From 1971 to 1993 the activity was followed by Central Ground Water Board, under the Andhra Pradesh Ground Water Department.
From 1996 to 1997 studies were carried out by the NGRI. The result of this study was a thick radiation of water quality effected by industrial activities, common effluents and agriculture practices.
Within our pilot project we took some sample series and analyses series from surface and ground water. In November 2000 with the NGRI we took 35 samples from the Patancheru and Bolaram area. In January 2001, again with NGRI, we took 27 samples especially from the Bolaram area. Finally, in March 2001 we took 22 samples from the Patancheru area.
