PHREEQC version 3 is the current version, Version 1.6 is OBSOLETE.
PHREEQC--A Computer Program for Speciation, Reaction-Path, Advective Transport, and Inverse Geochemical Calculations (Version 1.6)
Status: OBSOLETE, replaced by PHREEQC version 3
Project Home Page
Complete Water Resources Division Software
USGS Home Page
Water Resources Division Home Page
NRP Home Page
Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.
Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.
The URL of this page is:
Last modified: $Date: 2007/11/08 17:00:06 $
Visitor number 53061 since Jan 22, 1998.