The United States is the largest consumer market for bottled water in the world, with sales in the billions. Almost everyone drinks it, but do we really know what's in it? The controversial new documentary "Tapped" is trying to blow the lid off this question.

For more information, go to TappedtheMovie.com.

"Tapped" will be in theaters this August, and will have its world premiere at the Maine International Film Festival on July 10, 2009.