Water is essential for human survival and existence. Although everyone acknowledges the importance of water reserves, increasing industrialization and other human activities are drastically reducing the quality of the water. Polymeric composite membranes provide a dependable answer for removing water pollutants and thus improving its quality. In this study, polypropylene composite membranes with Aramid support (PM1 membranes) were fabricated using thermally induced phase separation (TIPS) for water purification and characterized using SEM. Numerous membrane characteristics, including polymer concentration, oil for dissolving polymer, nucleating agent, water immersion time and organic solvent were all adjusted for the production of extremely efficient PM1 membranes.The PM1-WC membrane, which was the best membrane, was fabricated by combining 0.1 g PP with soyabean oil, adipic acid as a nucleating agent, and n-hexane as an organic solvent (PP membranes submerged in water for 40 minutes). In a water filtering system developed in the lab, the PM1 membranes’ desalination capacities were tested. The desalination capacity of the PP membranes showed a salt rejection of between 70% and 75%.