Water pollution is the contamination of bodies of water such as lakes, rivers, oceans, and groundwater. Water pollution can have many different cause.The main reason for water pollution is the daily activities of everyone.The next reason, disasters always happen contaminate the water. Besides, the operation of the plant also pollutes the water. because industrial waste water has not been treated, it pollutes the water. Water pollution brings a lot of bad effects to people. Firstly, it seriously affects human health. Secondly, it affects water sources and aquatic organisms because water is the habitat of fish, crabs, shrimp. To limit water pollution, the most important measure is to raise the sense of responsibility of the community.In addition, we must save water; treatment of waste before being discharged into the environment

The planet keeps nudging us with increasingly extreme droughts, reminding us that water is life. It is an essential resource upon which all living beings depend and it is crucial to all social and economic development, as well as energy production and adaptation to climate change. Nevertheless, we are now facing a gigantic challenge. How do we stop contaminating our rivers, seas, oceans, canals, lakes, and reservoirs?

Main causes of water pollution, It is sometimes caused by nature, such as when mercury filters from the Earth's crust, polluting oceans, rivers, lakes, canals, and reservoirs. However, the most common cause of poor quality water is a human activity and its consequences, which we will now go on to explain:  Global warming, Deforestation, Industry, agriculture, and livestock farming, Rubbish and fecal water dumping, Fuel spillage, and many many.. 

Nowadays, some country in the world has many solutions for this problem, such as reduce CO₂ emissions to prevent global warming and acidification of the oceans, reduce the use of chemical pesticides and nutrients on crops, reduce and safely treat waste water so that, as well as not polluting, it can be reused for irrigation and energy production.