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EWG's Tap Water Database — 2021 UPDATE

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Endothall

Assumption Parish Waterworks District 1

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

MORE ABOUT THIS CONTAMINANT

 

32

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
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND80ND

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
2014-02-03AD88681ND
2014-02-03AD88681ND
2014-04-14AD90510ND
2014-04-14AD90510ND
2014-07-21AD93831ND
2014-07-21AD93831ND
2014-10-06AD98268ND
2014-10-06AD98268ND
2015-03-3135181766003ND
2015-03-3135181766003ND
2015-09-1635208029001ND
2015-09-1635208029001ND
2016-03-1535234393001ND
2016-03-1535234393001ND
2016-09-1935266189008ND
2016-09-1935266189008ND
2017-01-3135292293003ND
2017-01-3135292293003ND
2017-10-1635342351003ND
2017-10-1635342351003ND
2018-01-2535370415008ND
2018-01-2535370415008ND
2018-07-2335406285001ND
2018-07-2335406285001ND
2019-01-2935445085001ND
2019-01-2935445085001ND
2019-07-2435484850001ND
2019-07-2435484850001ND
2019-08-2835494062001ND
2019-08-2835494062001ND
2019-10-1035504450001ND
2019-10-1035504450001ND