We have developed the system software for health risk assessment of multimedia and multipathways scenarios including Geographical Information System (GIS) and have used it as Decision Support System (DSS) for efficient management of environmental risk in municipal and industrial areas in Korea.We assessed 7 metropolitan cities and 10 industrial areas.For risk evaluation of 120 chemicals including PAHs,VOCs,pesticides,POPs and metals,we used the simulated data by the multimedia fate model and field monitoring data in study areas.