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EWG's Tap Water Database — 2021 UPDATE

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Endothall

Utilities Inc. - North Park Water Supply

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

MORE ABOUT THIS CONTAMINANT

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015N/A00N/A
2016ND100ND
2017ND20ND
2018N/A00N/A
2019ND120ND

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
2014-02-19AD89214ND
2014-02-19AD89214ND
2016-05-1735245513002ND
2016-05-1735245513001ND
2016-05-1735245513005ND
2016-05-1735245513004ND
2016-05-1735245513003ND
2016-05-1735245513001ND
2016-05-1735245513002ND
2016-05-1735245513003ND
2016-05-1735245513004ND
2016-05-1735245513005ND
2017-03-1435301348024ND
2017-03-1435301348024ND
2019-02-2635451101001ND
2019-02-2635451101005ND
2019-02-2635451101004ND
2019-02-2635451101003ND
2019-02-2635451101002ND
2019-02-2635451101001ND
2019-02-2635451101005ND
2019-02-2635451101004ND
2019-02-2635451101003ND
2019-02-2635451101002ND
2019-10-1535505694001ND
2019-10-1535505694001ND