An early warning system for groundwater pollution based on GIS

the warning theory is introduced in the study of groundwater pollution in this paper. Groundwater pollution early warning is performed by considering comprehensively the current groundwater quality, groundwater quality changing trend and groundwater pollution risk. The relative risk map of groundwater pollution was estimated through a procedure that identifies, cell by cell, the values of three factors, that is inherent vulnerability, load risk of pollution source, and contamination hazard. Early warning model of groundwater pollution combined with ComGIS (component object model geographic information system) technology organically, the regional groundwater pollution early-warning information system was developed, and applied it into Qiqiha'r.