An assessment of ground water quality of post and pre monsoon in Dharapuram taluk, Tiruppur district 2006 – 12: A GIS based approach

People's livelihood always depend on water. The demand for clean water has become an issue of great importance in the recent times. With increase in population and Industrial development the quality of the ground water has been depleted. This paper aims to analyze the quality of ground water in Dharapuram taluk of Tiruppur district, with respect to the selected parameters such as Calcium (Ca), Chloride (Cl), Sodium (Na), Magnesium (Mg), Total Dissolved Solids (TDS) and pH. Based on the secondary data collected, the spatial – Temporal changes from 2006 – 12, for Post and Pre Monsoon seasons, has been examined. By applying the GIS ‘Raster Overlay’ method, the quality of ground water has been analyzed, with reference to the water quality standards, put forth by BIS (Bureau of Indian Standard) 1991 and WHO (World Health Organization) 1994. The results found by the study of ground water quality helps to identify good and moderate zones of the region, before and after the monsoons.