Environmental pollution in industrial clusters is a national issue particularly in a period which is witnessing a rapid industrial growth. The environmental problem in a cluster is a complex multi-dimensional problem which is often difficult to measure and manage. In order to address such complex problem Central Pollution Control Board (CPCB) developed a Comprehensive Environmental Pollution Index (CEPI). In Orissa there are three industrial clusters; Angul-Talcher, Ib-valley and Jharsuguda with CEPI score of more than 70, thus considered as critically polluted.