Whining noise coming from engine. on 1995 Chevrolet Caprice

When I accelerate normally a whining noise comes from the engine. I listened in on the engine and it sounds to me its coming from the large pulley on the bottom immediate right of the alternator just above the belt tensioner. Any help will be greatly appreciated!

Asked by for the 1995 Chevrolet Caprice
could either be the power steering pump or alternator, or possible the hydraulic tensioner. I'm having the same problem in a 07 chevy aveo
1 more answer
Well you have probably figured it out by now but 90% chance its the water pump about to give out.