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EWG's Tap Water Database — 2021 UPDATE

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Endothall

Kalaheo-Koloa

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

 

27

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
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017ND10ND
2018ND20ND
2019ND240ND

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
2017-05-16ND
2018-01-29201801310036ND
2018-01-29201801000000ND
2019-01-30201901310193ND
2019-03-20201903220416ND
2019-03-20201903220488ND
2019-03-20201903220303ND
2019-03-20201903220415ND
2019-03-20201903220302ND
2019-03-22201903260283ND
2019-03-22201903260247ND
2019-03-22201903260250ND
2019-03-22201903260219ND
2019-03-22201903260218ND
2019-06-18201906200462ND
2019-08-20201908220600ND
2019-08-20201908220601ND
2019-08-20201908220544ND
2019-08-20201908220543ND
2019-08-21201908230494ND
2019-08-21201908230483ND
2019-08-21201908230361ND
2019-08-21201908230362ND
2019-08-21201908230493ND
2019-08-21201908230482ND
2019-08-26201908280583ND
2019-10-15201910170567ND