Subject(s): Municipal water supply -- Water in Purification -- Sewage in Purification -- Water quality management -- Water as a resource : Availability of water, hydrologic cycle, water demand and pollution, water characteristics and its classification, water quality, municipal water supply system, water quality index -- Municipal wastewater generation, conveyance and disposal : Municipal wastewater disposal system, pollution control measures, biochemical oxygen demand -- Water treatment processes : Basic concepts of treatment, physical treatment process, chemical treatment processes, water hardness and softening, other physical and chemical treatment processes -- Wastewater treatment- physical and chemical processes, advanced physical and chemical processes -- Wastewater treatment- biological methods : Biochemical reactions, treatment systems, nutrient removal. practical aspects of biological treatment processes -- Wastewater reuse : Municipal, industrial, agricultural, recreational reuse, groundwater recharge -- Sludge and septage- treatment and disposal, in developing countries -- Wastewater disposal into natural waterbodies : Effluent disposal standards and by dilution, disposal into water bodies -- Wastewater disposal on land-land application : Wetland treatment, effluent disposal on land, domestic waste disposal, sludge and ash disposal -- Selection, planning and implementation guidelines for water and wastewater treatment systems : Site survey and investigation, configurations and types of treatment processes, treatment plant operation and control