Now we have a clean source of water and safe latrines in our homes and schools.

And this creates not only a problem, but great opportunity -- great opportunity for common efforts to find clean energy solutions.

On the tiny blue planet we see from space, the light side of the force is clean, green and renewable.

I urge everyone to look at World Water Day as another occasion to renew their commitment to providing clean, safe water to all who need it.

He kept everything clean in his room.