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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

City of Houston Utility District 5 - Kingwood

The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.

MORE ABOUT THIS CONTAMINANT

 

110

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
2014ND210ND
2015ND160ND
2016ND160ND
2017ND210ND
2018ND160ND
2019ND200ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 200 ppb

The legal limit for dalapon, established in 1992, was based on a toxicity study in laboratory animals published in 1960.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-19AC47653ND
2014-03-19AC47639ND
2014-03-19AC47638ND
2014-03-19AC47693ND
2014-03-19AC47694ND
2014-03-19AC47696ND
2014-03-19AC47692ND
2014-05-30AC55697ND
2014-05-30AC55620ND
2014-05-30AC55590ND
2014-05-30AC55653ND
2014-05-30AC55588ND
2014-08-15AC64159ND
2014-08-15AC64157ND
2014-08-15AC64155ND
2014-08-15AC64127ND
2014-08-15AC64042ND
2014-10-28AC70783ND
2014-10-28AC70768ND
2014-10-28AC70776ND
2014-10-28AC70769ND
2015-01-16AC76619ND
2015-01-16AC76625ND
2015-01-16AC76626ND
2015-01-16AC76621ND
2015-06-08AC94884ND
2015-06-08AC94888ND
2015-06-08AC94856ND
2015-06-08AC94885ND
2015-07-31AD02036ND
2015-07-31AD02018ND
2015-07-31AD02043ND
2015-07-31AD02040ND
2015-10-14AD10594ND
2015-10-14AD10593ND
2015-10-14AD10595ND
2015-10-14AD10596ND
2016-01-13AD17834ND
2016-01-13AD17836ND
2016-01-13AD17828ND
2016-01-13AD17830ND
2016-04-05AD31820ND
2016-04-05AD31816ND
2016-04-05AD31815ND
2016-04-05AD31802ND
2016-07-07AD43302ND
2016-07-07AD43310ND
2016-07-07AD43313ND
2016-07-07AD43303ND
2016-11-22AD59020ND
2016-11-22AD59012ND
2016-11-22AD59019ND
2016-11-22AD59011ND
2017-01-11AD64451ND
2017-01-11AD64457ND
2017-01-11AD64312ND
2017-01-11AD64313ND
2017-01-11AD64309ND
2017-01-11AD64308ND
2017-04-27AD81574ND
2017-04-27AD81575ND
2017-04-27AD81467ND
2017-04-27AD81465ND
2017-04-27AD81463ND
2017-04-27AD81468ND
2017-06-28AD88082ND
2017-07-27AD91085ND
2017-07-27AD91084ND
2017-07-27AD91052ND
2017-07-27AD91051ND
2017-10-13AE00786ND
2017-10-13AE00785ND
2017-10-13AE00770ND
2017-10-13AE00783ND
2018-01-31AE11859ND
2018-01-31AE11857ND
2018-01-31AE11860ND
2018-01-31AE11820ND
2018-04-16AE22494ND
2018-04-16AE22493ND
2018-04-16AE22492ND
2018-04-16AE22495ND
2018-07-30AE34888ND
2018-07-30AE34885ND
2018-07-30AE34882ND
2018-07-30AE34886ND
2018-10-19AE44093ND
2018-10-19AE44094ND
2018-10-19AE44096ND
2018-10-19AE44095ND
2019-01-22AE50662ND
2019-01-22AE50678ND
2019-01-22AE50661ND
2019-01-22AE50676ND
2019-03-12AE58114ND
2019-04-11AE61993ND
2019-04-11AE61990ND
2019-04-11AE61991ND
2019-04-11AE61992ND
2019-04-11AE62140ND
2019-07-22AE75258ND
2019-07-22AE75257ND
2019-07-22AE75269ND
2019-07-22AE75291ND
2019-07-22AE75394ND
2019-10-11AE86454ND
2019-10-11AE86450ND
2019-10-11AE86445ND
2019-10-11AE86448ND
2019-12-11AE92193ND