This paper focus on the usage of treated waste water in the production of concrete so that the shortage and cost using potable water can be greatly reduced. In this paper, it t is chosen treated waste water, which give us the exact idea of corrosion and for the construction as well as strength and durability properties of the concrete. To determine the mechanical properties of concrete cast cube specimens using M 20 grade concrete with potable and treated waste water. Water absorption test in order to determine the difference in absorption capacity. The other tests, which are conducted include Rapid Chloride Penetration Test (RCPT), sulphate and chloride test are conducted on potable as well as treated waste water at 7, 14 and 28 days. Concrete cast with treated waste water attained more compressive strength when compared with concrete cast with potable water and the chloride permeability is high for treated waste water concrete compared to potable water concrete.