Investigation of Yasuj Landfill Leachate and its Impact on lawer Water Resource Quality (No.6 Tang¬konareh well)

One of the potential environmental hazards threatening the water resources is the influence of leachate from municipal wastes landfill.Since the Tang-e-¬Konareh drinking water wells are located downstream of landfill waste, the aim of this study was to evaluate the effect of landfill leachate on water quality parameters of Tang-e-¬Konareh well No.6water resource. In the present analytical study, twenty-six quality parameters of water of Tang-e¬-Konaneh well number 6 in tight and wet seasons were selected and analyzed by standard and Hach standard methods. Optional parameters included turbidity, biochemical oxygen demand, chemical oxygen demand, electrical conductivity, total dissolved solids, alkalinity, total hardness, calcium, magnesium, sulfate, phosphate, nitrate, chloride, fluoride, sodium, potassium, total coliform, fecal coliform, Cu, Fe, Mn, Pb, Cd, Cr and Ni, respectively. The results were compared with the standards of the Iran water industry. In all of the samples from Tang-e-¬Konareh well No.6, the measured parameters were less than desirable, except lead-ion concentration and total hardness. Probably due to the fact that the concentration of these two parameters is that the groundwater flows through the bed of limestone formations and minerals leaded. In contrast, in dry seasons, most of the parameters increased due to increase of the concentration of the chemical components. According to the results, threats by water pollution and landfill waste wells downstream in Yasuj resources are predictable in the long term indirectly, therefore, necessary measures should be considered.