Humans are the primary cause of water pollution, which can have a variety of consequences: Industrial trash: Many businesses continue to fail to handle their waste, dumping massive amounts of toxins from their industrial operations into rivers and the oceans. Many businesses discharge industrial waste into bodies of water before it is treated, such as toxic chemicals. It gradually contaminates the water. The discharge of dangerous material lowers the oxygen levels in the water, causing pollution. Water pollution is defined as the discharge of pollutants into bodies of water that render the water hazardous for human consumption and damage aquatic ecosystems. Water pollution may be caused by a variety of impurities, including hazardous waste, petroleum, and pathogenic microbes. The most efficient strategy to prevent water pollution is likely to be to clean part of the water before reintroducing it into the rivers. This is a very successful approach since wastewater treatment facilities can remove almost all contaminants in wastewater through a chemical, physical, or biological process. The quality of water in streams, lakes, and rivers is determined by the sources that feed them. Unfortunately, when fertilizer, animal and human waste, plastics, and harmful industrial chemicals reach these sources, they pollute the water. It costs the economy by impacting public health, fishing, tourism, and the environment.