The study looked at how pollution in urban areas affects the water quality of the Suyeong River. They found that stormwater runoff from things like construction sites and sewage can harm the river's water quality. By analyzing water samples during rainfall events, they discovered that pollution levels were higher after days without rain. They also calculated the amount of pollutants in the runoff and identified the need for a plan to manage non-point pollution sources in the river. The study emphasized the importance of reducing pollution at its source to protect the river's water quality.