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EWG's Tap Water Database — 2021 UPDATE

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Endothall

Norman

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

MORE ABOUT THIS CONTAMINANT

 

162

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
2017N/A00N/A
2018ND1080ND
2019ND540ND

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
2018-01-033847205ND
2018-01-033847252ND
2018-01-033847261ND
2018-01-033847270ND
2018-01-033847279ND
2018-01-093850194ND
2018-01-093850204ND
2018-01-093850218ND
2018-01-163853823ND
2018-01-163853832ND
2018-01-163853853ND
2018-01-163853863ND
2018-01-163853897ND
2018-01-223856688ND
2018-01-223856740ND
2018-01-223856756ND
2018-01-243858394ND
2018-01-293860649ND
2018-01-293860691ND
2018-01-293860700ND
2018-01-303861545ND
2018-02-073867322ND
2018-02-073867331ND
2018-02-073867382ND
2018-02-143872977ND
2018-02-153873626ND
2018-02-223878276ND
2018-04-023902021ND
2018-04-023902034ND
2018-04-033903127ND
2018-04-033903136ND
2018-04-053905306ND
2018-04-053905317ND
2018-04-053905328ND
2018-04-093907190ND
2018-04-163913530ND
2018-04-163913539ND
2018-04-183915869ND
2018-04-183915907ND
2018-04-183915917ND
2018-04-263922069ND
2018-04-263922078ND
2018-04-263922087ND
2018-04-263922096ND
2018-04-303924223ND
2018-05-073930015ND
2018-05-073930043ND
2018-05-073930055ND
2018-05-073930083ND
2018-05-093933229ND
2018-05-093933737ND
2018-05-213942190ND
2018-05-213942199ND
2018-05-303949660ND
2018-07-023980875ND
2018-07-043980833ND
2018-07-043980883ND
2018-07-103984440ND
2018-07-103984491ND
2018-07-103984504ND
2018-07-183993077ND
2018-07-183993097ND
2018-07-183993121ND
2018-07-183993134ND
2018-07-183995137ND
2018-07-254001417ND
2018-07-254001432ND
2018-07-254001456ND
2018-07-314006903ND
2018-07-314006952ND
2018-07-314007067ND
2018-07-314007075ND
2018-08-084016226ND
2018-08-084016298ND
2018-08-134020861ND
2018-08-134020862ND
2018-08-134020961ND
2018-08-204029320ND
2018-08-274036918ND
2018-08-274036960ND
2018-09-254069218ND
2018-10-154089676ND
2018-10-154089702ND
2018-10-154089779ND
2018-10-154090912ND
2018-10-154090927ND
2018-10-174092784ND
2018-10-174092793ND
2018-10-184095077ND
2018-10-184095087ND
2018-10-184095095ND
2018-10-184095104ND
2018-10-184099153ND
2018-10-224099180ND
2018-10-224099189ND
2018-10-224099206ND
2018-10-234099315ND
2018-10-234099324ND
2018-10-234099333ND
2018-10-234099342ND
2018-10-234099544ND
2018-10-244100851ND
2018-10-294104475ND
2018-10-294104493ND
2018-10-294104502ND
2018-10-304105904ND
2018-12-174152934ND
2018-12-184154371ND
2019-02-134197671ND
2019-02-134197752ND
2019-02-134197837ND
2019-04-024246271ND
2019-04-024246280ND
2019-04-024246321ND
2019-04-024246330ND
2019-04-034247840ND
2019-04-034247856ND
2019-04-034247878ND
2019-04-044249672ND
2019-04-044249683ND
2019-04-044249693ND
2019-04-084253360ND
2019-04-084253369ND
2019-04-084253378ND
2019-04-094254453ND
2019-04-094254697ND
2019-04-094254706ND
2019-04-104256582ND
2019-04-104256595ND
2019-04-104256606ND
2019-04-104256617ND
2019-04-174264161ND
2019-04-184266096ND
2019-04-294276347ND
2019-05-094289501ND
2019-07-294368519ND
2019-08-154388907ND
2019-09-114417908ND
2019-10-104452605ND
2019-10-104452616ND
2019-10-104452629ND
2019-10-154458270ND
2019-10-154458279ND
2019-10-154458329ND
2019-10-154458339ND
2019-10-154458447ND
2019-10-174460165ND
2019-11-064478563ND
2019-11-064478674ND
2019-11-064478698ND
2019-11-184489493ND
2019-11-184489502ND
2019-11-214494836ND
2019-11-214495320ND
2019-12-054505843ND
2019-12-054505853ND
2019-12-104510447ND
2019-12-104510456ND
2019-12-104510473ND
2019-12-104510526ND
2019-12-174517950ND
2019-12-204522414ND