Seasonal study on the groundwater quality was carried out among the Veppanthattai block of Perambalur district in the year 2013 and the study covers three seasons namely post monsoon, pre monsoon and monsoon. Forty five Groundwater samples were collected from various locations in Veppanthattai block and were analyzed for their physico-chemical characteristics by using the standard analytical procedure of APHA (2005). The sample were analysed for the following parameters namely pH, Total Alkalinity, Electrical Conductivity , Total Dissolved Solids, Total Hardness, Calcium, Magnesium, Chloride, Sulphate, Nitrate, Phosphate, Dissolved Oxygen, Chemical Oxygen Demand and Iron. The result concludes that total alkalinity, total hardness, magnesium and chemical oxygen demand are above the permissible limit in the three seasons therefore it is suggested that the groundwater may be used after pre treatment.