Seeking public service advertising script

One shot: A man washes his hands in a public place, and the water is boiling loudly. ...

Another shot: dry land, dying crops, children holding poor water in a bowl, but reluctant to drink it. ...

Back to the first shot: the man left, but the water was not turned off. ...

Reach out a hand and turn off the tap (the child's face appears behind the scenes: a little don't you think it's his hope ...)