Define Water pollution.

Water pollution refers to the contamination of water bodies, such as rivers, lakes, oceans, and groundwater, by harmful substances or pollutants. These pollutants can originate from various sources, including industrial activities, agricultural runoff, urbanization, and improper waste disposal. Common water pollutants include chemicals, heavy metals, pathogens, nutrients, and plastics, which can degrade water quality and harm aquatic ecosystems, wildlife, and human health. Water pollution disrupts natural processes, threatens biodiversity, reduces access to clean drinking water, and poses significant environmental and public health risks. Mitigating water pollution requires effective regulation, pollution prevention measures, wastewater treatment, and sustainable resource management practices.