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EWG's Tap Water Database — 2019 UPDATE

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Endothall

City of San Diego

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

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND120ND
2013ND90ND
2014N/A00N/A
2015ND30ND
2016ND90ND
2017ND90ND

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
2012-02-089437-001-0000ND
2012-02-089437-010-0000ND
2012-02-089437-006-0000ND
2012-04-239437-001-0000ND
2012-04-239437-010-0000ND
2012-04-239437-006-0000ND
2012-08-149437-001-0000ND
2012-08-149437-010-0000ND
2012-08-149437-006-0000ND
2012-12-119437-006-0000ND
2012-12-119437-010-0000ND
2012-12-179437-001-0000ND
2013-02-139437-006-0000ND
2013-02-139437-001-0000ND
2013-02-139437-010-0000ND
2013-06-059437-006-0000ND
2013-06-059437-001-0000ND
2013-06-059437-010-0000ND
2013-12-099437-010-0000ND
2013-12-099437-006-0000ND
2013-12-099437-001-0000ND
2015-02-189437-001-0000ND
2015-02-189437-010-0000ND
2015-02-189437-006-0000ND
2016-06-139437-001-0000ND
2016-06-139437-010-0000ND
2016-06-139437-006-0000ND
2016-08-179437-001-0000ND
2016-08-179437-010-0000ND
2016-08-179437-006-0000ND
2016-12-149437-006-0000ND
2016-12-149437-001-0000ND
2016-12-149437-010-0000ND
2017-02-159437-006-0000ND
2017-02-159437-001-0000ND
2017-02-159437-010-0000ND
2017-06-079437-006-0000ND
2017-06-079437-001-0000ND
2017-06-079437-010-0000ND
2017-11-159437-010-0000ND
2017-11-159437-001-0000ND
2017-11-159437-006-0000ND