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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

City of Richwood

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

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015ND80ND
2016ND100ND
2017ND100ND
2018ND80ND
2019ND100ND

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
2014-02-07AC41983ND
2014-03-05AC45655ND
2014-03-05AC45689ND
2014-04-17AC51039ND
2014-04-17AC51041ND
2014-04-17AC51145ND
2014-07-30AC61611ND
2014-07-30AC61610ND
2014-10-02AC68786ND
2014-10-02AC68792ND
2015-01-27AC77884ND
2015-01-27AC77895ND
2015-04-13AC87966ND
2015-04-13AC87967ND
2015-07-10AC99099ND
2015-07-10AC99105ND
2015-10-05AD09392ND
2015-10-05AD09388ND
2016-01-13AD17856ND
2016-01-13AD17859ND
2016-01-13AD17982ND
2016-01-13AD17979ND
2016-04-07AD32285ND
2016-04-07AD32283ND
2016-07-05AD42899ND
2016-07-05AD42901ND
2016-10-05AD52549ND
2016-10-05AD52545ND
2017-01-05AD63179ND
2017-01-05AD63191ND
2017-01-05AD63352ND
2017-01-05AD63348ND
2017-04-05AD78511ND
2017-04-05AD78512ND
2017-07-14AD89469ND
2017-07-14AD89472ND
2017-10-05AD99511ND
2017-10-05AD99507ND
2018-02-07AE12967ND
2018-02-07AE12998ND
2018-04-05AE21414ND
2018-04-05AE21424ND
2018-07-12AE33131ND
2018-07-12AE33126ND
2018-10-30AE44868ND
2018-10-30AE44871ND
2019-02-12AE54065ND
2019-02-12AE54053ND
2019-04-01AE60664ND
2019-04-01AE60663ND
2019-04-01AE60735ND
2019-07-08AE73519ND
2019-07-22AE75267ND
2019-07-22AE75273ND
2019-10-29AE87853ND
2019-10-29AE87852ND