Municipal solid waste management became a major challenge due to the population growth, change of lifestyle in Sulaimania city, especially since the urban expansion increased from 2003, and when many villages in the countryside had already became a part of the city. The major part of generating solid waste in Sulaimania disposed in the Tanjaro area (an open dumping area southeast of Sulaimania city) without any treatment or proper landfilling. In this research, the compositions of generating solid waste of Sulaimania city and its properties were determined. Also, in this research, it was found that household waste generation is threatening the environment of Sulaimania city due to the huge amount of the produced leachate of solid waste which flowing into the Tanjaro dumping area and ultimately contaminating groundwater, surface and subsurface soil there. This research covered 12 different subzone areas within 5 major zones across the city a covering nearly 300 house samples. Also collected solid waste samples were categorized into the kitchen, plastic, glass, electronic and some other types of solid wastes. The results showed that the number of houses generating more than 2 kg of solid waste per day is higher than those with less than 1kg generated solid waste. It has also been inferred that the highest composition ratio of household solid waste was kitchen type and reached (63.1%) followed by plastic-type solid waste (10.2%), cardboard (5.4%), cans and other metals (2.8%), Glass waste (2.7%) and E-waste (0.1%), other wastes such as textile, nylon, wood and lethal around (15.7%). Besides that, the results showed that the amount of the waste is seasonally changing, for example, the amount of solid waste from April to October is higher than other months due to increasing human activities for producing solid waste. Furthermore, this study covered a survey of the main medical waste from 25 clinics across Sulaimania city and counted the main waste contributed elements of the medical waste that produced. The variation in the generation rate, varied and excuses for this variation clearly stated. Also, the clinic medical waste generation was also investigated for their constituents and quantity and also the possibility of its segregation and ways to dispose of it. All the clinics private and public ones were investigated and studied for having chimneys and the possibilities of air pollution due to the burning of the medical waste.