The Greater Mohali Area Development Authority has completed about 85 per cent of the work under the Mohali Sector 83 STP project. The project involves construction of a 10 mld STP, 15 mld main pumping station, and 5 mld tertiary treatment plant and the upgradation of the existing 10 mgd at sector 83 to 15 mgd. The estimated cost of the project is Rs 1.45 billion.