Can chemical assistance significantly reduce the cost of wastewater treatment? This research investigates the use of chemicals to enhance primary treatment in municipal wastewater plants, aiming to reduce the burden on secondary treatment stages. As municipalities seek cost-effective and efficient wastewater management solutions, this study explores promising avenues for optimization. The research involves jar tests using chemicals, polymers, and seawater to determine optimal chemical combinations. Performance parameters, including pH, coagulant type and dosage, mixing intensity, settling time, and the addition of coagulant aids, were all carefully studied. The efficiency was measured by assessing the percentage removals of COD, TSS, turbidity, settleable matter, and heavy metals. The results demonstrate a clear improvement in removal efficiencies with chemically assisted primary treatment. This outcome suggests that strategic chemical interventions can offer a viable approach to lowering the costs associated with municipal wastewater treatment while maintaining or improving environmental standards.