Ground water levels are depleting fast in the State. Latest studies by the ground water department reveal that all districts in the state have witnessed a critical fall in the water table. Dr K. Venugopal, joint director, ground water department told Deccan Chronicle that of all the 23 districts covered by the study from November 2010 to November 2011, the depth of ground water had dropped the most in Prakasam district. Here the ground water level has dropped by 5.32 metres below the earlier levels, followed by a drop of 5.28 metres in Ranga Reddy district.