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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Intracoastal Water System West

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

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201416.8 ppb2216.8 ppb
2015ND100ND
2016ND40ND
20170.950 ppb42ND - 1.90 ppb
2018ND100ND
20191.55 ppb42ND - 3.10 ppb

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
2014-03-10AD8956716.8 ppb
2014-03-10AD8956716.8 ppb
2015-03-2335181102002ND
2015-03-2335181102002ND
2015-10-1435212298002ND
2015-10-1435212298003ND
2015-10-1435212298001ND
2015-10-1435212298003ND
2015-10-1435212298002ND
2015-10-1435212298001ND
2015-10-1935213246002ND
2015-10-1935213246002ND
2016-02-1535230016002ND
2016-02-1535230016002ND
2016-12-1335283969006ND
2016-12-1335283969006ND
2017-02-27352976190041.90 ppb
2017-02-27352976190041.90 ppb
2017-10-3035345279001ND
2017-10-3035345279001ND
2018-02-1935375364002ND
2018-02-1935375364002ND
2018-07-0935403785003ND
2018-07-0935403785003ND
2018-07-0935403785002ND
2018-07-0935403785001ND
2018-07-0935403785001ND
2018-07-0935403785002ND
2018-08-2135412901001ND
2018-08-2135412901001ND
2019-01-1635442897001ND
2019-01-1635442897001ND
2019-08-27354939820023.10 ppb
2019-08-27354939820023.10 ppb