 The World Water Conference gives the opportunity to really cover the whole field and it also makes it possible to see the linkages between different subjects. It's not only about treatment, it's not only about water resources, it's also about specific things, utility management, rehabilitation, aging infrastructure, but also the other way around. Should we go more into decentralized solutions? Where does it fit? How can we take into account new ideas like the development of the Bill Gates Foundation that's reinventing the toilet of the future? How does it fit in? What was the effect? What was the result? Australia is a country where we have a lot of issues in terms of drinking water. The issue is about scarcity of the water, the degradation of the water resources. How can we provide good water close to the big cities, a big challenge in terms of asset and in terms of water quality? For me a good paper is something I don't know.