SuperPro Designer and EnviroPro Designer software tools can be used to model, evaluate, and optimize wastewater treatment processes and technologies. They allow modeling of both chemical manufacturing and end-of-pipe wastewater treatment. Key features include models for biological and physical wastewater treatment unit operations, as well as tracking the fate of chemicals through treatment. The software is useful for engineers, scientists, and others working in environmental consulting, wastewater treatment plant design and management, and evaluating pollution prevention options.