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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Fort Bend County MUD 25

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

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND10ND
2016ND20ND
2017ND40ND
2018ND50ND
2019ND170ND

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
2014-01-16AC39338ND
2014-01-16AC39347ND
2014-01-16AC39327ND
2014-05-16AC54426ND
2015-06-02AC94119ND
2016-01-19AD18709ND
2016-06-21AD41356ND
2017-01-12AD64848ND
2017-01-12AD64846ND
2017-01-12AD64849ND
2017-05-19AD85049ND
2018-05-16AE26573ND
2018-10-29AE44726ND
2018-10-29AE44727ND
2018-10-29AE44728ND
2018-10-29AE44729ND
2019-01-17AE50385ND
2019-01-17AE50387ND
2019-01-17AE50386ND
2019-01-17AE50383ND
2019-01-17AE50463ND
2019-04-09AE61568ND
2019-04-09AE61569ND
2019-04-09AE61609ND
2019-04-09AE61608ND
2019-07-25AE75915ND
2019-07-25AE75931ND
2019-07-25AE75928ND
2019-07-25AE75911ND
2019-10-21AE87019ND
2019-10-21AE87018ND
2019-10-21AE87022ND
2019-10-21AE87023ND