Help with Coolant leak issue?
 

Hi, I'm a bit of a newb to DIY repair so please be gentle. My coolant has steadily been decreasing to the point that I'm having to top it off with g12 just about every week.

I looked under the hood and saw a lot of it crusting in one particular area on the drivers side between the engine and coolant reservoir. (see pics below)

Any idea what part I need to replace to solve this leak? Is this the whole water pump issue?

The car is a 2009 A4 Quattro 2.0 with 65k miles

Thanks for any help in advance

You can see a little bit of the pink in the middle there on the first shot to show relative location. The next two pics are close ups.
http://i43.tinypic.com/2cp7t4h.jpg
http://i43.tinypic.com/2nrd8nc.jpg
http://i43.tinypic.com/rlztyd.jpg

Yep that's your water pump.