Using of Decision- Making Model FAHP Buckley in Assessment and Zoning of Groundwater Quality for Drinking and Agricultur in Nine Cities of Ilam

One of the most important steps in plain zoning groundwater quality is the quality management of groundwater resources. In this study, the use of geostatistical methods, the chemical properties of groundwater of Ilam city is examined. Water from 78 wells in a 13year period from 2002 to 2014 and the removal of sodium, chlorideelectrically conducting, sulfate, TDS, EC and TH were chemically analysed. The results showed that the quality of groundwater in this area has a strong correlation and spatial structure of the model follows the Gaussian and spherical, then the kriging interpolation was used by GIS software. Finally, using fuzzy logic, classification of Schoeller and Wilcox and metod FAHP Buckley multi-criteria decision-classification map of the study area were collected for drinking and agriculture. Zoning map shows the region's groundwater, according to Schuler, 21% of the area of water quality, medium quality, 36% and 43% of the poor quality of drinking water the according to Wilcox, 15% of the area of water quality, 8% and 77% of the average quality of water for agriculture are the poor quality. So we can say that the quality of drinking water in the study area is intermediate and unfavorable for agriculture.