The water demand is assumed to be 135 lpcd . The water demand depends upon the type of housing or community. For rural areas the water demand will be low while for urban areas the water demand will be high. The population governs the design of septic tank. Assume the population as 40 numbers for a group housing. All the water doesn’t get converted into sewerage. Consider 80% of water demands gets converted into sewerage. Assume the sludge disposal rate […]