Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dalapon

Zachary Water System

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

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND100ND
2017N/A00N/A
2018ND20ND
2019ND160ND

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
2016-02-2935232145006ND
2016-02-2935232145006ND
2016-07-2635256952002ND
2016-07-2635256952001ND
2016-07-2635256952002ND
2016-07-2635256952004ND
2016-07-2635256952003ND
2016-07-2635256952001ND
2016-07-2635256952003ND
2016-07-2635256952004ND
2018-11-2635433146001ND
2018-11-2635433146001ND
2019-06-1835476846004ND
2019-06-1835476846003ND
2019-06-1835476846002ND
2019-06-1835476846001ND
2019-06-1835476846004ND
2019-06-1835476846001ND
2019-06-1835476846002ND
2019-06-1835476846003ND
2019-08-1235489898001ND
2019-08-1235489898004ND
2019-08-1235489898003ND
2019-08-1235489898002ND
2019-08-1235489898001ND
2019-08-1235489898004ND
2019-08-1235489898003ND
2019-08-1235489898002ND