What impact does pollution have on surface water sources?

Pollution significantly decreases water quality in surface water sources. When pollutants such as chemicals, heavy metals, or organic waste enter water bodies, they can harm aquatic ecosystems and make the water unsafe for human consumption and recreational activities. The presence of toxins, excess nutrients, or pathogens directly influences the overall health of the water body, leading to consequences like algal blooms, reduced oxygen levels, and the death of aquatic life. These changes not only affect the biological integrity of the ecosystem but also reduce the usability of water for drinking, fishing, and swimming. Maintaining good water quality is crucial for the sustainability of both human communities and the environment.