Abstract: “A shallow groundwater sampling scheme was conducted for a site located nearby the illegal landfill, eastern Thailand. The site was consisted of several soil pits which were subsequently filled by unidentified industrial wastes for an unknown duration. This preliminary investigation includes groundwater samplings and chemical analyses. Groundwater flow direction is mainly from north to south where the illegal landfill is clearly located on the groundwater flow pathways and this could pose a potential threat for groundwater contamination. Seven heavy metals are iron, lead, manganese, copper, zinc, nickel, and cadmium. Most metal are in the Thai Government’s regulated standards except for Mn and Pb for wells located near the landfill. Future work will include more detailed investigation and modeling to predict the extent and advance of contamination.”

Keywords: groundwater, contamination, heavy metals, aquifers, Thailand