Walter cooling is one of available coolng solutions mainly for lowering the temp of your cpu which will prolong the life of your cpu. The conventional cooling soultions invovles using Air based coolers with copper heat sinks. Water cooling is relatively new and quite expensive as well. And as of now they are extremely difficult to procure in India. Mumbai might be your best bet.
For more product info go here:
http://www.xoxide.com/watcoolkit.html