A water supply system is being designed to serve a population of 200,000 people with an average per-capita demand of 600L/Person-day (peak demand factor is 1.8) and a needed fire flow of 28,000 L/min. If the water suply is dran from a river, what should be the design capacity of the supply pumps and the water-treatment plant? For what duration must the fire flow be sustained and what volume of water must be kept in the service reservoir to accomodate a fire? What should be the design capacity of the distribution pipes?