Risk assessment of groundwater contamination based on Geographic Information System in the southern suburb of Yinchuan, China

Abstract

Groundwater contamination risk assessment is a useful tool for groundwater prevention and control. In this study, groundwater risk assessment model was used to assess the risk to groundwater contamination in the southern suburb of Yinchuan city, north-western China. The high and higher contamination risks of the groundwater are mainly distributed in the southern part of the study area. The proportion of groundwater distribution risk in extremely low and low areas is relatively large, most of which are located on the east and west sides of the water source area. Groundwater depth, net recharge and pollution loading are main factors affecting the contamination risk on the study area. The evaluation results have practical significance for urban planning and construction, groundwater management and protection, and sustainable utilization of water resources.