Hydrogeochemical Quality of Groundwater in Vedaraniyam Town, TamilNadu, India

摘要

An attempt has been made in this present work to determine the groundwater quality in parts of Vedaraniyam region, Tamilnadu. Totally, eighty groundwater samples were collected from open and dug wells, covering three seasons (Postmonsoon, summer and premonsoon seasons) and analyzed for physicochemical parameters (pH, EC, TDS, TH, Na, K, Ca, Mg and Cl, SO₄, HCO₃, NO₃) it order to understand the hydro geochemistry of the water. The results of analysis were interpreted with geology and geomorphology of the area and also by various geochemical diagrams such as Piper trilinear plot and USSL classification diagram. Suitability of this water for its utility was verified using Indian standards. The result indicates irrespective of the seasons that only one well is suitable for drinking purpose, with remaining suitable for domestic and irrigation purpose. Further, the results points out that most of the well water falls in Na-Cl type indicating the influence of seawater in these wells which is confirmed by Piper plot. According to USSL classification of water quality of the samples belong to C4 S4, C4 S3 classes water are also found in the area which moderately suitable for irrigation. The influence of sea water on the fresh water aquifer in this coastal region needs special attention in terms of monitoring and for sustainable management.