Effect of Industrial Effluents on Surface Water Quality - A Case Study of Patancheru, Andhra Pradesh, India

In order to assess the surface water quality a total of forty two surface water samples were collected in pre-monsoon and post-monsoon seasons of 2008, 2009, 2010 and were analyzed for electrical conductivity, pH, total dissolved solid, Na, K, Ca, Mg, HCO 3 , Cl, and SO 4 . The chemical classification of surface water has been studied using L-L diagram, given by Langelier and Ludwig (1942)1, surface water of both the seasons belongs to sodium Cl+SO4 type. The results show that surface water is affected by industrial effluents which have high concentration of BOD, COD, Na, Ca, Mg, K, Cl, SO4 and HCO3. However the three years of study shows that the surface water pollution in Bolaram and patancheru industrial development areas has significantly reduced, due to fact that the emission of effluents are treated regularly for the last few years.