Construction of high rise structure has got a boost in recent years, but on the other hand the issue of scarcity of water in these buildings has been encountered. Provision of On-site waste water treatment plant in a high rise structure at proposed refuge floor, is proving a better solution both Hydraulically and Environmentally. The positioning of these waste water treatment plant and the modeling of this heavy structure is carried out using STAAD Pro. Also the response of the structure after positioning of the treatment plant in the structure, in case of a seismic activity is checked and studied analytically. Time history analysis of the structure with an already available earthquake data is carried out primarily for three building models, and the comparative study to see feasibility of these models.