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EWG's Tap Water Database — 2019 UPDATE

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Endothall

City of Scottsdale

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

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND210ND
2015ND30ND
2016N/A00N/A
2017ND190ND

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
2014-02-054020547-04SND
2014-02-054020547-03SND
2014-02-054020547-02SND
2014-02-054020547-01ND
2014-02-114020994-01ND
2014-02-124020997-01SND
2014-02-134021207-02SND
2014-02-134021207-01SND
2014-03-134031189-01SND
2014-06-034060399-01ND
2014-08-054080531-01ND
2014-08-054080527-01ND
2014-08-054080529-01ND
2014-08-074080785-03ND
2014-08-074080785-02ND
2014-08-074080785-01ND
2014-08-144081396-01ND
2014-08-214081971-01ND
2014-08-264082445-01ND
2014-08-274082450-01ND
2014-11-10201411100040SND
2015-01-265012122-01ND
2015-06-15201506150242SND
2015-07-28201507290355SND
2017-01-23201701230480SND
2017-01-31201701310419SND
2017-03-13201703130443SND
2017-04-11201704121085SND
2017-04-18201704180733SND
2017-05-03201705030393SND
2017-05-03201705030386SND
2017-05-11201705110565SND
2017-05-25201705250273SND
2017-08-09201708090677SND
2017-10-02201710020518SND
2017-10-10201710100211SND
2017-10-10201710100207SND
2017-10-23201710230327SND
2017-10-31201711010965SND
2017-10-31201711010947SND
2017-11-01201711010961SND
2017-11-01201711010957SND
2017-11-09201711090343SND