The main objectives of the research are to identify and analyze the relevant
factors determining the success of wastewater treatment systems, and develop a set of
decision criteria and indicators useful for selecting appropriate treatment systems. To
propose a decision-support model for selecting an appropriate treatment plants in
developing countries, the research collected data from experts, reviewed actual practices
and experiences from wastewater treatment plants, and assessed local needs and
constraints. The research, therefore, comprises of 3 major tasks: the expert survey, the
plant survey, and the community survey. Three tasks are designed to gather empirical
data to establish the waste water treatment alternatives and selection approaches.