An article I disagree with argues against selling water in British Columbia (where it is abundant) for shipment elsewhere.

I think it make sense to sell water if you have extra water. However, you should stop selling water if you cease to have extra; any treaty that would make it hard to stop obviously must be abrogated.

As for fracking, which should be stopped for other reasons, it is valid to fight it by denying access to the giant quantities of water fracking needs, but that's not a principle, it's a tactic.

We should discourage the retail sale of bottled water, which is very wasteful, but that's not the only way to distribute water from other regions.