recycling wort chiller water

A wort chiller allows for a quicker cool down time after the final boil, just prior to pitching the yeast and letting them do their magic. A water hose is connected to one end sending cool water through the copper coils submerged in the hot wort. The water comes out pretty hot after running through the coils but is perfectly fine other than that. Instead of letting this water waste away in the yard or down the driveway I've decided to recycle it in these rain barrels I scored on cragislist. They're recycled olive barrels from Spain and come plumbed with a water tap for only $45. I didn't have everything I needed to use them for my first batch but I'll post later on how they work out.