Wastewater treatment Water treatment 2 Agriculture-vermicompost-Earthworms 1 Biological treatment systems for water 1 Biomedical waste management 1 Biosorption-Algal biomass 1 Case studies 1 Clean development 1 Drinking water treatment 1 Environmental education 1 Farmers' income 1 Freshwater animals 1 Freshwater plants 1 Gorund water quality- Western ghats 1 Health problems-Kudumbasree-women labours--Tirur municipality 1 Health sanitation 1 Human Health and the Environment 1 Human Wastes and Refuse 1 Hydrobiology 1 Income and Poverty 1 Indoor air pollution 1 Irrigation 1 Lime process 1 Mycorrhization-Edible canna cultivation 1 Phosphogypsum 1 Physico chemical treatment 1 Public health 1 Rainwater quality 1 Sewage irrigation 1 Sludge treatment 1