GIS Mapping and Groundwater Quality Assessment Near Solid Waste Dump Site

Groundwater quality has now turned out as an important aspect of groundwater management. Since it is considered the main source of water supply for both urban and rural areas, protecting groundwater from harmful factors is a top priority. Managing groundwater quality, however, requires a variety of methods, including hydrochemical mapping and quality monitoring to understand its variability over time and space as well as its long-term trend, the identification of polluting sources, the delineation of polluted zones, modelling of pollutant transport, and strategies to control pollution. For sanitation, health, and the overall development of civilization, reliable and sustainable water sources are essential. Therefore, a thorough assessment of groundwater quality, its susceptibility to contamination, the source of pollutants, and the routes through which pollutants enter and pollute groundwater is required. The primary goal of the current study is to evaluate the quality of the groundwater near the Uruli Devachi solid waste disposal site in Pune, Maharashtra. In 2014, pre-monsoon and post-monsoon water samples were taken, and basic impurities such as pH, turbidity, sodium, and magnesium were measured. Groundwater contamination from landfill leachate mixing with excess Total suspended solids (TSS), Biochemical oxygen demand (BOD), chloride, chromium, and zinc can be linked to this. The database used to create the maps for the spatial distribution of the key water quality indicators like Total dissolved solids (TDS), alkalinity, total hardness, chloride, sulphate, nitrate, pH, Ca, and Mg was formed from physicochemical assessment of the groundwater samples taken from selected sites in chosen seasons. These maps and findings of the water quality evaluation would aid in understanding the fluctuations in the concentrations of water quality indicators and in developing appropriate control measures to stop leachate from polluting groundwater.