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EWG's Tap Water Database — 2021 UPDATE

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Endothall

Borough of Atglen

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015N/A00N/A
2016N/A00N/A
20172.64 ppb71ND - 18.5 ppb
2018ND20ND
2019ND10ND

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
2014-03-191077387001ND
2014-06-232014211001ND
2014-09-152029185001ND
2014-12-082044698001ND
2017-03-061578987918.5 ppb
2017-05-0116088406ND
2017-05-0116088434ND
2017-08-1416559918ND
2017-08-1416559907ND
2017-10-1016874758ND
2017-10-1016874684ND
2018-01-098011248-01ND
2018-05-018041267-01REND
2019-04-239043232-01ND