^^^I disagree, the water will suck the coldness out of the keg. Garbage can with ice.
-----> from google
Most domestic draft beer is not pasteurized, so it must be kept cold. The temperature of the beer must be maintained between 36-38°F all the way to the point of dispense. Temperatures above 38°F will cause foam and promote sour/cloudy beer. When temperature rises above 50-55°F, bacteria growth rapidly begins to spoil flavor and cloud the beer. Simply put, keg beer storage can be compared to milk storage: "if it is not kept cold, it will spoil."
If dispensing with CO2, and maintained at the proper temperature( 36-38°F)and pressure( between 12-14 Lbs) :
Non-pasteurized draft beer (most domestic keg beers) will remain fresh for about 45-60 days.
Whiskey