I dislike Nestle as much as the next guy but I don't get the issue here. The villagers don't consume things that are only produced in their village, like I don't get free coal because I live next to a coal mine.

Coal is stationary. Water isn’t. The private capture of water ends up taking away from others. Sometimes in ways you can’t see, if the water isn’t above ground. With coal it’s just stuck in one place so you aren’t really taking it away from other people or places.