Seasonal Variation in Physicochemical Characteristics of Water Bodies in and around Cuddalore District, Tamil Nadu

The present investigation has been designed to assess the water quality parameters of surface waters present in and around Cuddalore district, Tamil Nadu for a period of one year. Water samples were collected from five stations (S1-Chidambaram, S2- Veeranam, S3-Vadalur, S4-Vellar and S5-Sipcot) on 15^th day of each month. The parameters analysed include pH, EC, TDS, total hardness, alkalinity, chloride, calcium, magnesium, sodium, sulphate and fluorides. The water samples collected from industrial area showed a high value in all the parameters in summer season. This indicate the extent of pollution due to addition of effluents into the water bodies. But in rainy season all the parameters in all the stations remain under permissible limit. This may be due to the dilution of surface waters with rain water.