Water, a precious commodity, serves a variety of functions in industries and then ends up as toxic industrial waste water, which is hazardous to the environment. In view of the same, the treatment of industrial waste water has now become imperative for the protection of the environment. It is expected that the emerging waste water treatment technologies should be able to make the industrial discharge safer for the environment, as well as should offer water reusability, in order to contribute in reducing the stress associated with water scarcity. In this direction, advanced oxidation processes (AOPs) offer versatility in waste water purification and generate radical species, such as H2O2, OH•, O2•−, O3, SO4•−, which are responsible for the mineralization of the organic contaminants. Among AOPs, photocatalysis has enormous potential for treating industrial discharge, which is reflected by the numerous investigations reported to date. Photocatalytic treatment of waste water is considered a “zero” waste technology and has been integrated with a variety of techniques to accelerate the degradation of pollutants. The recent advances made in integrated photocatalytic water treatment technologies for the degradation of toxic pollutants have been highlighted in this chapter.