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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Union Parish Waterworks District 1

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.747 ppb62ND - 2.24 ppb
2015N/A00N/A
2016ND20ND
2017ND40ND
2018N/A00N/A
2019ND120ND

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
2014-02-10AD88999ND
2014-02-10AD88998ND
2014-02-10AD88999ND
2014-02-10AD88998ND
2014-07-15AD935792.24 ppb
2014-07-15AD935792.24 ppb
2016-10-1935272007001ND
2016-10-1935272007001ND
2017-03-1435301204001ND
2017-03-1435301204002ND
2017-03-1435301204002ND
2017-03-1435301204001ND
2019-10-0735504137003ND
2019-10-0735504137002ND
2019-10-0735504137001ND
2019-10-0735504137001ND
2019-10-0735504137002ND
2019-10-0735504137003ND
2019-11-1435512837001ND
2019-11-1435512837003ND
2019-11-1435512837002ND
2019-11-1435512837001ND
2019-11-1435512837003ND
2019-11-1435512837002ND