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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Harris County Water Control and Improvement District 132

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

 

54

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
2015ND90ND
2016ND90ND
2017ND90ND
2018ND90ND
2019ND90ND

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
2014-02-12AC42431ND
2014-02-12AC42436ND
2014-02-12AC42523ND
2014-04-21AC51226ND
2014-04-21AC51230ND
2014-08-21AC64984ND
2014-08-21AC64981ND
2014-11-25AC73038ND
2014-11-25AC73077ND
2015-02-09AC79644ND
2015-02-09AC79691ND
2015-02-09AC79763ND
2015-06-10AC95372ND
2015-06-10AC95380ND
2015-08-06AD02910ND
2015-08-06AD02884ND
2015-11-16AD13785ND
2015-11-16AD13802ND
2016-02-18AD24245ND
2016-02-18AD24246ND
2016-02-18AD24469ND
2016-05-12AD36581ND
2016-05-12AD36591ND
2016-09-30AD52273ND
2016-09-30AD52277ND
2016-11-16AD58287ND
2016-11-16AD58286ND
2017-02-24AD72063ND
2017-02-24AD72064ND
2017-02-24AD72207ND
2017-04-26AD81160ND
2017-04-26AD81162ND
2017-08-01AD91590ND
2017-08-01AD91591ND
2017-10-02AD98783ND
2017-10-02AD98778ND
2018-02-12AE13234ND
2018-02-12AE13232ND
2018-02-12AE13376ND
2018-05-21AE26978ND
2018-05-21AE26983ND
2018-08-06AE35822ND
2018-08-06AE35824ND
2018-11-26AE46821ND
2018-11-26AE46824ND
2019-02-07AE53463ND
2019-02-07AE53462ND
2019-02-07AE53588ND
2019-05-13AE65942ND
2019-05-13AE65913ND
2019-08-27AE80987ND
2019-08-27AE80981ND
2019-12-02AE90805ND
2019-12-02AE90809ND