Identification and Prioritization of Vulnerable Areas and Neighborhoods Due to Environmental Hazards of Water and Wastewater (Case Study: Zabol City)

Municipal wastewater in Iran also includes surface water that flows in the corners of the streets, in Iranian cities not every complex and house is equipped with a wastewater treatment system, and even large restaurants and shopping centers have a wastewater treatment system and even a They do not have a simple septic tank, and only medical centers may have sewage treatment systems. Sewage disposal is more evident in areas with urban poverty and will lead to safety and public health risks, and the existing sewerage network does not meet the current needs of the city due to wear and tear. Due to the soil texture of Zabol and the lack of water penetration, the drainage level in this city is high so that in areas with digging half to one meter to reach the water. In such conditions, due to soil saturation, there is no water absorption and any sewage and effluent produced is considered as runoff and creates acute environmental and health problems, which has caused many problems for people. Due to the importance of this issue, vulnerable areas and neighborhoods caused by environmental hazards of water and sewage in Zabol city have been identified and prioritized. This research is applied in terms of purpose and based on the nature of descriptive-analytical study. The data required for this research were divided into two categories of data: a) spatial (spatial) and b) non-spatial (descriptive) data. Collecting information and data in the form of documents and libraries and using the studies of consulting engineers and related organizations, as well as extracting data from GIS maps of the city. For data analysis, Arc GIS software and combination with (models, AHP, SAW ANP and fuzzy environment) were used. At a distance from the city, the current refinery is located near the city and unsuitable. Geologically, except for a small area of the city, the whole city is in a bad condition, and in terms of the importance of the soil of the current treatment plant, it is somewhat quite suitable and unsuitable. The vegetation parameter is used to preserve the value of lands and prevent the destruction of forest areas and pastures, and the basis for classifying this parameter is to select the desired location for the treatment plant with the least adverse effect on vegetation