Solutions will have to be found at all “scales,” meaning that we will need water solutions within individual communities (as in the piped-water project in Senegal), along the length of a river (even as it crosses national boundaries), and globally, for example, to head off the worst effects of global climate change. Lasting solutions will require partnerships between government, business, and civil society, which can be hard to negotiate and manage, since these different sectors of society often have little or no experience in dealing with each other and may mistrust each other considerably.