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EWG's Tap Water Database — 2019 UPDATE

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Endothall

Philadelphia Water Department

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
2014ND60ND
2015ND30ND
2016ND30ND
2017ND60ND

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
2012-04-022619859ND
2012-04-022619857ND
2012-04-022619858ND
2013-05-151027470001ND
2013-05-151027470003ND
2013-05-151027470002ND
2014-04-07201404100426ND
2014-04-07201404100425ND
2014-04-07201404100424ND
2014-08-19201408230072ND
2014-08-19201408230071ND
2014-08-19201408230073ND
2015-06-1012887855ND
2015-06-1012887843ND
2015-06-1012887849ND
2016-06-0314411772ND
2016-06-0314411747ND
2016-06-0314411722ND
2017-05-1616101001ND
2017-05-1616100976ND
2017-05-1616100951ND
2017-07-2416420639ND
2017-07-2416420614ND
2017-07-2416420589ND