The northern part of Gujarat state may be classified as a semi-arid region. About fifty samples of ground water were collected from different tracts in these regions during premonsoon 2003.post-monsoon 2003 and pre-monsoon 2004 and tested for their EC and PH values. These water samples were further tested for cations and anions. The data obtained were used for classification of water into different categories on the basis of EC (Electrical Conductivity).In general it was found that there was no area having EC within, 250 micro mhos/cm in ground water during year 2003-04. Thus, the water quality has improved during pre-monsoon 2004, as compared to pre-monsoon 2003 due to the recharging of ground water by high rainfall in year 2003.