The study looked at the water quality and sediment of Sampadi River to see how different land uses affect it. They found high levels of nitrogen and phosphorus near oil palm plantations and shrimp farms. The biological oxygen demand exceeded safe levels at all stations, and chemical oxygen demand was also high. Lead, nickel, zinc, and cadmium levels were highest near the jetty, while copper and chromium levels were highest near the village. Cadmium and chromium in sediment were at low levels near the jetty and oil palm plantation. Nickel levels in sediment were high at all stations, and only the station near the oil palm plantation had high nitrogen levels. Phosphate levels in sediment were safe at all stations.