Impact of Dumpsite Leachate Contamination on Surface Water at Beris Lalang Dumpsite, Kelantan

\nLeachate from dumpsites poses a significant threat due to its potential to contaminate surface water, damage local biodiversity, and negatively impact human health. This research focuses on assessing the environmental risks associated with leachate from the Beris Lalang Dumpsite. The aim of the study is to analyze the physical and chemical properties of leachate contamination in nearby surface water. Water samples were collected from four different locations, and the physical and chemical characteristics were evaluated. The Water Quality Index (WQI) and Leachate Pollution Index (LPI) were also calculated. The findings reveal the levels of pollutants were high at surface water samples close to the landfill. According to the WQI assessment, all locations fall under Class III. The LPI assessment indicates that the locations have a low pollution level. Although heavy metals such as zinc, arsenic, and iron were detected, the Heavy Metal Pollution Index (HPI) shows that all locations are considered safe and not highly contaminated. The study highlights the environmental impact of leachate and its potential effects on surface water near the Beris Lalang dumpsite. Additionally, it offers important insights into preventing pollution and safeguarding water resources.\n