Water. H20. Much of Wisconsin was under glaciers, and the in the Wisconsin River Valley where I live, it's pretty much all sand and sand stone for hundreds and hundreds of miles around. Drive a sand point down 24' and you've got some of the cleanest, sweetest tasty water in the world, bar none, and thank God I've got my own well. Best water I've ever tasted, even compared to out of a bottle. I'd much rather be sitting on top of my own well of incredible water than depending on some pumping station in a city to get it to me, and trust it won't kill me if I drink it.
Pffft... that's nothing. I'll have you know that my drinking water is supplied by Japanese whale hunters who, after bagging a Beluga, harpoon an iceberg and drag it back to Tokyo. Where it's melted down, bottled and flown to Heathrow for the exclusive consumption of your truly.
I'd like to know how many of you lot drink water that last flowed freely during the last ice age.
Peasants.