If you could be any superhero, who would you like to be?

If I could be any superhero, I would be a Watergirl. I would have a superpower to control water, I could dive deep in to the ocean and see there everything without any harm, I could make water move as I want. I would help people to send water, where it's not enough drinking water, I would stop tsunami if it harms people, I would make a rain where it's needed and stop where it's a flood. Also, I would make the most beatiful fountains and warerfalls in the world, I would help gardeners to make gorgeous parks with lakes and pools.
If I were Watergirl, I would clean drinking water from the pollution and also sea and ocean water from all the trash. I also would like to see all the ocean and sea habitans, all places, where there were never human beings.
So, what's your opinion? Is it good to be a super hero? What super hero would you like to be and what would you do?