Jump to main content.

VLEACH for Windows

See Also


VLEACH is a one-dimensional, finite difference model for making preliminary assessments of the effects on groundwater from the leaching of volatile, sorbed contaminants through the vadose zone. The program models four main processes: liquid-phase advection, solid-phase sorption, vapor-phase diffusion, and three-phase equilibration. In an individual run, VLEACH can simulate leaching in a number of distinct polygons, which may differ in terms of soil properties, recharge rates, depth of water, or initial conditions. Modeling results in an overall, area-weighted assessment of ground-water impact.


Version 2.2a
Release Date May 2007
Development Status general release
Development Information  
Operating System Windows
Development Language  
Intended Audience  
Key Words  
Related Web Sites  

Minimum System Requirements

To run VLEACH, you will need the following:

Unzipping SoftwareExit EPA disclaimer

You will need unzipping (compression) software to uncompress ZIP files. If you need to load unzipping software on your computer, free software is available for download on the internet at the following sites:


VLEACH Setup (EXE)(5.59 MB)

VLEACH, A One-Dimensional Finite Difference Vadose Zone Leaching Model, Version 2.2 (PDF) (70 pp, 336 KB) 1997

Installation Instructions

  1. Download the VLEACHsetup.exe file onto your harddrive.
  2. Run the VLEACHsetup.exe file. You will be guided through the installation process.
  3. The User's Manual (vleach.pdf) comes with the installation and is accessible from within the program.

If your operating system is older than Windows XP, you will need to download and install the following file:

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

Office of Research & Development | National Risk Management Research Laboratory

Local Navigation

Jump to main content.