World is fast running out of water. In 30 years, many portions of the world will be severely overpopulated and severely parched (e.g., India, Middle East, parts of North Africa for starters). Many people in the US, Europe and parts of Latin America have plentiful supply, but most others do not. Water has always been a public right, like the right to breath air, and freedom and liberty.
But the villainous and what at that time seemed a far fetched idea of someone taking over the world water resources, as depicted in the latest Bond movie, "Quantum of Solace" is about to play out all over the world. Private parties all over the world are banding to control aquifers and lakes to feed the unquenchable thirst of the world.
We are surrounded by water, nearly 70% of the planet is, and 90% of the human body is...but very little of the water around is potable and drinkable (less than 1%). Ultimately someone is going to figure out a way to cost effectively desalinate the oceans - till then water is going to become the new "clear" gold. There is not way around it. And certain countries will hold other hostage to it, and will to war for it, Pakistan, India, China come to mind.
We cannot live without water, so we do care about it as individuals, already purified water marketed by the like of Coca Cola and others is 5x more expensive than a gallon of gas..but no one pays attention. At least not yet. But as global warming takes grip and our fresh water sources under assault, we will always be fighting a downward battle.