Waste water management Water pollution 2 Air pollution and its management through biotechnology 1 Bhiwa model 1 Biological waste 1 Bioremediation 1 Canal seepage- Ground water regime 1 Environmental biotechnology 1 Ground water shortage 1 Heavy metal content- Periyar river 1 Household drinking water sources 1 Hydrogeology- Kerala 1 Irrigation management 1 Kerala water policy 1 Landfill leachate- Vadavathoor 1 Pollution control 1 Remote sensing-GIS-water resource development 1 River basins- Management 1 Sacred groves-kannur-floral diversity 1 Social problems and services 1 Solid waste management 1 Tanneries, waste water management 1 Traditional water resource 1 Valapattanam river basin 1 Vembanad lake- Kumarakom region 1 Waste water treatment 1 Water health 1 Water literacy 1 Water pricing- Kerala 1 Water quality- Drinking water 1