A crash course in changing the world.
Well I have to admit that this isn't just a project, but it's an entire organization, which fights for clean water in the wh*** world. Health. Education. Food security, the lives of women, especially depends on clean water. They help countries all over the world. You can donate money to support so many projects. You can't fight just one crisis. So normally I'm not for donations in general, but I like the idea to support more projects.
You can check out this map, to find out where your help is needed:
Or inform yourself. This is a great video about Water Crisis