Installing the South African Water Quality Guidelines for Freshwater Ecosystems - Version 2
Installing the DSS is a straightforward Windows application install
Technical Note: This application was developed in Lazarus IDE using the 32bit Free Pascal Compiler and compiled into an installer using Inno Setup (http://www.innosetup.com) via the Inno Script Studio application (https://www.kymoto.org/).
The installer and application are unsigned. Windows will moan, but the program will work fine. Do ensure that you downloaded them from the official IWR website /iwr and verify one of the checksums given below.
Application version is 1.0.0.50 dated 2026-02-02
If you want to verify the downloaded file the MD5 checksum is (WQGDSS-setup.exe) = 07e869f5f3b22a105c7cf8d503fdf204
The SHA256 checksum is (WQGDSS-setup.exe) = b0cd4591c127d747b64061500428aa5c0bd19b937aae2ef233c2880973bc7973
To learn and use the WQGDSS you need some addtional files, download and extract these zip files:
Last Modified: Wed, 04 Feb 2026 08:49:17 SAST