Document Type : Primary Research paper
Department of Earth sciences, Annamalai University, Tamil Nadu, India -608002.
Research Scientist, Water Research Centre, Kuwait Institute for Scientific Research, Safat, Kuwait.
The present investigation is aimed toward understanding the hydro geochemical parameters and development of a water quality index (WQI) to assess groundwater quality of exhausting rock space in Virudhunagar district, Tamil Nadu. A study was applied during this district of the province for 2 seasons (Northeast monsoon and Post-monsoon) to assess the drinking water quality and their seasonal differences through DWQI (Drinking water quality index). A total of 144 groundwater samples for two seasons are collected representing the whole district. The Physicochemical parameters considered for the drinking water quality index (DWQI) include pH, TDS, cations such as Ca2+, Mg2+, Na+ and K+, anions such as Cl−, SO42−, HCO3−,PO42− and NO3−,were also considered for DWQI. The poor water quality is due to the presence of excess amounts of TDS, Na+, HCO3- and Cl− with in the study area. The spatial distribution of DWQI indicates that the Excellent to the good water quality of the drink is determined in patches in completely different regions in the study area. The change in DWQI within the region implies to the season of all monsoon could also be due to the activity of ions, weathering, and action processes.