WATER is an interface that deals with the optimum design of a distributed wastewater network. Multicomponent streams are considered to be processed by units for reducing the concentration of several contaminants in order to meet the environmental discharge limit. The model gives rise to a nonconvex nonlinear program, which is solved through a method by Galan and Grossmann (1998) that yields a global or near global optima. This interface is written in language C and runs on Windows 98 or Windows-NT. The way this interface works is through different menus; it is flexible and easy to use. Given the data of the problem , WATER creates a new GAMS file containing the model equations and optimizes the problem.
WATER has been developed by Gabriela Garcia-Ayala under the supervision of Ignacio Grossmann.

References for WATER:

Berta Galqan and I. E. Grossmann , Optimal Design of Distributed Wastewater Treatment Networks, Industrial & Engineering Chemistry Research, Vol. 37, No. 10, pp.4036-4048, 1998.

Garcia-Ayala, Gabriela, Guidelines for WATER Interface, Carnegie Mellon University, Engineering Design Research Center, Pittsburgh, PA 2000.