Volume No. 8 Issue No.: 2 Page No.: 280-290 Oct -Dec 2013




Ali Syed Ahmad and Khan Nazia*

Department of Geology, Aligarh Muslim University, Aligarh (INDIA)


Received on : July 05, 2013




The problems of water quality have become more serious than the quantity, as the environmental problems are getting more serious day by day in different parts of the world. A various number of factors like soil, geology, sewage disposal, effluents and other environmental conditions in which the water tends to stay or move and interact with ground and biological characteristics. This greatly influences the groundwater quality of an area. The Banas river basin occupying an area of about 702.55 km2 , falls in Udaipur and Rajsamand district of Rajasthan, India. The study area falls under the tropical climate. It has high temperature in summer and very cold in winter. The mean annual rainfall is 625 mm. The major sources of water supply in the study area for drinking and industrial uses are surface water bodies (lakes) and groundwater. Currently, groundwater (wells and handpumps) is the major source of irrigation. Assessment of groundwater quality and hydrochemical evolution of groundwater has been studied. Hydrochemical analysis has been carried out based on concentrations of Ca2+, Mg2+, Na+, K+, Cl-, SO4 2-, CO3 2- and HCO3 -. Sodium Adsorption Ratio (SAR), percent sodium (% Na), Permeability Index (PI), pH, Total Dissolved Solids (TDS), Total Hardness (TH) and trilinear diagrams have been studied. SAR value ranges from 5.76 mg/L 30.68 mg/L. Percent sodium value ranges from 64.76 94.26%. Permeability Index ranges from 33.46 99.58%. PH values ranges from 7.71 8.61. The value of hardness ranges from 76 1024 % . Na and PI results indicate that the groundwater in the basin is suitable for irrigation use. Thus, the present study reveals that the groundwater in the basin is of moderate to good quality and is suitable for all uses.


Keywords : Groundwater quality, Hydrochemical facies, Sodium Adsorbtion Ratio (SAR), Total Dissolved Solids (TDS), Permeability Index (PI)