Groundwater Pollution Risk Assessment Using the DRASTIC Model at San Menxia Basin, Henan Province

Groundwater pollution risk assessment to delineate areas that are more susceptible to contamination from anthropogenic sources has become an important element for sensible resource management and land use planning. This contribution aims at estimating groundwater pollution risk assessment by applying the DRASTIC model as well as utilizing sensitivity analyses to evaluate the relative importance of the model parameters in San Menxia Basin, Henan Province. The DRASTIC model uses seven environmental parameters (Depth to water, net Recharge, Aquifer media, Soil media, Topography, Impact of vadose zone, and hydraulic Conductivity) to characterize the hydro- geological setting and evaluate groundwater pollution risk assessment.. The part of the labour and agriculture developed area and near by reservoir was dominated by "High" pollution risk classes while the second and third terra part was characterized by "Moderate" pollution risk classes. The elevated the loess part of the study area displayed "Low" pollution risk.The ultimate goal of the study was to define the specifications of an inexpensive easy-to-use computer-based system that would assist state regulatory and planning personal in evaluating groundwater pollution problems.