1. Introduction -- 2. Drinking water : potential health effects caused by wastewater disposal -- 3. Microbial health risks and water quality -- 4. Chemical health risks -- 5. Risk management in the urban water cycle : climate change risks -- 6. Water source and drinking-water risk management -- 7. Wastewater risks in the urban water cycle -- 8. Risks associated with biosolids reuse in agriculture -- 9. 'Closing the Urban Water Cycle' integrated approach towards water reuse in Windhoek, Namibia -- 10. Reducing risk from wastewater use in urban farming : a case study of Accra, Ghana -- 11. Drinking water : potential health effects caused by infiltration of pollutants from solid waste landfills -- 12. Exploding sewers : the industrial use and abuse of municipal sewers, and reducing the risk : the experience of Louisville, Kentucky US -- 13. Lessons learned : a response and recovery framework for post-disaster scenarios -- 14. Managing urban water risks : managing drought and climate change risks in Australia.