This document discusses the importance of water preservation and proper waste disposal. It explains that fertilizers and detergents that run into water supplies from farms and households are pollutants that harm human health. All waste materials should be recycled or disposed of properly rather than dumped in water reserves, to avoid contaminating drinking water sources like rivers and lakes. Effective waste disposal methods include compost pits, biogas from waste, and converting sewage into power or fertilizer. Communities must be aware of sanitation and prevent pollution to protect limited water resources.