In every situation it is important to stay hydrated. When stranded or in amy situation where you do not have ready access to clean drinking water you must find water, somewhere. Without water you will become dehydrated and experience a host of side effects and yes without out it you will eventually die.
After you have found water you must be sure it is clean and fit to drink. There are a host of ways to purify water but perhaps the simplest way is to boil it. Here’s the Tip: You don’t have to boil it for so many minutes; just bring it to a boil and that’s it. Of course you have to have something to collect the water in and have the means and know how to build a fire. Read more about it here.