Groundwater has several advantages over surface water, such as higher quality and less pollution. Also, if groundwater resources become polluted, it will take a long time for these resources to return to their original condition.
Due to the possibility of leachate leakage in waste landfills into the aquifer and the presence of pollutants such as hydrocarbons, heavy metals and etc., can be considered as a potential threat to groundwater resources. In this study the water location changes in the vicinity of a municipal solid waste landfill located in an industrial area in the southwest of Zanjan was investigated. For this purpose, analysis of physicochemical parameters and heavy metals in groundwater samples up to a radius of 5 km from the landfill was controlled. Relevant information was extracted from this relatively large data set using )PCA( principal component analysis. The results obtained from the principal component analysis show that the Cl parameter is one of the most fundamental parameters in the water quality of the region, which can be caused by leachate leakage. Also, the high impact of major ions such as Ca is related to the geological structure of the region. The parameters of PH, Pb and Mg in more than 50% of wells have values higher than the WHO standard. There is a high correlation between (Na, B, Sr, SO4, Ca, EC, TDS) parameters.
Anahtar Kelimeler: Groundwater, Leachate, Landfill, principal Component Analysis (PCA)