2017-01-04201701040662SND
2017-01-04201701050378SND
2017-01-04201701050398SND
2017-01-04201701050452SND
2017-01-04201701050477SND
2017-01-05201701050487SND
2017-01-10201701100452SND
2017-01-10201701100460SND
2017-01-11201701120605SND
2017-01-11201701120612SND
2017-01-17201701180216SND
2017-01-17201701180223SND
2017-01-18201701180239SND
2017-01-18201701180351SND
2017-01-25201701250390SND
2017-01-25201701250403SND
2017-02-01201702010376SND
2017-02-08201702080307SND
2017-02-22201702220345SND
2017-03-28201703280850SND
2017-04-27201704270391SND
2017-04-27201704270402SND
2017-07-05201707050526SND
2017-07-11201707110864SND
2017-07-11201707110870SND
2017-07-12201707130579SND
2017-07-12201707130585SND
2017-07-13201707130592SND
2017-07-13201707130602SND
2017-07-13201707130609SND
2017-07-13201707130639SND
2017-07-13201707130645SND
2017-07-18201707190870SND
2017-07-19201707190853SND
2017-07-26201707280156SND
2017-07-27201707280166SND
2017-07-27201707280179SND
2017-08-01201708020902SND
2017-08-01201708020917SND
2017-08-02201708030621SND
2017-08-02201708030627SND
2017-08-03201708030642SND
2017-10-10201710100360SND
2017-10-12201710120506SND
2018-04-03201804030479SND
2018-04-04201804040803SND
2018-04-04201804040810SND
2018-04-10201804100288SND
2018-04-12201804120899SND
2018-04-17201804180656SND
2018-04-19201804190478SND
2018-04-19201804190484SND
2018-04-26201804260507SND
2018-04-26201804260513SND
2018-05-09201805100699SND
2018-07-18201807180601SND
2018-07-26201807260414SND
2018-10-01201810010204SND
2018-10-02201810020710SND
2018-10-10201810100940SND
2018-10-10201810100946SND
2018-10-11201810110665SND
2018-10-16201810160508SND
2018-10-18201810190031SND
2018-10-24201810250276SND
2018-10-25201810250285SND
2018-10-30201810310415SND
2018-10-30201810310425SND
2018-11-29201811290362SND
2019-01-29201901290201SND
2019-01-30201901300428SND
2019-04-16201904160464SND
2019-04-24201904240286SND
2019-07-25201907250233SND
2019-10-17201910170329SND
2019-11-05201911051072SND