Central Ground Water Authority has been constituted under Section 3 (3) of the Environment (Protection) Act, 1986 to regulate and control development and management of ground water resources in the country. Central Ground Water Board carries out regional hydrogeological studies which provide information on ground water occurrence in different terrains and are essential for future planning of ground water development and management. CGWB renders assistance to various urban, defence and public sector establishments to solve their immediate water supply problems by selecting suitable sites for construction of ground water abstraction structures.