Know Your Environment. Protect Your Health.

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND40ND
2020ND60ND
2021ND30ND
2022ND10ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
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
2020-01-2135525783003ND
2020-01-2135525783002ND
2020-01-2135525783001ND
2020-03-1135537099001ND
2020-04-2235545475001ND
2020-10-1235585145001ND
2021-05-0535631376001ND
2021-05-0535631376002ND
2021-10-0535668364001ND
2022-04-1835712509001ND
2023-01-1835773982001ND
2023-01-1835773982002ND
2023-01-1835773982003ND
2023-04-0335790618001ND
2023-10-1635835809001ND