1. Water for the World

2. Quick Quiz…

3. What percentage of the world’s water can we drink? A. 0.8% B. 6% C. 19% D. 30%

4. A. 0.8% 0.8 % fresh water 1.7 % ice, glaciers 97.5 % sea water Ludovik Hirlimann www.forestwander.com Andrew Hux

5. How many people in the world are without access to drinking water? A. 1.1 million B. 210 million C. 1.1 billion D. 2.3 billion

6. C.1.1 billion

7. On average how many litres of water do we use a day? A. 50 B. 100 C. 150 D. 200

8. C. 150 litres UK Average 150 litres = 10 litres

9. UK Average 150 litres Mozambique 8 litres America 350 litres

10. How many litres could be lost through leaks in this country per day if the supply is 4.5 billion litres? A. 2 million B. 50 million C. 500 million D. 900 million

11. Dwellings (55%) Non dwellings (25%) Lost in transmission (20%) Canary Wharf

12. What percentage of domestic water is used for flushing toilets in the UK? A. 10% B. 20% C. 25% D. 30%

14. Water Consumption Hoekstra, A.Y. and Chapagain, A.K. (2008) Globalization of water: Sharing the planet's freshwater resources, Blackwell Publishing, Oxford, UK

15. Availability of Water World Resources Institute - PAGE, 2000

16. Water Scarcity International Water Management Institute

17. Virtual Water Water used to produce products Water footprint = Domestic + Virtual Water Import Virtual Water Export - Hoekstra, A.Y. and Chapagain, A.K. (2008) Globalization of water: Sharing the planet's freshwater resources, Blackwell Publishing, Oxford, UK

18. Decontamination and Water Service Infrastructure

19. Water Services Infrastructure

20. Water Service Infrastructure

21. Water Treatment Plant Arup

22. Water Treatment Plant Filter River “source” Add chemicalsStir Settle Disinfect Store Distributee

23. Alternative Water Sources Groundwater (Well with Pump) WaterAId

24. Alternative Water Sources Springs Caroline Penn, WaterAId

25. Alternative Water Sources Surface Water – Lakes and Rivers Courtesy of Indrajit Shah

26. Alternative Water Sources Rainwater Harvesting Anokhee Shah,

27. Alternative Water Sources Water Delivery Anokhee Shah,

28. Alternative Water Sources Sea – Thermal Desalination or Reverse Osmosis Arup

29. Treatment – Appropriate Technology Potters for Peace – Ceramic Water Filters Slow sand filtration – Biosand Filter www.biosandfilter.org Potters for Peace

30. Treatment – Appropriate Technology SODIS – Solar Disinfection SODIS / Eawag

31. Conclusions Arup