This presentation summarizes information about water pollution presented by MD Faridujaman. It defines water pollution as the contamination of the natural environment with harmful substances, often resulting from human activities. Various types of pollution are described, including microbiological, chemical, and those involving oxygen-depleting substances and nutrients. Causes of water pollution from domestic, industrial and agricultural waste are outlined. The effects on both humans and wildlife are explained. Suggestions for preventing further water pollution are provided, such as being mindful of household chemicals and reducing soil erosion. The presentation concludes by emphasizing the importance of conserving this vital natural resource.