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GIS and AHP Based Site Suitability for Sewage Treatment Plant in Sultanpur District, India

Sewage generated from the urban areas is creating an unwanted burden on the environment. This makes it necessary for the urban areas to have the facility of sewage treatment plant. But where? As the STP have with them associated environmental and other risks, high cost of land and other factors making this decision a tricky one. It is at this juncture where technology in the form of GIS and AHP comes in picture to rescue the planners and decision-makers. In the present study it is shown how the GIS and AHP methods can be used to shortlist and rank the various site to be used to house a sewage treatment plant. STP site (S5) was found to be top-ranked among all other sites