This Poly aluminium chloride is often used and has a variety of uses in many fields and industries. It has the ability to efficiently remove pollutants and particles from water and wastewater since it is a coagulant and flocculant. The flexibility of Poly aluminium chloride is one of its outstanding qualities. It may be applied to both techniques for treating industrial and potable water. PAC causes suspended particles, organic materials, and colloidal substances to congregate and settle down when it is applied to water.