This presentation discusses rainwater harvesting systems. It introduces rainwater harvesting and explains why it is important for conserving water resources. It describes the key components of a roof-top rainwater harvesting system, including the catchment, transportation pipes, first flush diverter, and filter. It outlines the objectives and methods of rainwater harvesting, and discusses the advantages of conserving water and recharging groundwater, as well as some disadvantages like unpredictable rainfall. The presentation encourages adopting rainwater harvesting to help address increasing water demands.