WEST Update 1

Modelling and virtual experimentation platform for water quality. WEST is the tool of choice for dynamic modelling and simulation of wastewater treatment plants (WWTP) and other types of water quality-related systems. 

It is designed for operators, engineers and researchers interested in studying physical, biological or chemical processes in WWTPs, sewer systems and rivers.

WEST offers an extensive, customisable model library, stellar simulation speed and advanced numerical algorithms, under the hood of a modern, state-of-the-art user interface. Control strategies can easily be implemented and reports can be generated automatically. Finally, a software development kit (SDK) for integration with other software systems as well as high performance computing (HPC) capabilities are available.

Important information when installing the 64 bit version
Contrary to the 32 bit installer, the 64 bit installer does not include a C compiler. As the availability of a C compiler is essential for WEST to be able to generate executable models, the 64 bit version of WEST should only be installed on machines that also have a working C compiler, capable of generating 64 bit binaries. A straightforward option is to install the Visual Studio Community C compiler. For more information, please view the installation guide.

After clicking the download button, the file will download as a zip file. Please run the setup.exe, choose the downloaded product, start the installation and follow the on-screen instructions.


File nameFile size
WEST_32_bit_2021_1.zip494 MB
WEST_64_bit_2021_1.zip791 MB

Download from US East
- If you are from North America, Latin America, Europe, the Middle East or Africa:

Download from Singapore
- If you are from the Asia-Pacific region: