Water pollution occurs when harmful substances like chemicals, waste, and microorganisms contaminate water bodies such as rivers, lakes, and oceans. This can lead to the destruction of marine ecosystems, harming fish, coral reefs, and other aquatic life. Water pollution also affects human health as it can contaminate drinking water sources, leading to diseases such as cholera and dysentery. Agricultural runoff containing pesticides and fertilizers is a major contributor to water pollution.
