Here's an interesting web page. In SA you have to pay the Govt. for any water pumped from a borehole you paid for, it seems in the US you have to pay for rain water you have collected.
As the piece says soon you will have to pay for the air you breath, Universities and others already own 20% of your genetic code, so you will soon have to pay them for the body you inhabit!
Gorges of Gorges Grouse beat me to this one.http://gorges-smythe.blogspot.com/2011/07/saving-rain-water-is-illegal.html