Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Endothall

Rapides Parish Waterworks District 3

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

MORE ABOUT THIS CONTAMINANT

 

34

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
2014ND20ND
2015ND40ND
2016ND80ND
2017ND100ND
2018ND60ND
2019ND40ND

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
2014-03-10AD89666ND
2014-03-10AD89666ND
2015-07-0835196532003ND
2015-07-0835196532003ND
2015-09-1635208078001ND
2015-09-1635208078001ND
2016-07-1835255428002ND
2016-07-1835255428001ND
2016-07-1835255428002ND
2016-07-1835255428001ND
2016-07-1935255757003ND
2016-07-1935255757003ND
2016-11-1435277609008ND
2016-11-1435277609008ND
2017-03-0835299871005ND
2017-03-0835299871004ND
2017-03-0835299871003ND
2017-03-0835299871005ND
2017-03-0835299871004ND
2017-03-0835299871003ND
2017-07-1835324925002ND
2017-07-1835324925002ND
2017-11-0735347364002ND
2017-11-0735347364002ND
2018-02-1635375551002ND
2018-02-1635375551002ND
2018-03-2235381823001ND
2018-03-2235381823001ND
2018-09-1835418764001ND
2018-09-1835418764001ND
2019-04-1735463257001ND
2019-04-1735463257001ND
2019-08-2935494339001ND
2019-08-2935494339001ND