The discharge of untreated or inadequately treated wastewater containing high levels of pollutants into a river or a lake is an example of wastewater pollution. This can occur when industrial facilities, sewage treatment plants, or other sources release wastewater without proper treatment or regulatory compliance. The wastewater may contain a variety of pollutants, including organic matter, nutrients, heavy metals, pathogens, and chemicals.
When introduced into a water body, these pollutants can disrupt the natural balance, leading to decreased oxygen levels, eutrophication, harmful algal blooms, and the degradation of aquatic habitats. The pollution can harm aquatic organisms, such as fish, amphibians, and aquatic plants, and may also pose risks to human health if the contaminated water is used for drinking, recreation, or irrigation.
